def load_sard_sampler_lib():
import ASAW_config
global libsardsampler
if libsardsampler == None:
#libsardsampler = c.cdll.LoadLibrary("/home/zwang/project/AdaptSAW/python/libsardsampler_ctypes.so")
libsardsampler = c.cdll.LoadLibrary(ASAW_config.get_lib_dir() + "libsardsampler_ctypes.so")
def load_im_sampler_lib():
global libimsampler
if libimsampler == None:
import ASAW_config
libimsampler = \
c.cdll.LoadLibrary(ASAW_config.get_lib_dir() + "libimsampler_ctypes.so")
test = isg.ISG3D_UAI(9, 9, 9)
elif test_name == 'rbm':
print 'Running RBM_UAI for {0} Iterations.'.format(num_iter)
test = isg.RBM_UAI()
elif test_name == 'ferrof':
print 'Running Ferro2D_Frustrated for {0} Iterations.'.format(num_iter)
test = isg.Ferro2D_Frustrated(60, 60)
elif test_name == 'chi':
print "Running Chimera."
test = isg.test = isg.Chimera(4,4,4)
temp = Ising_Gibbs(test)
import time
time_1 = time.time()
temp.gibbs_random(num_iter)
time_2 = time.time()
print "Sampling lasted: ", time_2 - time_1
print 'Saving results in ' + './Regular_Gibbs_' + test_name + '_' + str(num_iter) + '.npy'
cur_res_num = ASAW_config.get_and_inc_cur_res_num('path_config.cfg')
f = open('Regular_Gibbs_' + test_name + '_' + str(num_iter) + '.npy', 'w')
save(f, temp.energies[1:])
f.close()
temp.compute_acf(max_lag = min(num_iter-1, 500), subsample = max(num_iter/100000, 1))
temp.plots()
num_iter = int(sys.argv[1])
elif len(sys.argv) > 1:
num_iter = int(sys.argv[1])
if batch:
rbm = isg.RBM_UAI_BLOCK()
v = zeros(784)
total_energy = []
for i in xrange(5):
v[0:428] = ones(428)
bbs = Block_RBM_Sampler(rbm, v, None)
total_energy.append(bbs.iterate(num_iter))
cur_res_num = ASAW_config.get_and_inc_cur_res_num("path_config.cfg")
bbs.acf_plot_multi_energies(total_energy, res_num=cur_res_num)
f = open("Block_RBM_" + str(cur_res_num) + ".npy", "w")
save(f, total_energy)
f.close()
else:
rbm = isg.RBM_UAI_BLOCK()
v = zeros(784)
total_energy = []
v[0:428] = ones(428)
bbs = Block_RBM_Sampler(rbm, v, None)
import time
time_1 = time.time()
def cdirectGP(model, bounds, maxiter, maxtime, maxsample, acqfunc=None, xi=-1, beta=-1, scale=-1, delta=-1, **kwargs):
try:
if acqfunc == "ei":
acquisition = 0
parm = xi
elif acqfunc == "pi":
acquisition = 1
parm = xi
elif acqfunc == "ucb":
acquisition = 2
t = len(model.Y) + 1
NA = len(bounds)
parm = sqrt(scale * 2.0 * log(t ** (NA / 2 + 2) * pi ** 2 / (3.0 * delta)))
else:
raise NotImplementedError("unknown acquisition function %s" % acqfunc)
if isinstance(model.kernel, GaussianKernel_ard):
kerneltype = 0
elif isinstance(model.kernel, GaussianKernel_iso):
kerneltype = 1
elif isinstance(model.kernel, MaternKernel3):
kerneltype = 2
elif isinstance(model.kernel, MaternKernel5):
print "Matern 5"
kerneltype = 3
else:
raise NotImplementedError("kernel not implemented in C++: %s" % model.kernel.__class__)
lpath = ctypes.util.find_library("ego")
if lpath is None:
import ASAW_config
lpath = ASAW_config.get_ego_lib_dir() + "libego.so"
# print '\n[python] could not find ego library! Did you forget to export DYLD_LIBRARY_PATH?'
lib = cdll[lpath]
lib.acqmaxGP.restype = POINTER(c_double)
lib.acqmaxGP.argtypes = [
c_int,
POINTER(c_double),
POINTER(c_double),
POINTER(c_double),
POINTER(c_double),
POINTER(c_double),
c_int,
c_int,
c_int,
POINTER(c_double),
c_int,
POINTER(c_double),
POINTER(c_double),
c_double,
POINTER(c_double),
POINTER(c_double),
c_double,
c_double,
c_int,
c_int,
c_int,
]
NX = len(model.Y)
NA = len(bounds)
npbases = 0 if model.prior is None else len(model.prior.means)
pbtheta = 0 if model.prior is None else model.prior.theta
if model.prior is None:
c_pmeans = array([0], dtype=c_double)
c_pbeta = array([0], dtype=c_double)
c_pblowerb = array([0], dtype=c_double)
c_pbwidth = array([0], dtype=c_double)
else:
c_pmeans = array(array(model.prior.means).reshape(-1), dtype=c_double)
c_pbeta = array(model.prior.beta, dtype=c_double)
c_pblowerb = array(model.prior.lowerb, dtype=c_double)
c_pbwidth = array(model.prior.width, dtype=c_double)
c_lower = array([b[0] for b in bounds], dtype=c_double)
c_upper = array([b[1] for b in bounds], dtype=c_double)
c_hyper = array(model.kernel.hyperparams, dtype=c_double)
# TODO: use cholesky on the C++ side
if isinstance(model, PrefGaussianProcess) and model.C is not None:
c_invR = array(linalg.inv(model.R + linalg.inv(model.C)).reshape(-1), dtype=c_double)
else:
c_invR = array(linalg.inv(model.R).reshape(-1), dtype=c_double)
c_X = array(array(model.X).reshape(-1), dtype=c_double)
c_Y = array(model.Y, dtype=c_double)
# print c_int(NA)
# print c_lower.ctypes.data_as(POINTER(c_double))
# print c_upper.ctypes.data_as(POINTER(c_double))
# print c_invR.ctypes.data_as(POINTER(c_double))
# print c_X.ctypes.data_as(POINTER(c_double))
# print c_Y.ctypes.data_as(POINTER(c_double))
# print c_int(NX)
# print c_int(acqfunc)
# print c_int(kerneltype)
# print c_hyper.ctypes.data_as(POINTER(c_double))
# print c_int(npbases)
# print c_pmeans.ctypes.data_as(POINTER(c_double))
# print c_pbeta.ctypes.data_as(POINTER(c_double))
# print c_double(pbtheta)
# print c_pblowerb.ctypes.data_as(POINTER(c_double))
# print c_pbwidth.ctypes.data_as(POINTER(c_double))
# print c_double(xi)
# print c_double(model.noise)
# print c_int(maxiter)
# print c_int(maxtime)
# print c_int(maxsample)
# print '[python] calling C++ %s (%d) with X.shape = %s' % (acqfunc, acquisition, model.X.shape)
result = lib.acqmaxGP(
c_int(NA),
c_lower.ctypes.data_as(POINTER(c_double)),
c_upper.ctypes.data_as(POINTER(c_double)),
c_invR.ctypes.data_as(POINTER(c_double)),
c_X.ctypes.data_as(POINTER(c_double)),
c_Y.ctypes.data_as(POINTER(c_double)),
c_int(NX),
c_int(acquisition),
c_int(kerneltype),
c_hyper.ctypes.data_as(POINTER(c_double)),
c_int(npbases),
c_pmeans.ctypes.data_as(POINTER(c_double)),
c_pbeta.ctypes.data_as(POINTER(c_double)),
c_double(pbtheta),
c_pblowerb.ctypes.data_as(POINTER(c_double)),
c_pbwidth.ctypes.data_as(POINTER(c_double)),
c_double(parm),
c_double(model.noise),
c_int(maxiter),
c_int(maxtime),
c_int(maxsample),
)
# print '[python] result =', result.__class__
# print '[python] result =', result[0]
opt = -result[0]
optx = array([x for x in result[1 : NA + 1]])
# free the pointer
libc = CDLL(ctypes.util.find_library("libc"))
libc.free.argtypes = [c_void_p]
libc.free.restype = None
libc.free(result)
except:
try:
print "[python] C++ MaxEI implementation unavailable, attempting C++ DIRECT on Python objective function."
opt, optx = cdirect(ei.negf, bounds, maxiter=maxiter, maxtime=maxtime, maxsample=maxsample, **kwargs)
except:
# couldn't access cDIRECT, use Python DIRECT
print "[python] C++ DIRECT unavailable, attempting Python DIRECT"
opt, optx = direct(ei.negf, bounds, maxiter=maxiter, maxtime=maxtime, maxsample=maxsample, **kwargs)
opt = -opt
if False:
# do a few random searches to see if we can get a better result.
# mostly necessary for 1D or 2D optimizations which terminate too
# soon.
ei = EI(model)
for s in lhcSample(bounds, 500):
if -ei.negf(s) > opt:
opt = -ei.negf(s)
optx = s
return opt, optx
import ConfigParser
import ASAW_config
config = ConfigParser.RawConfigParser()
config.add_section('Section1')
config.set('Section1', 'lib_dir', ASAW_config.get_cur_path()+'python/')
with open('path_config.cfg', 'wb') as configfile:
config.write(configfile)
