示例#1
0
def standardinit(config, base, pos, final, R=8):

    ##
    print('Initial condition from standard reconstruction')
    bs, nc = config['boxsize'], config['nc']

    if abs(base.mean()) > 1e-6:
        base = (base - base.mean()) / base.mean()
    pfin = tools.power(final, boxsize=bs)[1]
    ph = tools.power(1 + base, boxsize=bs)[1]
    bias = ((ph[1:5] / pfin[1:5])**0.5).mean()
    print('Bias = ', bias)

    g = standardrecon(config, base, pos, bias, R=R)

    with tf.Session(graph=g) as sess:
        sess.run(tf.global_variables_initializer())
        tfdisplaced = g.get_tensor_by_name('displaced:0')
        tfrandom = g.get_tensor_by_name('random:0')

        displaced, random = sess.run([tfdisplaced, tfrandom])

    displaced /= displaced.mean()
    displaced -= 1
    random /= random.mean()
    random -= 1
    recon = displaced - random
    return recon
示例#2
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def savehalofig(truemesh, reconmesh, fname, hgraph, boxsize, title=''):
    '''Given a graph, list of 3 fields in truemesh & recon-init
    create the diagnostic figure,  3X3
    '''
    truelin, truefin, truedata = truemesh

    with tf.Session(graph=hgraph) as sessionh:
        sessionh.run(tf.global_variables_initializer())
        gh = sessionh.graph
        linmesh_t = gh.get_tensor_by_name('linmesh:0')
        datamesh_t = gh.get_tensor_by_name('datamesh:0')
        linear_t = gh.get_tensor_by_name('linear:0')
        final_t = gh.get_tensor_by_name('final:0')
        samples_t = gh.get_tensor_by_name('samples:0')

        linear, final, data = sessionh.run(
            [linear_t, final_t, samples_t], {
                linmesh_t: reconmesh,
                datamesh_t: np.expand_dims(truedata, -1) * 0
            })

    fig, ax = plt.subplots(3, 3, figsize=(12, 12))
    meshes = [[truelin, linear], [truefin, final], [truedata, data]]
    labels = ['Linear', 'Final', 'Data']
    for i in range(3):
        m1, m2 = meshes[i][0], meshes[i][1]
        if m1.mean() < 1e-6:
            m1, m2 = m1 + 1, m2 + 1
        k, pt = tools.power(m1, boxsize=boxsize)
        k, pr = tools.power(m2, boxsize=boxsize)
        k, px = tools.power(m1, m2, boxsize=boxsize)
        ax[0, 0].semilogx(k, px / (pr * pt)**.5, 'C%d' % i, label=labels[i])
        ax[0, 1].semilogx(k, pr / pt, 'C%d' % i)
        ax[0, 2].loglog(k, pt, 'C%d' % i)
        ax[0, 2].loglog(k, pr, 'C%d--' % i)
        ax[1, i].imshow(m2.sum(axis=0))
        ax[2, i].imshow(m1.sum(axis=0))
    ax[2, 0].set_ylabel('Truth')
    ax[1, 0].set_ylabel('Recon')
    ax[0, 0].set_title('Cross Correlation')
    ax[0, 0].set_ylim(-0.1, 1.1)
    ax[0, 1].set_title('Transfer Function')
    ax[0, 1].set_ylim(-0.1, 2)
    ax[0, 2].set_title('Powers')
    ax[0, 2].set_ylim(1, 1e5)
    ax[0, 0].legend()
    for axis in ax.flatten():
        axis.grid(which='both', lw=0.5, color='gray')
    fig.suptitle(title)
    fig.tight_layout(rect=[0, 0, 1, 0.95])
    fig.savefig(fname)
示例#3
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def savefig(truemesh, reconmesh, fname):
    fig, ax = plt.subplots(2, 3, figsize=(12, 8))
    k, pt = tools.power(1 + truemesh, boxsize=bs)
    k, pr = tools.power(1 + reconmesh, boxsize=bs)
    k, px = tools.power(1 + truemesh, 1 + reconmesh, boxsize=bs)
    ax[0, 0].semilogx(k, px / (pr * pt)**.5, 'C0')
    ax[1, 0].semilogx(k, pr / pt, 'C0')
    ax[0, 1].loglog(k, pt)
    ax[1, 1].loglog(k, pr)
    ax[0, 2].imshow(truemesh.sum(axis=0))
    ax[1, 2].imshow(reconmesh.sum(axis=0))
    for axis in ax.flatten():
        axis.grid(which='both', lw=0.5, color='gray')
    fig.tight_layout()
    fig.savefig(fname)
示例#4
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    def setupbias(self, traindata, nsims = 10, cutoff=1.5):

        args = self.args
        bs, nc = args.bs, args.nc
        b1, b2, perr = [], [], []
        for i in range(nsims):
            idx = np.random.randint(0, traindata.shape[0], 1)
            xx = traindata[idx, 0].astype(np.float32)
            yy = traindata[idx, 1].astype(np.float32)
            _, fpos = self.pmpos(tf.constant(xx))
            fpos = fpos[0].numpy() *bs/nc
            bparams, bmodel = getbias(bs, nc, yy[0]+1, xx[0], fpos)
            bmodeltf = self.biasfield(xx, tf.constant([bparams[0], bparams[1]], dtype=tf.float32)).numpy()
            errormesh = yy - bmodeltf# np.expand_dims(bmodel, 0)
            kerror, perror = tools.power(errormesh[0]+1, boxsize=bs)
            kerror, perror = kerror[1:], perror[1:]
            perr += [perror]
            b1 += [bparams[0]]
            b2 += [bparams[1]]
        print("b1 : %0.3f $\pm$ %0.2f"%(np.array(b1).mean(), np.array(b1).std()))
        print("b2 : : %0.3f $\pm$ %0.2f"%(np.array(b2).mean(), np.array(b2).std()))
        b1, b2 = np.array(b1).mean(), np.array(b2).mean()

        perr = np.array(perr).mean(axis=0)
        kny = nc*np.pi/bs
        cutoff = 1.5
        perr[np.where(kerror > cutoff*kny)] = perr[np.where(kerror > cutoff*kny)[0][0]]
        ipkerror = interp1d(kerror, perr, bounds_error=False, fill_value=(perr[0], perr.max()))
        errormesh = tf.expand_dims(tf.constant(ipkerror(args.kmesh), dtype=tf.float32), 0)
        #ipkerror = lambda x: 10**np.interp(np.log10(x), np.log10(kerror), np.log10(perr))
        #errormesh = tf.constant(ipkerror(args.kmesh), dtype=tf.float32)
        bias = tf.constant([b1, b2], dtype=tf.float32)
        return bias, errormesh
def setupbias(nsims = 10, cutoff=1.5):

    b1, b2, perr = [], [], []
    for i in range(nsims):
        idx = np.random.randint(0, traindata.shape[0], 1)
        xx = traindata[idx, 0].astype(np.float32)
        yy = traindata[idx, 1].astype(np.float32)
        _, fpos = pmpos(tf.constant(xx))
        fpos = fpos[0].numpy() *bs/nc
        bparams, bmodel = getbias(bs, nc, yy[0]+1, xx[0], fpos)
        errormesh = yy - np.expand_dims(bmodel, 0)
        kerror, perror = tools.power(errormesh[0]+1, boxsize=bs)
        kerror, perror = kerror[1:], perror[1:]
        perr += [perror]
        b1 += [bparams[0]]
        b2 += [bparams[1]]
    print("b1 : %0.3f $\pm$ %0.2f"%(np.array(b1).mean(), np.array(b1).std()))
    print("b2 : : %0.3f $\pm$ %0.2f"%(np.array(b2).mean(), np.array(b2).std()))
    b1, b2 = np.array(b1).mean(), np.array(b2).mean()

    perr = np.array(perr).mean(axis=0)
    kny = nc*np.pi/bs
    perr[np.where(kerror > cutoff*kny)] = perr[np.where(kerror > cutoff*kny)[0][0]]
    
    ipkerror = lambda x: 10**np.interp(np.log10(x), np.log10(kerror), np.log10(perr))
    errormesh = tf.constant(ipkerror(kmesh), dtype=tf.float32)
    return b1, b2, errormesh
示例#6
0
def get_diff_spectra(args, ipklin,  nsims=10, nsteps=3):

    bs, nc = args.bs, args.nc
    nsims = args.nsims
    numd = args.numd
    try: R=args.Rstd
    except: R=128
    ncf=args.ncf
    
    path = '//mnt/ceph/users/cmodi/cosmo4d/z00/'
    dpath = path + '/L%04d_N%04d_D%04d//'%(bs, nc, numd*1e4)
    alldata = np.array([np.load(dpath + 'S%04d.npy'%i) for i in range(100, 100+nsims)]).astype(np.float32)
    initdata = np.array([np.load(dpath + 'stdR%d_S%04d.npy'%(R,i)) for i in range(100, 100+nsims)]).astype(np.float32)

    try:
        dyn = "%02dstep"%nsteps
        path = '//mnt/ceph/users/cmodi/cosmo4d/z00/'
        path = path + '/L%04d_N%04d_%s//'%(bs, nc, dyn)
        final = np.array([tools.readbigfile(path + '/L%04d_N%04d_S%04d_%02dstep/mesh/d/'%(bs, nc, seed, nsteps)) for seed in range(100, 100+nsims)]).astype(np.float32)
    except:
        dyn = "%02dstep_B1"%nsteps
        path = '//mnt/ceph/users/cmodi/cosmo4d/z00/'
        path = path + '/L%04d_N%04d_%s//'%(bs, nc, dyn)
        final = np.array([tools.readbigfile(path + '/L%04d_N%04d_S%04d_%02dstep/mesh/d/'%(bs, nc, seed, nsteps)) for seed in range(100, 100+nsims)]).astype(np.float32)
        
    print('alldata shape :', alldata.shape)
    pdiffs, bb = [], []
    for j in range(nsims):
        k, pfin = tools.power(final[j], boxsize=bs)
        ph = tools.power(1+alldata[j, 1], boxsize=bs)[1]
        bias = ((ph[1:5]/pfin[1:5])**0.5).mean()
        bb.append(bias)
        recon = initdata[j] / bias
        precon =tools.power(1+recon, boxsize=bs)[1]
        pdiff = ipklin(k) - precon
        pdiffs.append(pdiff)

    pdiff = np.array(pdiffs).mean(axis=0)
    bias = np.array(bb).mean(axis=0)
    xx, yy = k[pdiff > 0], pdiff[pdiff > 0]
    ipkdiff = lambda x: 10**np.interp(np.log10(x), np.log10(xx), np.log10(yy))

    return ipkdiff, bias
示例#7
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def fib(n):
    """finds nth fibonacci number in logarithmic time"""

    goldenRatio = (1 + 5 ** 0.5) / 2
    sequence = 0, 1, 1
    try:
        return sequence[n]
    except IndexError:
        binetApprox = power(goldenRatio, n) / (5 ** 0.5)
        if n % 2 == 0:
            return int(binetApprox)
        return int(1 + binetApprox)
示例#8
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def save2ptfig(i, iterand, truth, fpath, bs, fsize=12, save=True, retfig=False):

    ic, fin = truth
    ic1, fin1 = iterand

    pks = []
    if abs(ic1[0].mean()) < 1e-3: ic1[0] += 1
    #if abs(ic[0].mean()) < 1e-3: ic[0] += 1
    k, p1 = tools.power(ic1[0]+1, boxsize=bs)
    k, p2 = tools.power(ic[0]+1, boxsize=bs)
    k, p12 = tools.power(ic1[0]+1, f2=ic[0]+1, boxsize=bs)
    pks.append([p1, p2, p12])
    if fin1[0].mean() < 1e-3: fin1[0] += 1
    if fin[0].mean() < 1e-3: fin[0] += 1
    k, p1 = tools.power(fin1[0], boxsize=bs)
    k, p2 = tools.power(fin[0], boxsize=bs)
    k, p12 = tools.power(fin1[0], f2=fin[0], boxsize=bs)
    pks.append([p1, p2, p12])
    

    fig, ax = plt.subplots(1, 3, figsize=(12,3.5))
    ax[0].plot(k, pks[0][0], 'C0', lw=2, label='Recon')
    ax[0].plot(k, pks[0][1], 'C0--', lw=2, label='Truth')
    ax[0].plot(k, pks[1][0], 'C1', lw=2)
    ax[0].plot(k, pks[1][1], 'C1--', lw=2)
    ax[0].loglog()
    ax[0].set_ylabel('P(k)')
    
    p1, p2, p12 = pks[0]
    ax[1].plot(k, p12/(p1*p2)**0.5, 'C0', lw=2, label='Init')
    ax[2].plot(k, (p1/p2)**0.5, 'C0', lw=2, label='')
    
    p1, p2, p12 = pks[1]
    ax[1].plot(k, p12/(p1*p2)**0.5, 'C1', lw=2, label='Final')
    ax[2].plot(k, (p1/p2)**0.5, 'C1', lw=2, label='')
               
    ax[1].semilogx()
    ax[2].semilogx()
    ax[1].set_ylim(-0.1, 1.1)
    ax[2].set_ylim(-0.1, 2.)
    ax[1].set_ylabel('Cross correlation', fontsize=fsize)
    ax[2].set_ylabel('Transfer Function', fontsize=fsize)
    
    for axis in ax:
        axis.legend(fontsize=fsize)
        axis.grid(which='both')
        axis.set_xlabel('k (h/Mpc)', fontsize=fsize)

    plt.tight_layout()
    if save: 
        plt.savefig(fpath + '/recon2pt%s.png'%str(i))
        plt.close()
    if retfig: return fig, ax
def get_ps(iterand, truth):
    ic, fin = truth
    ic1, fin1 = iterand

    pks = []
    if abs(ic1[0].mean()) < 1e-3: ic1[0] += 1
    #if abs(ic[0].mean()) < 1e-3: ic[0] += 1                                                                                                                  
    k, p1 = tools.power(ic1[0]+1, boxsize=bs)
    k, p2 = tools.power(ic[0]+1, boxsize=bs)
    k, p12 = tools.power(ic1[0]+1, f2=ic[0]+1, boxsize=bs)
    pks.append([p1, p2, p12])
    if fin1[0].mean() < 1e-3: fin1[0] += 1
    if fin[0].mean() < 1e-3: fin[0] += 1
    k, p1 = tools.power(fin1[0], boxsize=bs)
    k, p2 = tools.power(fin[0], boxsize=bs)
    k, p12 = tools.power(fin1[0], f2=fin[0], boxsize=bs)
    pks.append([p1, p2, p12])

    return k, pks
示例#10
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import tools
import matplotlib.pyplot as plt

bs, nc = 400, 128
seed = 100
numd = 1e-3
ofolder = './saved/L%04d_N%04d_S%04d_n%02d/anneal4/nc0norm-truth/' % (
    bs, nc, seed, numd * 1e4)
figfolder = ofolder + 'figs/'
try:
    os.makedirs(figfolder)
except:
    pass

truemesh = np.load(ofolder + 'truth.f4.npy')
k, pt = tools.power(1 + truemesh, boxsize=bs)

fig, ax = plt.subplots(1, 2, figsize=(9, 4), sharex=True)

#iters = [0, 100, 200, 300, 500]
iters = [1000, 600, 700, 800, 900]
subf = 'R20'
reconfile = '/%s/iter1000.f4.npy' % subf
nit = 1000

for j, it in enumerate(iters):
    reconmesh = np.load(ofolder + '/%s/iter%d.f4.npy' % (subf, it))
    k, pr = tools.power(1 + reconmesh, boxsize=bs)
    k, px = tools.power(1 + truemesh, 1 + reconmesh, boxsize=bs)
    ax[0].plot(k, px / (pr * pt)**.5, 'C%d' % j, label=it)
    ax[1].plot(k, pr / pt, 'C%d' % j)
示例#11
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    mesh['predict'] = dtools.uncubify(recp[:,:,:,:,0], shape)
    
    meshes[seed] = [mesh, hmesh]
    print('All the predictions have been generated for seed = %d'%seed)

##############################
##Power spectrum

kk = tools.fftk(shape, bs)
kmesh = sum(i**2 for i in kk)**0.5


fig, ax = plt.subplots(1, 2, figsize = (10, 4))
for seed in seeds:
    predict, hpmeshd = meshes[seed][0]['predict'], meshes[seed][1]['target'], 
    k, pkpred = tools.power(predict/predict.mean(), boxsize=bs, k=kmesh)
    k, pkhd = tools.power(hpmeshd/hpmeshd.mean(), boxsize=bs, k=kmesh)
    k, pkhx = tools.power(hpmeshd/hpmeshd.mean(), predict/predict.mean(), boxsize=bs, k=kmesh)
    #k, pkpredall = tools.power(predictall/predictall.mean(), boxsize=bs, k=kmesh)
    #k, pkhallx = tools.power(hpmeshd/hpmeshd.mean(), predictall/predictall.mean(), boxsize=bs, k=kmesh)  
    ##
    ax[0].semilogx(k, pkpred/pkhd, label=seed)
    ax[1].semilogx(k, pkhx/(pkpred*pkhd)**0.5)
    # plt.plot(k, pkpredall/pkhd)
    
ax[0].legend(fontsize=14)
ax[0].set_title('Trasnfer function', fontsize=14)
ax[1].set_title('Cross correlation', fontsize=14)
for axis in ax: axis.set_ylim(0., 1.1)
for axis in ax: axis.set_yticks(np.arange(0, 1.1, 0.1))
for axis in ax: axis.grid(which='both')
示例#12
0
def all_sim():

    path = '//mnt/ceph/users/cmodi/cosmo4d/z00/'
    dyn = "%02dstep_B1"%nsteps
    dynf = "%02dstep_B1"%nstepsf
    hpath = path + '/L%04d_N%04d_%s//'%(bs, ncf, dynf)
    path = path + '/L%04d_N%04d_%s//'%(bs, nc, dyn)


    for seed in range(100, 601):
        print(seed)
        ic = tools.readbigfile(path + '/L%04d_N%04d_S%04d_%02dstep/mesh/s/'%(bs, nc, seed, nsteps))
        final = tools.readbigfile(path + '/L%04d_N%04d_S%04d_%02dstep/mesh/d/'%(bs, nc, seed, nsteps))
        hpos = tools.readbigfile(hpath + '/L%04d_N%04d_S%04d_%02dstep/FOF/PeakPosition/'%(bs, ncf, seed, nstepsf))[:num]
        hmassall = tools.readbigfile(hpath + '/L%04d_N%04d_S%04d_%02dstep/FOF/Mass/'%(bs, ncf, seed, nstepsf)).flatten()
        hmass = hmassall[:num]
        hmeshpos = tools.paintcic(hpos, bs, nc)
        hmeshmass = tools.paintcic(hpos, bs, nc, hmass.flatten()*1e10)
        hmeshmass /= hmeshmass.mean()
        hmeshmass -= 1
        hmeshpos /= hmeshpos.mean()
        hmeshpos -= 1
        
        if posdata: 
            data = tf.constant(hmeshpos.reshape(1, nc, nc, nc), dtype=tf.float32)
        else: data = tf.constant(hmeshmass.reshape(1, nc, nc, nc), dtype=tf.float32)
    
        base = hmeshpos
        pfin = tools.power(final, boxsize=bs)[1]
        ph = tools.power(1+base, boxsize=bs)[1]
        bias = ((ph[1:5]/pfin[1:5])**0.5).mean()
        
        tfdisplaced, tfrandom = standardrecon(data, tf.expand_dims(tf.constant(hpos, dtype=tf.float32), 0),
                                              tf.constant(bias, dtype=tf.float32), R=tf.constant(R, dtype=tf.float32))
        
        displaced, random = tfdisplaced.numpy()[0], tfrandom.numpy()[0]
        
        displaced /= displaced.mean()
        displaced -= 1
        random /= random.mean()
        random -= 1
        recon = np.squeeze(displaced - random)
        savepath =  '//mnt/ceph/users/cmodi/cosmo4d/z00/L%04d_N%04d_D%04d//'%(bs, nc, numd*1e4)
        np.save(savepath + 'stdR%d_S%04d'%(R, seed), recon)


        if seed == 100:
            import matplotlib.pyplot as plt
            plt.figure(figsize = (9, 4))
            plt.subplot(131)
            plt.imshow(ic.sum(axis=0))
            plt.subplot(132)
            plt.imshow(data.numpy()[0].sum(axis=0))
            plt.subplot(133)
            plt.imshow(recon.sum(axis=0))
            plt.savefig('tmp.png')
            plt.close()

            print(ic.mean(),  recon.mean())
            k, p1 = tools.power(ic+1, boxsize=bs)
            p2 = tools.power(recon+1, boxsize=bs)[1]
            px = tools.power(ic+1, f2=recon+1, boxsize=bs)[1]
            plt.plot(k, p2/p1)
            plt.plot(k, px/(p1*p2)**0.5, '--')
            plt.semilogx()
            plt.savefig('tmp2.png')
            plt.close()
示例#13
0
def check_module(modpath):
    print('Test module')
    tf.reset_default_graph()
    module = hub.Module(modpath + '/likelihood/')
    xx = tf.placeholder(tf.float32,
                        shape=[None, None, None, None, nchannels],
                        name='input')
    yy = tf.placeholder(tf.float32,
                        shape=[None, None, None, None, ntargets],
                        name='labels')
    samples = module(dict(features=xx, labels=yy), as_dict=True)['sample']
    loglik = module(dict(features=xx, labels=yy),
                    as_dict=True)['loglikelihood']

    preds = {}
    with tf.Session() as sess:
        sess.run(tf.initializers.global_variables())

        for seed in seeds:
            xxm = np.pad(meshes[seed][0]['cic'], pad, 'wrap')
            #yym = np.stack([np.pad(meshes[seed][1]['pnncen'], pad, 'wrap'), np.pad(meshes[seed][1]['pnnsat'], pad, 'wrap')], axis=-1)
            yym = np.stack([meshes[seed][1][i] for i in tgname], axis=-1)
            print(xxm.shape, yym.shape)
            preds[seed] = sess.run(samples,
                                   feed_dict={
                                       xx:
                                       np.expand_dims(np.expand_dims(xxm, -1),
                                                      0),
                                       yy:
                                       np.expand_dims(yym, 0)
                                   })
            meshes[seed][0]['predict'] = preds[seed][:, :, :, :].sum(axis=-1)
            meshes[seed][0]['predictcen'] = preds[seed][:, :, :, 0]
            meshes[seed][0]['predictsat'] = preds[seed][:, :, :, 1]

    ##############################
    ##Power spectrum
    shape = [nc, nc, nc]
    kk = tools.fftk(shape, bs)
    kmesh = sum(i**2 for i in kk)**0.5

    fig, ax = plt.subplots(2, 3, figsize=(12, 8))
    for seed in seeds:
        for i, key in enumerate(['cen', 'sat']):
            predict, hpmeshd = meshes[seed][0]['predict%s' %
                                               key], meshes[seed][1]['pnn%s' %
                                                                     key],
            k, pkpred = tools.power(predict / predict.mean(),
                                    boxsize=bs,
                                    k=kmesh)
            k, pkhd = tools.power(hpmeshd / hpmeshd.mean(),
                                  boxsize=bs,
                                  k=kmesh)
            k, pkhx = tools.power(hpmeshd / hpmeshd.mean(),
                                  predict / predict.mean(),
                                  boxsize=bs,
                                  k=kmesh)
            ##
            ax[0, i].semilogx(k[1:], pkpred[1:] / pkhd[1:], label=seed)
            ax[1, i].semilogx(k[1:], pkhx[1:] / (pkpred[1:] * pkhd[1:])**0.5)
            ax[0, i].set_title(key, fontsize=12)

        i = 2
        predict, hpmeshd = meshes[seed][0]['predictcen']+meshes[seed][0]['predictsat'] ,\
            meshes[seed][1]['pnncen']+meshes[seed][1]['pnnsat']
        k, pkpred = tools.power(predict / predict.mean(), boxsize=bs, k=kmesh)
        k, pkhd = tools.power(hpmeshd / hpmeshd.mean(), boxsize=bs, k=kmesh)
        k, pkhx = tools.power(hpmeshd / hpmeshd.mean(),
                              predict / predict.mean(),
                              boxsize=bs,
                              k=kmesh)
        ##
        ax[0, i].semilogx(k[1:], pkpred[1:] / pkhd[1:], label=seed, ls='-')
        ax[1, i].semilogx(k[1:],
                          pkhx[1:] / (pkpred[1:] * pkhd[1:])**0.5,
                          ls='-')

    for axis in ax.flatten():
        axis.legend(fontsize=14)
        axis.set_yticks(np.arange(0, 1.1, 0.1))
        axis.grid(which='both')
        axis.set_ylim(0., 1.1)
    ax[0, i].set_title('All Gal', fontsize=15)
    ax[0, 0].set_ylabel('Transfer function', fontsize=14)
    ax[1, 0].set_ylabel('Cross correlation', fontsize=14)
    plt.savefig(savepath + '/2pt%d.png' % max_steps)
    plt.show()

    # ##################################################
    fig, ax = plt.subplots(2, 3, figsize=(12, 8))

    for i, key in enumerate(['cen', 'sat']):
        predict, hpmeshd = meshes[seed][0]['predict%s' %
                                           key], meshes[seed][1]['pnn%s' %
                                                                 key],
        vmin, vmax = 0, (hpmeshd[:, :, :].sum(axis=0)).max()
        im = ax[0, i].imshow(predict[:, :, :].sum(axis=0),
                             vmin=vmin,
                             vmax=vmax)
        im = ax[1, i].imshow(hpmeshd[:, :, :].sum(axis=0),
                             vmin=vmin,
                             vmax=vmax)
        ax[0, i].set_title(key, fontsize=15)
    i = 2
    predict, hpmeshd = meshes[seed][0]['predictcen']+meshes[seed][0]['predictsat'] ,\
            meshes[seed][1]['pnncen']+meshes[seed][1]['pnnsat']
    im = ax[0, i].imshow(predict[:, :, :].sum(axis=0), vmin=vmin, vmax=vmax)
    im = ax[1, i].imshow(hpmeshd[:, :, :].sum(axis=0), vmin=vmin, vmax=vmax)
    ax[0, i].set_title('All Gal', fontsize=15)
    ax[0, 0].set_ylabel('Prediction', fontsize=15)
    ax[1, 0].set_ylabel('Truth', fontsize=15)
    plt.savefig(savepath + '/imshow%d.png' % max_steps)
    plt.show()
示例#14
0
def sampletrue(modpath, csize):
    print('sampling true')
    tf.reset_default_graph()
    module = hub.Module(modpath + '/likelihood/')
    xx = tf.placeholder(tf.float32,
                        shape=[None, None, None, None, nchannels],
                        name='input')
    yy = tf.placeholder(tf.float32,
                        shape=[None, None, None, None, ntargets],
                        name='labels')
    samples = module(dict(features=xx, labels=yy), as_dict=True)['sample']
    loglik = module(dict(features=xx, labels=yy),
                    as_dict=True)['loglikelihood']

    index = np.where(cube_sizes == csize)[0][0]

    with tf.Session() as sess:
        sess.run(tf.initializers.global_variables())
        start = time()

        #sess.run(tf.initializers.global_variables())
        features = cube_features[index][0:1].astype('float32')
        targets = cube_target[index][0:1].astype('float32')
        xxm = features
        yym = targets
        print(xxm.shape, yym.shape)
        sample = np.zeros_like(yym)
        sample2 = sess.run(samples, feed_dict={xx: xxm, yy: yym * 0})
        for i in range(yym.shape[1]):
            for j in range(yym.shape[2]):
                for k in range(yym.shape[3]):
                    data_dict = {xx: xxm, yy: sample}
                    next_sample = sess.run(samples, feed_dict=data_dict)
                    sample[:, i, j, k, :] = next_sample[:, i, j, k, :]

        end = time()
        print('Taken : ', end - start)

    plt.figure(figsize=(12, 4))
    vmin, vmax = None, None
    plt.subplot(131)
    plt.imshow(yym[0, ..., 0].sum(axis=0), vmin=vmin, vmax=vmax)
    plt.colorbar()
    plt.subplot(132)
    plt.imshow(sample[0, ..., 0].sum(axis=0), vmin=vmin, vmax=vmax)
    plt.colorbar()
    plt.subplot(133)
    plt.imshow(sample2[0, ..., 0].sum(axis=0), vmin=vmin, vmax=vmax)
    plt.colorbar()
    plt.savefig(savepath + '/sampletrue_im%d' % max_steps)

    plt.figure()
    plt.hist(sample2.flatten(),
             range=(-5, 5),
             bins=100,
             label='predict',
             alpha=0.8)
    plt.hist(yym[0, ..., 0].flatten(),
             range=(-5, 5),
             bins=100,
             label='target',
             alpha=0.5)
    plt.hist(sample.flatten(),
             range=(-5, 5),
             bins=100,
             label='predicttrue',
             alpha=0.5)
    plt.legend()
    plt.savefig(savepath + '/truehist%d.png' % max_steps)
    plt.show()

    ##
    ii = 0
    k, ph = tools.power(yym[ii, ..., ], boxsize=bs / cube_sizes[index])
    k, pp1 = tools.power(sample[ii, ..., ], boxsize=bs / cube_sizes[index])
    k, pp1x = tools.power(sample[ii, ..., ],
                          yym[ii, ..., ],
                          boxsize=bs / cube_sizes[index])
    k, pp2 = tools.power(sample2[ii, ..., ], boxsize=bs / cube_sizes[index])
    k, pp2x = tools.power(sample2[ii, ..., ],
                          yym[ii, ..., ],
                          boxsize=bs / cube_sizes[index])

    plt.figure(figsize=(10, 4))
    plt.subplot(121)
    # plt.plot(k, ph, 'C%d-'%ii)
    plt.plot(k, pp1 / ph, 'C%d-' % ii)
    plt.plot(k, pp2 / ph, 'C%d--' % ii)
    plt.ylim(0, 1.5)
    plt.grid(which='both')
    plt.semilogx()
    # plt.loglog()

    plt.subplot(122)
    plt.plot(k, pp1x / (pp1 * ph)**0.5, 'C%d-' % ii)
    plt.plot(k, pp2x / (pp2 * ph)**0.5, 'C%d--' % ii)
    plt.ylim(0, 1)
    plt.grid(which='both')
    plt.semilogx()
    plt.savefig(savepath + '/sampletrue_2pt%d' % max_steps)
示例#15
0
except Exception as e:
    print(e)

with open(ofolder + 'params.json', 'w') as fp:
    json.dump(params, fp)
#######################################

x_test, y_test = testdata[0:1, 0], testdata[0:1, 1:]
x_test = tf.constant(x_test, dtype=tf.float32)
fpos = datamodel.pmpos(x_test)[1].numpy()[0] * bs / nc
bparams, bmodel = getbias(bs, nc, y_test[0, 0], x_test.numpy()[0], fpos)
bias_test = tf.constant([bparams[0], bparams[1]], dtype=tf.float32)
print('Bias test : ', bias_test)
bmodeltf = datamodel.biasfield(x_test, bias_test).numpy()
errormesh = y_test[:, 0] - bmodeltf
kerror, perror = tools.power(errormesh[0], boxsize=bs)
kerror, perror = kerror[1:], perror[1:]
ipkerror = interp1d(kerror,
                    perror,
                    bounds_error=False,
                    fill_value=(perror[0], perror.max()))
errormesh_test = tf.expand_dims(tf.constant(ipkerror(kmesh), dtype=tf.float32),
                                0)
#
if args.stdinit:
    x_init = tf.constant(y_test[:, 1] / b1eul, dtype=tf.float32)
    if args.diffps:
        x_init = x_init + linear_field(
            nc, bs, ipkdiff, batch_size=y_test.shape[0])
elif args.priorinit:
    x_init = linear_field(nc, bs, ipklin, batch_size=y_test.shape[0])
def check_module(modpath):

    print('\nTest module\n')

    tf.reset_default_graph()
    module = hub.Module(modpath + '/likelihood/')
    xx = tf.placeholder(tf.float32,
                        shape=[None, None, None, None, nchannels],
                        name='input')
    yy = tf.placeholder(tf.float32,
                        shape=[None, None, None, None, ntargets],
                        name='labels')
    samples = module(dict(features=xx, labels=yy), as_dict=True)['sample']
    loglik = module(dict(features=xx, labels=yy),
                    as_dict=True)['loglikelihood']

    preds = {}
    with tf.Session() as sess:
        sess.run(tf.initializers.global_variables())

        for seed in vseeds:
            xxm = np.stack(
                [np.pad(vmeshes[seed][0][i], pad, 'wrap') for i in ftname],
                axis=-1)
            #yym = np.stack([np.pad(vmeshes[seed][1]['pnncen'], pad, 'wrap'), np.pad(vmeshes[seed][1]['pnnsat'], pad, 'wrap')], axis=-1)
            yym = np.stack([vmeshes[seed][1][i] for i in tgname], axis=-1)
            print('xxm, yym shape = ', xxm.shape, yym.shape)
            preds[seed] = sess.run(samples,
                                   feed_dict={
                                       xx: np.expand_dims(xxm, 0),
                                       yy: np.expand_dims(yym, 0)
                                   })
            preds[seed] = np.squeeze(preds[seed])
            vmeshes[seed][0]['predict'] = preds[seed]  #[:, :, :]

    ##############################
    ##Power spectrum
    shape = [nc, nc, nc]
    kk = tools.fftk(shape, bs)
    kmesh = sum(i**2 for i in kk)**0.5

    yy = ['pos', 'mass']
    for iy in range(2):
        fig, axar = plt.subplots(2, 2, figsize=(8, 8))
        ax = axar[0]
        for seed in vseeds:
            predict, hpmeshd = vmeshes[seed][0]['predict'][..., iy], np.stack(
                [vmeshes[seed][1][i] for i in tgname], axis=-1)[..., iy]
            print(predict.shape, hpmeshd.shape)
            k, pkpred = tools.power(predict / predict.mean(),
                                    boxsize=bs,
                                    k=kmesh)
            k, pkhd = tools.power(hpmeshd / hpmeshd.mean(),
                                  boxsize=bs,
                                  k=kmesh)
            k, pkhx = tools.power(hpmeshd / hpmeshd.mean(),
                                  predict / predict.mean(),
                                  boxsize=bs,
                                  k=kmesh)
            ##
            ax[0].semilogx(k[1:], pkpred[1:] / pkhd[1:], label=seed)
            ax[1].semilogx(k[1:], pkhx[1:] / (pkpred[1:] * pkhd[1:])**0.5)

        for axis in ax.flatten():
            axis.legend(fontsize=14)
            axis.set_yticks(np.arange(0, 1.2, 0.1))
            axis.grid(which='both')
            axis.set_ylim(0., 1.1)
        ax[0].set_ylabel('Transfer function', fontsize=14)
        ax[1].set_ylabel('Cross correlation', fontsize=14)
        #
        ax = axar[1]
        #predict, hpmeshd = vmeshes[seed][0]['predict][...,iy] , np.stack([vmeshes[seed][1][i] for i in tgname], axis=-1)[...,iy]
        vmin, vmax = 0, (hpmeshd[:, :, :].sum(axis=0)).max()
        im = ax[0].imshow(predict[:, :, :].sum(axis=0), vmin=vmin, vmax=vmax)
        im = ax[1].imshow(hpmeshd[:, :, :].sum(axis=0), vmin=vmin, vmax=vmax)
        ax[0].set_title('Prediction', fontsize=15)
        ax[1].set_title('Truth', fontsize=15)
        plt.savefig(savepath + '/vpredict%d-%s.png' % (max_steps, yy[iy]))
        plt.show()

        plt.figure()
        plt.hist(hpmeshd.flatten(),
                 range=(-1, 20),
                 bins=100,
                 label='target',
                 alpha=0.8)
        plt.hist(predict.flatten(),
                 range=(-1, 20),
                 bins=100,
                 label='prediict',
                 alpha=0.5)
        plt.legend()
        plt.yscale('log')
        plt.savefig(savepath + '/hist%d-%s.png' % (max_steps, yy[iy]))
        plt.show()
示例#17
0
def check_module(modpath):

    print('\nTest module\n')

    tf.reset_default_graph()
    module = hub.Module(modpath + '/likelihood/')
    xx = tf.placeholder(tf.float32,
                        shape=[None, None, None, None, nchannels],
                        name='input')
    yy = tf.placeholder(tf.float32,
                        shape=[None, None, None, None, ntargets],
                        name='labels')
    samples = module(dict(features=xx, labels=yy), as_dict=True)['sample']
    loglik = module(dict(features=xx, labels=yy),
                    as_dict=True)['loglikelihood']

    preds = {}
    with tf.Session() as sess:
        sess.run(tf.initializers.global_variables())

        for seed in vseeds:
            xxm = np.stack(
                [np.pad(vmeshes[seed][0][i], pad, 'wrap') for i in ftname],
                axis=-1)
            #yym = np.stack([np.pad(vmeshes[seed][1]['pnncen'], pad, 'wrap'), np.pad(vmeshes[seed][1]['pnnsat'], pad, 'wrap')], axis=-1)
            yym = np.stack([vmeshes[seed][1][i] for i in tgname], axis=-1)
            print('xxm, yym shape = ', xxm.shape, yym.shape)
            print('xxm :', xxm.mean(), xxm.std())
            print('yym :', yym.mean(), yym.std())
            preds[seed] = sess.run(samples,
                                   feed_dict={
                                       xx: np.expand_dims(xxm, 0),
                                       yy: 0 * np.expand_dims(yym, 0)
                                   })
            vmeshes[seed][0]['predict'] = np.squeeze(preds[seed])

    ##############################
    ##Power spectrum
    shape = [nc, nc, nc]
    kk = tools.fftk(shape, bs)
    kmesh = sum(i**2 for i in kk)**0.5

    fig, axar = plt.subplots(2, 2, figsize=(8, 8))
    ax = axar[0]
    for seed in vseeds:
        for i, key in enumerate(['']):
            predict, hpmeshd = vmeshes[seed][0][
                'predict%s' % key], vmeshes[seed][1][tgname[0]],
            if predict.mean() < 1e-3: predict += 1
            if hpmeshd.mean() < 1e-3: hpmeshd += 1
            k, pkpred = tools.power(predict / predict.mean(),
                                    boxsize=bs,
                                    k=kmesh)
            k, pkhd = tools.power(hpmeshd / hpmeshd.mean(),
                                  boxsize=bs,
                                  k=kmesh)
            k, pkhx = tools.power(hpmeshd / hpmeshd.mean(),
                                  predict / predict.mean(),
                                  boxsize=bs,
                                  k=kmesh)
            ##
            ax[0].semilogx(k[1:], pkpred[1:] / pkhd[1:], label=seed)
            ax[1].semilogx(k[1:], pkhx[1:] / (pkpred[1:] * pkhd[1:])**0.5)
            ax[0].set_title(key, fontsize=12)

    for axis in ax.flatten():
        axis.legend(fontsize=14)
        axis.set_yticks(np.arange(0, 1.2, 0.1))
        axis.grid(which='both')
        axis.set_ylim(0., 1.1)
    ax[0].set_ylabel('Transfer function', fontsize=14)
    ax[1].set_ylabel('Cross correlation', fontsize=14)
    #
    ax = axar[1]
    for i, key in enumerate(['']):
        predict, hpmeshd = vmeshes[seed][0]['predict%s' %
                                            key], vmeshes[seed][1][tgname[0]],
        vmin, vmax = 0, (hpmeshd[:, :, :].sum(axis=0)).max()
        #im = ax[0].imshow(predict[:, :, :].sum(axis=0), vmin=vmin, vmax=vmax)
        #im = ax[1].imshow(hpmeshd[:, :, :].sum(axis=0), vmin=vmin, vmax=vmax)
        im = ax[0].imshow(predict[:, :, :].sum(axis=0))
        plt.colorbar(im, ax=ax[0])
        im = ax[1].imshow(hpmeshd[:, :, :].sum(axis=0))
        plt.colorbar(im, ax=ax[1])
        ax[0].set_title(key, fontsize=15)
    ax[0].set_title('Prediction', fontsize=15)
    ax[1].set_title('Truth', fontsize=15)
    plt.savefig(savepath + '/vpredict%d.png' % max_steps)
    plt.show()

    plt.figure()
    plt.hist(vmeshes[100][0]['predict'].flatten(), range=(-5, 5), bins=100)
    plt.hist(vmeshes[100][1][tgname[0]].flatten(),
             alpha=0.5,
             range=(-5, 5),
             bins=100)
    plt.savefig(savepath + '/hist%d.png' % max_steps)
    plt.show()

    dosampletrue = False
    if max_steps in [
            50, 100, 500, 1000, 5000, 15000, 25000, 35000, 45000, 55000, 65000
    ]:
        dosampletrue = True
        csize = 16
    if max_steps in [3000, 10000, 20000, 30000, 40000, 50000, 60000, 70000]:
        dosampletrue = True
        csize = 32
    if dosampletrue: sampletrue(modpath, csize)
def main(_):

    dtype = tf.float32

    startw = time.time()

    tf.random.set_random_seed(100)
    np.random.seed(100)

    # Compute a few things first, using simple tensorflow
    a0 = FLAGS.a0
    a = FLAGS.af
    nsteps = FLAGS.nsteps
    bs, nc = FLAGS.box_size, FLAGS.nc
    klin = np.loadtxt('../data/Planck15_a1p00.txt').T[0]
    plin = np.loadtxt('../data/Planck15_a1p00.txt').T[1]
    ipklin = iuspline(klin, plin)
    stages = np.linspace(a0, a, nsteps, endpoint=True)

    tf.reset_default_graph()
    # Run normal flowpm to generate data
    ic = np.load('../data/poisson_L%04d_N%03d/ic.npy' % (bs, nc))
    fin = np.load('../data/poisson_L%04d_N%03d/final.npy' % (bs, nc))
    data = np.load('../data/poisson_L%04d_N%03d/psample_%0.2f.npy' %
                   (bs, nc, plambda))

    k, pic = tools.power(ic[0] + 1, boxsize=bs)
    k, pfin = tools.power(fin[0], boxsize=bs)
    plt.plot(k, pic)
    plt.plot(k, pfin)
    plt.loglog()
    plt.grid(which='both')
    plt.savefig('pklin.png')
    plt.close()

    print(pic)
    print(pfin)
    #sys.exit(-1)

    ################################################################
    tf.reset_default_graph()
    print('ic constructed')

    #noise = np.random.normal(0, 1, nc**3).reshape(fin.shape).astype(np.float32)*1
    #data_noised = fin + noise
    #data = data_noised

    startpos = np.random.normal(0, 1, nc**3).reshape(fin.shape).astype(
        np.float32) * 1
    startpos = startpos.flatten()

    x0 = tf.placeholder(dtype=tf.float32,
                        shape=data.flatten().shape,
                        name='initlin')
    xlin = tf.placeholder(dtype=tf.float32, shape=data.shape, name='linfield')
    Rsm = tf.placeholder(tf.float32, name='smoothing')

    def recon_prototype(linearflat):
        """
        """
        linear = tf.reshape(linearflat, data.shape)
        #

        #loss = tf.reduce_sum(tf.square(linear - minimum))
        state = lpt_init(linear, a0=0.1, order=1)
        final_state = nbody(state, stages, FLAGS.nc)
        final_field = cic_paint(tf.zeros_like(linear), final_state[0])
        #final_field = pmgraph(linear)
        base = final_field

        if FLAGS.anneal:
            Rsmsq = tf.multiply(Rsm * bs / nc, Rsm * bs / nc)
            smwts = tf.exp(tf.multiply(-kmesh**2, Rsmsq))
            basek = r2c3d(base, norm=nc**3)
            basek = tf.multiply(basek, tf.cast(smwts, tf.complex64))
            base = c2r3d(basek, norm=nc**3)

        galmean = tfp.distributions.Poisson(rate=plambda * (1 + base))
        logprob = -tf.reduce_sum(galmean.log_prob(data))
        #logprob = tf.multiply(logprob, 1/nc**3, name='logprob')

        #Prior
        lineark = r2c3d(linear, norm=nc**3)
        priormesh = tf.square(tf.cast(tf.abs(lineark), tf.float32))
        prior = tf.reduce_sum(tf.multiply(priormesh, 1 / priorwt))
        #prior = tf.multiply(prior, 1/nc**3, name='prior')
        #
        loss = logprob + prior

        grad = tf.gradients(loss, linearflat)
        print(grad)
        return loss, grad[0]

    @tf.function
    def min_lbfgs():
        return tfp.optimizer.lbfgs_minimize(
            #make_val_and_grad_fn(recon_prototype),
            recon_prototype,
            initial_position=x0,
            tolerance=1e-10,
            max_iterations=FLAGS.niter)

    tfinal_field = pmgraph(xlin)

    RRs = [2.0, 1.0, 0.0]
    start0 = time.time()
    with tf.Session() as sess:

        for iR, RR in enumerate(RRs):

            start = time.time()
            results = sess.run(min_lbfgs(), {Rsm: RR, x0: startpos})
            print("\n")
            print(results)
            print("\n")
            startpos = results.position
            print(startpos)
            print("\nTime taken for %d iterations: " % FLAGS.niter,
                  time.time() - start)

            minic = startpos.reshape(data.shape)
            minfin = sess.run(tfinal_field, {xlin: minic})
            dg.saveimfig("R%d" % RR, [minic, minfin], [ic, fin], fpath + '')
            dg.save2ptfig("R%d" % RR, [minic, minfin], [ic, fin], fpath + '',
                          bs)

            np.save(fpath + 'recon-icR%d' % RR, minic)
            np.save(fpath + 'recon-finalR%d' % RR, minfin)

    #tf.reset_default_graph()
    print("\n")
    print('\nminimized\n')
    print('\nTotal time taken %d iterations: ' % (len(RRs) * FLAGS.niter),
          time.time() - start0)

    #tfic = linear_field(FLAGS.nc, FLAGS.box_size, ipklin, batch_size=1, seed=100, dtype=dtype)*0 + minimum.reshape(data_noised.shape)
    #state = lpt_init(tfic, a0=0.1, order=1)
    #final_state = nbody(state,  stages, FLAGS.nc)
    #tfinal_field = cic_paint(tf.zeros_like(tfic), final_state[0])

    ##
    exit(0)
示例#19
0
def main(_):

    dtype = tf.float32

    startw = time.time()

    tf.random.set_random_seed(100)
    np.random.seed(100)

    # Compute a few things first, using simple tensorflow
    a0 = FLAGS.a0
    a = FLAGS.af
    nsteps = FLAGS.nsteps
    bs, nc = FLAGS.box_size, FLAGS.nc
    klin = np.loadtxt('../data/Planck15_a1p00.txt').T[0]
    plin = np.loadtxt('../data/Planck15_a1p00.txt').T[1]
    ipklin = iuspline(klin, plin)
    stages = np.linspace(a0, a, nsteps, endpoint=True)

    tf.reset_default_graph()
    # Run normal flowpm to generate data
    try:
        ic, fin = np.load(fpath + 'ic.npy'), np.load(fpath + 'final.npy')
        print('Data loaded')
    except Exception as e:
        print('Exception occured', e)
        tfic = linear_field(FLAGS.nc,
                            FLAGS.box_size,
                            ipklin,
                            batch_size=1,
                            seed=100,
                            dtype=dtype)
        if FLAGS.nbody:
            state = lpt_init(tfic, a0=0.1, order=1)
            final_state = nbody(state, stages, FLAGS.nc)
        else:
            final_state = lpt_init(tfic, a0=stages[-1], order=1)
        tfinal_field = cic_paint(tf.zeros_like(tfic), final_state[0])
        with tf.Session() as sess:
            ic, fin = sess.run([tfic, tfinal_field])
        np.save(fpath + 'ic', ic)
        np.save(fpath + 'final', fin)

    k, pic = tools.power(ic[0] + 1, boxsize=bs)
    k, pfin = tools.power(fin[0], boxsize=bs)
    plt.plot(k, pic)
    plt.plot(k, pfin)
    plt.loglog()
    plt.grid(which='both')
    plt.savefig('pklin.png')
    plt.close()

    print(pic)
    print(pfin)
    #sys.exit(-1)

    ################################################################
    tf.reset_default_graph()
    print('ic constructed')

    noise = np.random.normal(0, 1, nc**3).reshape(fin.shape).astype(
        np.float32) * 1
    data_noised = fin + noise
    data = data_noised

    startpos = noise.copy().flatten().astype(np.float32)

    x0 = tf.placeholder(dtype=tf.float32,
                        shape=data.flatten().shape,
                        name='initlin')
    Rsm = tf.placeholder(tf.float32, name='smoothing')

    def recon_prototype(linearflat):
        """
        """

        linear = tf.reshape(linearflat, data.shape)
        #

        #loss = tf.reduce_sum(tf.square(linear - minimum))

        state = lpt_init(linear, a0=0.1, order=1)
        final_state = nbody(state, stages, FLAGS.nc)
        final_field = cic_paint(tf.zeros_like(linear), final_state[0])

        residual = final_field - data.astype(np.float32)
        base = residual
        Rsmsq = tf.multiply(Rsm * bs / nc, Rsm * bs / nc)
        smwts = tf.exp(tf.multiply(-kmesh**2, Rsmsq))
        basek = r2c3d(base, norm=nc**3)
        basek = tf.multiply(basek, tf.cast(smwts, tf.complex64))
        base = c2r3d(basek, norm=nc**3)
        #
        chisq = tf.multiply(base, base)
        chisq = tf.reduce_sum(chisq)
        chisq = tf.multiply(chisq, 1 / nc**3, name='chisq')

        #Prior
        lineark = r2c3d(linear, norm=nc**3)
        priormesh = tf.square(tf.cast(tf.abs(lineark), tf.float32))
        prior = tf.reduce_sum(tf.multiply(priormesh, 1 / priorwt))
        prior = tf.multiply(prior, 1 / nc**3, name='prior')
        #
        loss = chisq + prior

        grad = tf.gradients(loss, linearflat)
        print(grad)
        return loss, grad[0]

    @tf.function
    def min_lbfgs():
        return tfp.optimizer.lbfgs_minimize(
            #make_val_and_grad_fn(recon_prototype),
            recon_prototype,
            initial_position=x0,
            tolerance=1e-10,
            max_iterations=100)

    with tf.Session() as sess:
        start = time.time()
        results = sess.run(min_lbfgs(), {Rsm: 2, x0: startpos})
        print("\n")
        print(results)
        print("\n")
        minimum = results.position
        print(minimum)
        print("\nTime taken : ", time.time() - start)

        start = time.time()
        results = sess.run(min_lbfgs(), {Rsm: 1, x0: minimum})
        print("\n")
        print(results)
        minimum = results.position
        print("\n")
        print(minimum)
        print("\nTime taken : ", time.time() - start)

        start = time.time()
        results = sess.run(min_lbfgs(), {Rsm: 0, x0: minimum})
        print("\n")
        print(results)
        minimum = results.position
        print("\n")
        print(minimum)
        print("\nTime taken : ", time.time() - start)

    tf.reset_default_graph()
    print("\n")
    print('\nminimized\n')

    tfic = linear_field(
        FLAGS.nc, FLAGS.box_size, ipklin, batch_size=1, seed=100,
        dtype=dtype) * 0 + minimum.reshape(data_noised.shape)
    state = lpt_init(tfic, a0=0.1, order=1)
    final_state = nbody(state, stages, FLAGS.nc)
    tfinal_field = cic_paint(tf.zeros_like(tfic), final_state[0])
    with tf.Session() as sess:
        minic, minfin = sess.run([tfic, tfinal_field])

    dg.saveimfig(0, [minic, minfin], [ic, fin], fpath + '')
    dg.save2ptfig(0, [minic, minfin], [ic, fin], fpath + '', bs)

    np.save(fpath + 'recon0ic', minic)
    np.save(fpath + 'recon-final', minfin)

    ##
    exit(0)
示例#20
0
def main():
    #bs, nc = 400, 64
    #ncf, stepf = nc*4, 40
    numd = 1e-3
    num = int(numd*bs**3)
    seed = 100     


    path = '//mnt/ceph/users/cmodi/cosmo4d/z00/'
    dyn = "%02dstep_B1"%nsteps
    dynf = "%02dstep_B1"%nstepsf
    hpath = path + '/L%04d_N%04d_%s//'%(bs, ncf, dynf)
    path = path + '/L%04d_N%04d_%s//'%(bs, nc, dyn)

    ic = tools.readbigfile(path + '/L%04d_N%04d_S%04d_%02dstep/mesh/s/'%(bs, nc, seed, nsteps))
    final = tools.readbigfile(path + '/L%04d_N%04d_S%04d_%02dstep/mesh/d/'%(bs, nc, seed, nsteps))
    
    hpos = tools.readbigfile(hpath + '/L%04d_N%04d_S%04d_%02dstep/FOF/PeakPosition/'%(bs, ncf, seed, nstepsf))[:num]
    hmassall = tools.readbigfile(hpath + '/L%04d_N%04d_S%04d_%02dstep/FOF/Mass/'%(bs, ncf, seed, nstepsf)).flatten()
    print(hmassall.shape, hmassall.shape[0]/bs**3, hmassall.shape[0]/bs**3 /numd)
    hmass = hmassall[:num]
    print(hmass.shape, hmass.shape[0]/bs**3, hmass.shape[0]/bs**3 /numd)
    hmeshpos = tools.paintcic(hpos, bs, nc)
    hmeshmass = tools.paintcic(hpos, bs, nc, hmass.flatten()*1e10)
    hmeshmass /= hmeshmass.mean()
    hmeshmass -= 1
    hmeshpos /= hmeshpos.mean()
    hmeshpos -= 1

    if posdata: data = tf.constant(hmeshpos.reshape(1, nc, nc, nc), dtype=tf.float32)
    else: data = tf.constant(hmeshmass.reshape(1, nc, nc, nc), dtype=tf.float32)
    
    base = hmeshpos
    #base = (base - base.mean())/base.mean()
    pfin = tools.power(final, boxsize=bs)[1]
    ph = tools.power(1+base, boxsize=bs)[1]
    bias = ((ph[1:5]/pfin[1:5])**0.5).mean()

    tfdisplaced, tfrandom = standardrecon(data, tf.expand_dims(tf.constant(hpos, dtype=tf.float32), 0),
                                          tf.constant(bias, dtype=tf.float32), R=tf.constant(8, dtype=tf.float32))
    
    displaced, random = tfdisplaced.numpy()[0], tfrandom.numpy()[0]

    displaced /= displaced.mean()
    displaced -= 1
    random /= random.mean()
    random -= 1
    recon = np.squeeze(displaced - random)
    print(recon.mean())
    print(displaced.shape, random.shape)

    import matplotlib.pyplot as plt
    plt.figure(figsize = (9, 4))
    plt.subplot(131)
    plt.imshow(ic.sum(axis=0))
    plt.subplot(132)
    plt.imshow(data.numpy()[0].sum(axis=0))
    plt.subplot(133)
    plt.imshow(recon.sum(axis=0))
    plt.savefig('tmp.png')
    plt.close()

    print(ic.mean(),  recon.mean())
    k, p1 = tools.power(ic+1, boxsize=bs)
    p2 = tools.power(recon+1, boxsize=bs)[1]
    px = tools.power(ic+1, f2=recon+1, boxsize=bs)[1]
    plt.plot(k, p2/p1)
    plt.plot(k, px/(p1*p2)**0.5, '--')
    plt.semilogx()
    plt.savefig('tmp2.png')
    plt.close()


    for R in [4, 8, 16, 24, 32, 64, 128, 200, 256]:
        tfdisplaced, tfrandom = standardrecon(data, tf.expand_dims(tf.constant(hpos, dtype=tf.float32), 0),
                                          tf.constant(bias, dtype=tf.float32), R=tf.constant(R, dtype=tf.float32))
    
        displaced, random = tfdisplaced.numpy()[0], tfrandom.numpy()[0]

        displaced /= displaced.mean()
        displaced -= 1
        random /= random.mean()
        random -= 1
        recon = np.squeeze(displaced - random)

        print(ic.mean(),  recon.mean())
        k, p1 = tools.power(ic+1, boxsize=bs)
        p2 = tools.power(recon+1, boxsize=bs)[1]
        px = tools.power(ic+1, f2=recon+1, boxsize=bs)[1]
        #plt.plot(k, p2/p1)
        plt.plot(k, px/(p1*p2)**0.5, '-', label=R)
    plt.semilogx()
    plt.legend()
    plt.semilogx()
    plt.grid(which='both')
    plt.ylim(-0.2, 1.2)
    plt.savefig('stdRcompare.png')
示例#21
0
                                       lr=0.5,
                                       x_init=x_init,
                                       useprior=True)

check_2pt(
    datamodel,
    #[[x_test, y_test], [x_init, minic]],
    #[[x_test, y_test], [pred_adam, pred_adam10, minic]], grad_params, ofolder + 'fid_recon')
    [[x_test + 1., y_test], [x_init + 1., minic + 1.]],
    [[x_test + 1., y_test], [pred_adam + 1., pred_adam10 + 1., minic + 1.]],
    grad_params,
    ofolder + 'fid_recon')

bmodeltf = datamodel.biasfield(x_test, bias)
error = y_test - bmodeltf
k, ph = tools.power(y_test.numpy()[0], boxsize=bs)
k, pb = tools.power(bmodeltf.numpy()[0], boxsize=bs)
kerror, perr = tools.power(error.numpy()[0] + 1, boxsize=bs)
kny = nc * np.pi / bs
cutoff = 1.5
perr[np.where(kerror > cutoff * kny)] = perr[np.where(
    kerror > cutoff * kny)[0][0]]
k, px = tools.power(y_test.numpy()[0], f2=bmodeltf.numpy()[0], boxsize=bs)

fig, ax = plt.subplots(1, 2, figsize=(9, 4))
ax[0].plot(k, ph, label='halo')
ax[0].plot(k, pb, '--', label='bias')
ax[0].plot(k, perr, label='error')
ax[0].loglog()
ax[1].plot(k, px / (ph * pb)**0.5)
ax[1].plot(k, (pb / ph)**0.5, '--', label='tf')
示例#22
0
def sampletrue(modpath):
    print('sampling true')
    tf.reset_default_graph()
    module = hub.Module(modpath + '/likelihood/')
    xx = tf.placeholder(tf.float32,
                        shape=[None, None, None, None, nchannels],
                        name='input')
    yy = tf.placeholder(tf.float32,
                        shape=[None, None, None, None, ntargets],
                        name='labels')
    samples = module(dict(features=xx, labels=yy), as_dict=True)['sample']
    loglik = module(dict(features=xx, labels=yy),
                    as_dict=True)['loglikelihood']

    #
    j = 0
    bs, nc = bsnclist[j]

    with tf.Session() as sess:
        sess.run(tf.initializers.global_variables())

        start = time()
        vseeds = np.random.choice(test_features[j].shape[0], 1)
        xxm = test_features[j][vseeds]
        yym = test_target[j][vseeds]
        print('xxm, yym shape = ', xxm.shape, yym.shape)

        sample = np.zeros_like(yym)
        sample2 = sess.run(samples, feed_dict={xx: xxm, yy: yym * 0})
        for i in range(yym.shape[1]):
            for j in range(yym.shape[2]):
                for k in range(yym.shape[3]):
                    data_dict = {xx: xxm, yy: sample}
                    next_sample = sess.run(samples, feed_dict=data_dict)
                    sample[:, i, j, k, :] = next_sample[:, i, j, k, :]

        end = time()
        print('Taken : ', end - start)

    plt.figure(figsize=(12, 4))
    vmin, vmax = None, None
    plt.subplot(131)
    plt.imshow(yym[0, ..., 0].sum(axis=0), vmin=vmin, vmax=vmax)
    plt.colorbar()
    plt.title('Data')
    plt.subplot(132)
    plt.imshow(sample[0, ..., 0].sum(axis=0), vmin=vmin, vmax=vmax)
    plt.colorbar()
    plt.title('Correct sample')
    plt.subplot(133)
    plt.imshow(sample2[0, ..., 0].sum(axis=0), vmin=vmin, vmax=vmax)
    plt.colorbar()
    plt.title('Single pass sample')
    plt.savefig(savepath + '/sampletrue_im%d' % max_steps)

    ##
    ii = 0
    k, ph = tools.power(yym[ii, ..., ], boxsize=bs)
    k, pp1 = tools.power(sample[ii, ..., ], boxsize=bs)
    k, pp1x = tools.power(sample[ii, ..., ], yym[ii, ..., ], boxsize=bs)
    k, pp2 = tools.power(sample2[ii, ..., ], boxsize=bs)
    k, pp2x = tools.power(sample2[ii, ..., ], yym[ii, ..., ], boxsize=bs)

    plt.figure(figsize=(10, 4))
    plt.subplot(121)
    # plt.plot(k, ph, 'C%d-'%ii)
    plt.plot(k, pp1 / ph, label='Correct')
    plt.plot(k, pp2 / ph, label='Single Pass')
    plt.ylim(0, 1.5)
    plt.grid(which='both')
    plt.semilogx()
    plt.legend()
    # plt.loglog()

    plt.subplot(122)
    plt.plot(k, pp1x / (pp1 * ph)**0.5)
    plt.plot(k, pp2x / (pp2 * ph)**0.5)
    plt.ylim(0, 1)
    plt.grid(which='both')
    plt.semilogx()
    plt.savefig(savepath + '/sampletrue_2pt%d' % max_steps)
示例#23
0
def check_module(modpath):

    print('\nTest module\n')
    tf.reset_default_graph()
    module = hub.Module(modpath + '/likelihood/')
    xx = tf.placeholder(tf.float32,
                        shape=[None, None, None, None, nchannels],
                        name='input')
    yy = tf.placeholder(tf.float32,
                        shape=[None, None, None, None, ntargets],
                        name='labels')
    samples = module(dict(features=xx, labels=yy), as_dict=True)['sample']
    loglik = module(dict(features=xx, labels=yy),
                    as_dict=True)['loglikelihood']

    for j in range(nsizes):

        bs, nc = bsnclist[j]

        with tf.Session() as sess:
            sess.run(tf.initializers.global_variables())

            vseeds = np.random.choice(test_features[j].shape[0], 10)
            xxm = test_features[j][vseeds]
            yym = test_target[j][vseeds]
            print('xxm, yym shape = ', xxm.shape, yym.shape)
            preds = sess.run(samples, feed_dict={xx: xxm, yy: yym})

        ##############################
        ##Power spectrum
        shape = [nc, nc, nc]
        kk = tools.fftk(shape, bs)
        kmesh = sum(i**2 for i in kk)**0.5
        print(kmesh.shape)
        print(preds.shape, yym.shape)
        fig, axar = plt.subplots(2, 2, figsize=(8, 8))
        ax = axar[0]
        for iseed, seed in enumerate(vseeds):
            predict, hpmeshd = np.squeeze(preds[iseed]), np.squeeze(yym[iseed])
            k, pkpred = tools.power(predict / predict.mean(),
                                    boxsize=bs,
                                    k=kmesh)
            k, pkhd = tools.power(hpmeshd / hpmeshd.mean(),
                                  boxsize=bs,
                                  k=kmesh)
            k, pkhx = tools.power(hpmeshd / hpmeshd.mean(),
                                  predict / predict.mean(),
                                  boxsize=bs,
                                  k=kmesh)
            ##
            ax[0].semilogx(k[1:], pkpred[1:] / pkhd[1:], label=seed)
            ax[1].semilogx(k[1:], pkhx[1:] / (pkpred[1:] * pkhd[1:])**0.5)

        for axis in ax.flatten():
            axis.legend(fontsize=14, ncol=3)
            axis.set_yticks(np.arange(0, 1.2, 0.1))
            axis.grid(which='both')
            axis.set_ylim(0., 1.1)
        ax[0].set_ylabel('Transfer function', fontsize=14)
        ax[1].set_ylabel('Cross correlation', fontsize=14)
        #
        ax = axar[1]
        vmin, vmax = 1, (hpmeshd[:, :, :].sum(axis=0)).max()
        im = ax[0].imshow(predict[:, :, :].sum(axis=0), vmin=vmin, vmax=vmax)
        plt.colorbar(im, ax=ax[0])
        im = ax[1].imshow(hpmeshd[:, :, :].sum(axis=0), vmin=vmin, vmax=vmax)
        plt.colorbar(im, ax=ax[1])

        ax[0].set_title('Prediction', fontsize=15)
        ax[1].set_title('Truth', fontsize=15)
        plt.savefig(savepath + '/vpredict%d-%d.png' % (nc, max_steps))
        plt.show()

        plt.figure()
        plt.hist(yym.flatten(),
                 range=(-1, 20),
                 bins=100,
                 label='target',
                 alpha=0.8)
        plt.hist(preds.flatten(),
                 range=(-1, 20),
                 bins=100,
                 label='prediict',
                 alpha=0.5)
        plt.legend()
        plt.savefig(savepath + '/hist%d-%d.png' % (nc, max_steps))
        plt.show()
        ##

    dosampletrue = False
    if max_steps in [100, 5000, 10000, 15000, 20000, 25000, 30000]:
        dosampletrue = True
        csize = 32
    if dosampletrue: sampletrue(modpath)
示例#24
0
def main(_):

    infield = True
    dtype = tf.float32
    mesh_shape = mtf.convert_to_shape(FLAGS.mesh_shape)
    nc, bs = FLAGS.nc, FLAGS.box_size
    a0, a, nsteps = FLAGS.a0, FLAGS.af, FLAGS.nsteps
    stages = np.linspace(a0, a, nsteps, endpoint=True)
    numd = 1e-3

    ##Begin here
    klin = np.loadtxt('../data/Planck15_a1p00.txt').T[0]
    plin = np.loadtxt('../data/Planck15_a1p00.txt').T[1]
    ipklin = iuspline(klin, plin)

    #pypath = '/global/cscratch1/sd/chmodi/cosmo4d/output/version2/L0400_N0128_05step-fof/lhd_S0100/n10/opt_s999_iM12-sm3v25off/meshes/'
    final = tools.readbigfile('../data//L0400_N0128_S0100_05step/mesh/d/')
    ic = tools.readbigfile('../data/L0400_N0128_S0100_05step/mesh/s/')
    fpos = tools.readbigfile(
        '../data/L0400_N0128_S0100_05step/dynamic/1/Position/')

    hpos = tools.readbigfile(
        '../data/L0400_N0512_S0100_40step/FOF/PeakPosition//')[1:int(bs**3 *
                                                                     numd)]
    hmass = tools.readbigfile(
        '../data/L0400_N0512_S0100_40step/FOF/Mass//')[1:int(bs**3 *
                                                             numd)].flatten()

    meshpos = tools.paintcic(hpos, bs, nc)
    meshmass = tools.paintcic(hpos, bs, nc, hmass.flatten() * 1e10)
    data = meshmass
    data /= data.mean()
    data -= 1
    kv = tools.fftk([nc, nc, nc], bs, symmetric=True, dtype=np.float32)
    datasm = tools.fingauss(data, kv, 3, np.pi * nc / bs)
    ic, data = np.expand_dims(ic, 0), np.expand_dims(data,
                                                     0).astype(np.float32)
    datasm = np.expand_dims(datasm, 0).astype(np.float32)
    print("Min in data : %0.4e" % datasm.min())

    np.save(fpath + 'ic', ic)
    np.save(fpath + 'data', data)

    ####################################################
    #
    tf.reset_default_graph()
    tfic = tf.constant(ic.astype(np.float32))
    state = lpt_init(tfic, a0=0.1, order=1)
    final_state = nbody(state, stages, FLAGS.nc)
    tfinal_field = cic_paint(tf.zeros_like(tfic), final_state[0])
    with tf.Session() as sess:
        state = sess.run(final_state)

    fpos = state[0, 0] * bs / nc
    bparams, bmodel = getbias(bs, nc, data[0] + 1, ic[0], fpos)
    #bmodel += 1 #np.expand_dims(bmodel, 0) + 1
    errormesh = data - np.expand_dims(bmodel, 0)
    kerror, perror = tools.power(errormesh[0] + 1, boxsize=bs)
    kerror, perror = kerror[1:], perror[1:]
    print("Error power spectra", kerror, perror)
    print("\nkerror", kerror.min(), kerror.max(), "\n")
    print("\nperror", perror.min(), perror.max(), "\n")
    suff = "-error"
    dg.saveimfig(suff, [ic, errormesh], [ic, data], fpath + '/figs/')
    dg.save2ptfig(suff, [ic, errormesh], [ic, data], fpath + '/figs/', bs)
    ipkerror = iuspline(kerror, perror)

    ####################################################

    #stdinit = srecon.standardinit(bs, nc, meshpos, hpos, final, R=8)

    recon_estimator = tf.estimator.Estimator(model_fn=model_fn,
                                             model_dir=fpath)

    def predict_input_fn(data=data,
                         M0=0.,
                         w=3.,
                         R0=0.,
                         off=None,
                         istd=None,
                         x0=None):
        features = {}
        features['datasm'] = data
        features['R0'] = R0
        features['x0'] = x0
        features['bparams'] = bparams
        features['ipkerror'] = [kerror, perror]  #ipkerror
        return features, None

    eval_results = recon_estimator.predict(
        input_fn=lambda: predict_input_fn(x0=ic), yield_single_examples=False)

    for i, pred in enumerate(eval_results):
        if i > 0: break

    suff = '-model'
    dg.saveimfig(suff, [pred['ic'], pred['model']], [ic, data],
                 fpath + '/figs/')
    dg.save2ptfig(suff, [pred['ic'], pred['model']], [ic, data],
                  fpath + '/figs/', bs)
    np.save(fpath + '/reconmeshes/ic_true' + suff, pred['ic'])
    np.save(fpath + '/reconmeshes/fin_true' + suff, pred['final'])
    np.save(fpath + '/reconmeshes/model_true' + suff, pred['model'])

    #
    randominit = np.random.normal(size=data.size).reshape(data.shape)
    #eval_results = recon_estimator.predict(input_fn=lambda : predict_input_fn(x0 = np.expand_dims(stdinit, 0)), yield_single_examples=False)
    eval_results = recon_estimator.predict(
        input_fn=lambda: predict_input_fn(x0=randominit),
        yield_single_examples=False)

    for i, pred in enumerate(eval_results):
        if i > 0: break

    suff = '-init'
    dg.saveimfig(suff, [pred['ic'], pred['model']], [ic, data],
                 fpath + '/figs/')
    dg.save2ptfig(suff, [pred['ic'], pred['model']], [ic, data],
                  fpath + '/figs/', bs)
    np.save(fpath + '/reconmeshes/ic_init' + suff, pred['ic'])
    np.save(fpath + '/reconmeshes/fin_init' + suff, pred['final'])
    np.save(fpath + '/reconmeshes/model_init' + suff, pred['model'])

    #
    # Train and evaluate model.
    RRs = [4., 2., 1., 0.5, 0.]
    niter = 100
    iiter = 0

    for R0 in RRs:

        print('\nFor iteration %d\n' % iiter)
        print('With  R0=%0.2f \n' % (R0))

        def train_input_fn():
            features = {}
            features['datasm'] = data
            features['R0'] = R0
            features['bparams'] = bparams
            features['ipkerror'] = [kerror, perror]  #ipkerror
            #features['x0'] = np.expand_dims(stdinit, 0)
            features['x0'] = randominit
            features['lr'] = 0.01
            return features, None

        recon_estimator.train(input_fn=train_input_fn, max_steps=iiter + niter)
        eval_results = recon_estimator.predict(input_fn=predict_input_fn,
                                               yield_single_examples=False)

        for i, pred in enumerate(eval_results):
            if i > 0: break

        iiter += niter  #
        suff = '-%d-R%d' % (iiter, R0)
        dg.saveimfig(suff, [pred['ic'], pred['model']], [ic, data],
                     fpath + '/figs/')
        dg.save2ptfig(suff, [pred['ic'], pred['model']], [ic, data],
                      fpath + '/figs/', bs)
        np.save(fpath + '/reconmeshes/ic' + suff, pred['ic'])
        np.save(fpath + '/reconmeshes/fin' + suff, pred['final'])
        np.save(fpath + '/reconmeshes/model' + suff, pred['model'])

    sys.exit(0)

    ##
    exit(0)
示例#25
0
def getbias(bs, nc, hmesh, basemesh, pos, doed=False, fpos=None, kmax=0.3, fitshear=False):

    
    print('Will fit for bias now')

    try: d0, d2, s2 = basemesh
    except:
        d0 = basemesh.copy()
        d0 -= basemesh.mean()
        d2 = 1.*d0**2
        d2 -= d2.mean()
        s2 = shear(d0)
        s2 -= 1.*d0**2
        s2 -= s2.mean()

    k, ph = tools.power(hmesh, boxsize = bs)    
    ik = numpy.where(k > kmax)[0][0]

    ed0 = tools.paintcic(pos, bs, nc, mass=d0.flatten())
    ed2 = tools.paintcic(pos, bs, nc, mass=d2.flatten())
    es2 = tools.paintcic(pos, bs, nc, mass=s2.flatten())
    if abs(ed0.mean()) < 1e-3: ed0 += 1
    if abs(ed2.mean()) < 1e-3: ed2 += 1
    if abs(es2.mean()) < 1e-3: es2 += 1
    
    ped0 = tools.power(ed0, boxsize=bs)[1]
    ped2 = tools.power(ed2, boxsize=bs)[1]
    pes2 = tools.power(es2, boxsize=bs)[1]

    pxed0d2 = tools.power(ed0, f2=ed2, boxsize=bs)[1]
    pxed0s2 = tools.power(ed0, f2=es2, boxsize=bs)[1]
    pxed2s2 = tools.power(ed2, f2=es2, boxsize=bs)[1]

    pxhed0 = tools.power(hmesh, f2=ed0, boxsize=bs)[1]
    pxhed2 = tools.power(hmesh, f2=ed2, boxsize=bs)[1]
    pxhes2 = tools.power(hmesh, f2=es2, boxsize=bs)[1]

    if doed:
        ed = tools.paintcic(pos, bs, nc, mass=np.ones(pos.shape[0]))
        ped = tools.power(ed, boxsize=bs)[1]
        pxhed = tools.power(hmesh, f2=ed, boxsize=bs)[1]
        pxedd0 = tools.power(ed, f2=ed0, boxsize=bs)[1]
        pxedd2 = tools.power(ed, f2=ed2, boxsize=bs)[1]
        pxeds2 = tools.power(ed, f2=es2, boxsize=bs)[1]

    def ftomin(bb, ii=ik, retp = False):
        b1, b2, bs = bb
        #
        if fitshear: pass
        else: bs = 0.
        #
        pred = b1**2 *ped0 + b2**2*ped2 + 2*b1*b2*pxed0d2 
        pred += bs**2 *pes2 + 2*b1*bs*pxed0s2 + 2*b2*bs*pxed2s2
        if doed: pred += ped + 2*b1*pxedd0 + 2*b2*pxedd2 + 2*bs*pxeds2 

        predx = 1*b1*pxhed0 + 1*b2*pxhed2
        predx += 1*bs*pxhes2
        if doed: predx += 1*pxhed

        if retp : return pred, predx
        chisq = (((ph + pred - 2*predx)[1:ii])**2).sum()**0.5.real
        return chisq.real

    print('Minimize\n')

#     b1, b2, bs2 = minimize(ftomin, [1, 1, 1], method='Nelder-Mead', options={'maxfev':10000}).x
    params =  minimize(ftomin, [1, 0, 0]).x

    b1, b2, bs2 = params

    print('\nBias fit params are : ', b1, b2, bs2)
    
    ed0 = tools.paintcic(pos, bs, nc, mass=d0.flatten())
    ed2 = tools.paintcic(pos, bs, nc, mass=d2.flatten())
    es2 = tools.paintcic(pos, bs, nc, mass=s2.flatten())
    if fpos is not None:
        ed0 = tools.paintcic(fpos, bs, nc, mass=d0.flatten())
        ed2 = tools.paintcic(fpos, bs, nc, mass=d2.flatten())
        es2 = tools.paintcic(fpos, bs, nc, mass=s2.flatten())
        mod = b1*ed0 + b2*ed2 + bs2*es2
    else:
        mod = b1*ed0 + b2*ed2 + bs2*es2
    if doed:
        ed = tools.paintcic(pos, bs, nc, mass=np.ones(pos.shape[0]))
        mod += ed
    
    return params, mod
示例#26
0
def main():
    """
    Model function for the CosmicRIM.
    """

    if args.parallel: rim = build_rim_parallel(params)
    else: rim = build_rim_split(params)
    grad_fn = recon_dm_grad
    #
    #
    traindata, testdata = get_data()
    idx = np.random.randint(0, traindata.shape[0], 1)
    xx, yy = traindata[idx,
                       0].astype(np.float32), traindata[idx,
                                                        1].astype(np.float32),
    x_init = np.random.normal(size=xx.size).reshape(xx.shape).astype(
        np.float32)
    x_pred = rim(x_init, yy, grad_fn)

    trainiter = args.trainiter
    rim.load_weights(ofolder + '%d' % trainiter)
    print('Loaded')
    idx = np.random.randint(0, testdata.shape[0], 1)
    x_test, y_test = testdata[idx, 0].astype(
        np.float32), testdata[idx, 1].astype(np.float32),
    x_init = np.random.normal(size=x_test.size).reshape(x_test.shape).astype(
        np.float32)
    pred = rim(tf.constant(x_init), tf.constant(y_test), grad_fn)

    fig, ax = plt.subplots(1, 2, figsize=(9, 4))
    k, pkt = tools.power(x_test[0], boxsize=bs)
    lss = ["-"] * 7 + ["--"] * 7
    print(lss)
    for i in range(pred.shape[0]):
        print(i, pred[i].shape, x_test.shape)
        k, pk = tools.power(pred[i, 0].numpy(), boxsize=bs)
        k, px = tools.power(pred[i, 0].numpy(), f2=x_test[0], boxsize=bs)
        rcc = px / (pkt * pk)**0.5
        print(rcc)
        ax[0].plot(k,
                   rcc,
                   'C%d' % (i % 7),
                   alpha=0.7,
                   ls=lss[(i % 7)],
                   label=i)
        ax[1].plot(k, (pk / pkt)**0.5,
                   'C%d' % (i % 7),
                   alpha=0.7,
                   ls=lss[(i % 7)])
    for axis in ax:
        axis.semilogx()
        axis.legend()
        axis.grid(which='both')
    ax[0].set_ylim(-0.1, 1.2)
    ax[1].set_ylim(-0.2, 2.5)
    plt.savefig('./figs/2pt-iters.png')
    plt.close()

    fig, ax = plt.subplots(2, 5, figsize=(14, 8))
    for i in range(10):
        ax.flatten()[i].imshow(pred[i + 1, 0].numpy().sum(axis=0))
    plt.savefig('./figs/im-iters.png')
    plt.close()

    lss = ['-', '--', ':', '-.']

    pred_adam = adam(tf.constant(x_init), tf.constant(y_test), grad_fn)
    pred_adam = [pred_adam[0].numpy(), pm(pred_adam)[0].numpy()]
    pred_adam10 = adam10(tf.constant(x_init), tf.constant(y_test), grad_fn)
    pred_adam10 = [pred_adam10[0].numpy(), pm(pred_adam10)[0].numpy()]
    minic, minfin = fid_recon.reconstruct(tf.constant(y_test),
                                          RRs=[1.0, 0.0],
                                          niter=args.rim_iter * 10,
                                          lr=0.1)
    compares = [pred_adam, pred_adam10, [minic[0], minfin[0]]]
    print('Test set generated')

    check_im(x_test[0], x_init[0], pred.numpy()[0], fname='rim-im')
    check_2pt(x_test, y_test, rim, grad_fn, compares, fname='rim-2pt')

    x_init = pred.numpy().copy()
    pred = rim(tf.constant(pred), tf.constant(y_test), grad_fn)[-1]
    check_im(x_test[0], x_init[0], pred.numpy()[0], fname='rim-im-pred')
    check_2pt(x_test, y_test, rim, grad_fn, compares, fname='rim-2pt-pred')

    x_init = y_test
    pred = rim(tf.constant(pred), tf.constant(y_test), grad_fn)[-1]
    check_im(x_test[0], x_init[0], pred.numpy()[0], fname='rim-im-data')
    check_2pt(x_test, y_test, rim, grad_fn, compares, fname='rim-2pt-data')

    x_init = x_test
    pred = rim(tf.constant(pred), tf.constant(y_test), grad_fn)[-1]
    check_im(x_test[0], x_init[0], pred.numpy()[0], fname='rim-im-truth')
    check_2pt(x_test, y_test, rim, grad_fn, compares, fname='rim-2pt-truth')