def __init__(self, cdts, Rcut, hyp, Dist, centre_init):
"""
Constructor of the logposteriorModule
"""
rad, thet = Deg2pc(cdts, centre_init, Dist)
c, r, t, self.Rmax = TruncSort(cdts, rad, thet, Rcut)
self.pro = c[:, 2]
self.cdts = c[:, :2]
self.Dist = Dist
#------------- poisson ----------------
self.quadrants = [
0, np.pi / 2.0, np.pi, 3.0 * np.pi / 2.0, 2.0 * np.pi
]
self.poisson = st.poisson(len(r) / 4.0)
#-------------- priors ----------------
self.Prior_0 = st.norm(loc=centre_init[0], scale=hyp[0])
self.Prior_1 = st.norm(loc=centre_init[1], scale=hyp[1])
self.Prior_2 = st.uniform(loc=-0.5 * np.pi, scale=np.pi)
self.Prior_3 = st.halfcauchy(loc=0.01, scale=hyp[2])
self.Prior_4 = st.halfcauchy(loc=0.01, scale=hyp[3])
self.Prior_5 = st.halfcauchy(loc=0.01, scale=hyp[2])
self.Prior_6 = st.halfcauchy(loc=0.01, scale=hyp[3])
self.Prior_7 = st.truncexpon(b=hyp[4], loc=0.01, scale=hyp[5])
self.Prior_8 = st.truncexpon(b=hyp[4], loc=0.01, scale=hyp[5])
print("Module Initialized")
def get_gauss_distribution(twissfile='sequence_totrack.tfs', beam_t='FT',
sigmas=None, seed=None, n_part=100, noseeding=False,
output='initial_distribution.txt', **kwargs):
x0,y0,px0,py0,betx,bety,alfx,alfy,dx,dpx,dy,dpy,dpp_twiss = twissinit(twissfile)
beam = Beam(beam_t, **kwargs)
if not noseeding:
np.random.seed(seed)
if sigmas is None:
sigmas = beam.n_sigma
# Momentum distribution
if beam.pdist == 'unif':
dpp = np.random.uniform(beam.dpp_0-beam.dpp_d, beam.dpp_0+beam.dpp_d, n_part)
elif beam.pdist.startswith('gauss'):
sigp = float(beam.pdist[5:])
dpp = beam.dpp_0+truncnorm(-sigp, sigp, scale=(beam.dpp_d/sigp)).rvs(n_part)
else:
print "Warning: unknown pdist '"+beam.pdist+"', assuming uniform."
dpp = np.random.uniform(beam.dpp_0-beam.dpp_d, beam.dpp_0+beam.dpp_d, n_part)
pt = np.fromiter((beam.dpp_to_pt(d) for d in dpp), float)
# Transverse distributions (from action angle, J and theta)
pt_twiss = beam.dpp_to_pt(dpp_twiss)
jx = truncexpon(b=0.5*sigmas**2, scale=beam.emit_x).rvs(n_part)
thx = np.random.uniform(0, 2*np.pi, n_part)
x = x0 + np.sqrt(2*jx*betx)*np.cos(thx) + dx*(pt-pt_twiss)
px = px0 - np.sqrt(2*jx/betx)*(np.sin(thx)+alfx*np.cos(thx)) + dpx*(pt-pt_twiss)
jy = truncexpon(b=0.5*sigmas**2, scale=beam.emit_y).rvs(n_part)
thy = np.random.uniform(0, 2*np.pi, n_part)
y = y0 + np.sqrt(2*jy*bety)*np.cos(thy) + dy*(pt-pt_twiss)
py = py0 - np.sqrt(2*jy/bety)*(np.sin(thy)+alfy*np.cos(thy)) + dpy*(pt-pt_twiss)
# Output table
if output is not None:
normal = PrettyTable(['*', 'NUMBER', 'TURN', 'X', 'PX', 'Y', 'PY', 'T', 'PT', 'S', 'E'])
normal.align = 'r'
normal.left_padding_width = 0
normal.right_padding_width = 8
normal.border = False
normal.add_row(['$', '%d', '%d', '%le', '%le', '%le', '%le', '%le', '%le', '%le', '%le'])
for i in xrange(n_part):
normal.add_row([' ', i + 1, 0, x[i], px[i], y[i], py[i], 0.0000000, pt[i], 0.0000000, beam.energy])
with open(output, 'w') as fp:
fp.write(header())
fp.write(normal.get_string())
return x, px, y, py, pt
def predict(x,h0,w):
## input: x[L,N], h0, w[n]
## output: y[L]
x_min, x_max = -1., 1.
L,N = x.shape
y = np.zeros(L)
#x[0,:] = np.random.rand(1,N) #Initial values of x_i(0)
#Generating sequences of x_i(t+1)
for t in range(L):
h = x[t,:].dot(w) + h0
if h != 0.:
x_scale = 1./np.abs(h)
sampling = stats.truncexpon(b=(x_max-x_min)/x_scale, loc=x_min, scale=x_scale)
#truncated exponential dist exp(x h[i]) for x ~ [-1, 1]
sample = sampling.rvs(1) #obtain 1 samples
y[t] = -np.sign(h)*sample[0]
else:
y[t] = random.uniform(x_min, x_max)
return y
def logzsol_gen(self):
zsol = self.sp.zlegend / zsol_padova
d_ = stats.truncexpon(loc=0., scale=1., b=1.)
d_.random_state = self.RS
#
if 'logzsol' in self.override:
self.FSPS_args.update({'logzsol': self.override['logzsol']})
# 60% chance of linearly-uniform metallicity range
elif self.RS.rand() < .6:
self.FSPS_args.update({
'logzsol':
np.log10(
ut.lin_transform(r1=[0., 1.],
r2=[zsol.max(), zsol.min()],
x=d_.rvs()))
})
# 10% chance of logarithmically-uniform
else:
self.FSPS_args.update({
'logzsol':
self.RS.uniform(np.log10(zsol.min()), np.log10(zsol.max()))
})
def do_trial(subj: Model, sample_interval: float) -> float:
"""This function takes a subject and an interval time, and goes through
the process of an experiment trial.
Args:
subj (Model): The subject which will do the trial.
sample_interval (float): The interval time defining the trial.
Returns:
float: The (re)production time.
"""
# "Trials began with the presentation of a central fixation point for 1s,"
subj.time += 1
# "followed by the presentation of a warning stimulus ..."
# "After a variable delay ranging from 0.25-0.85s drawn randomly from a
# truncated exponential distribution, ..."
subj.time += truncexpon(0.6, 0.25).rvs(1, random_state=rng)
# "two 100ms flashes separated by the sample interval were presented."
subj.time += 0.1 # READY
subj.time += sample_interval
# "Production times, t_p, were measured from the center of the flash, (that
# is, 50ms after its onset) to when the key was pressed"
subj.time += 0.05 # SET
# implement cognitive model here
production_time = sample_interval
subj.time += production_time # GO
return production_time
def design_parameters(gap_params=None):
"""Generate a dictionary with default design parameters."""
# Distributions of pulses per trial
count = [1, 2, 3, 4, 5]
count_pmf = trunc_geom_pmf(count, .25)
# Distribution parameters in stimulus units
means = -1.1, -0.9
sd = .15
# Distributions in log-likelihood ratio units
llr_m, llr_sd = params_to_llr(means, sd)
dh, dl = stats.norm(+llr_m, llr_sd), stats.norm(-llr_m, llr_sd)
# Pulse gap duration
if gap_params is None:
gap_params = 3, 2, 2
gap_dist = stats.truncexpon(*gap_params)
# Design dictionary to pass to functions
design = dict(count=count,
count_pmf=count_pmf,
means=means,
sds=sd,
llr_m=llr_m,
llr_sd=llr_sd,
dh=dh,
dl=dl,
gap_dist=gap_dist)
return design
def loftedheight():
# constants
beta = (np.pi * 3.64**3) / (2.45**5)
eta = (9.35**2) / (np.pi * g * Hc**(2 / 3))
gamma = beta * eta**(5 / 2)
# Maximum lofted height
zmax = gamma * (
(Pa / Pb) *
(Cd / r0))**(3 / 2) * fire_line_intensity(dmc, dc)[0]**(5 / 3)
# Exponential distribution for lofting heights (P(Z>zmax)=1%)
lambd2 = np.log(100) / zmax
# Truncated exponentaional distribution starting at H
X = truncexpon(np.abs(zmax - h1) / (1 / lambd2),
loc=min(h1, zmax),
scale=1 / lambd2)
# Generates one random value based on the exponential distribution
Z = X.rvs(1)
return [zmax, Z]
def __init__(self,cdts,Rcut,hyp,Dist,centre_init):
"""
Constructor of the logposteriorModule
"""
rad,thet = Deg2pc(cdts,centre_init,Dist)
c,r,t,self.Rmax = TruncSort(cdts,rad,thet,Rcut)
self.pro = c[:,2]
self.cdts = c[:,:2]
self.Dist = Dist
#-------------- Finds the mode of the band -------
band_all = c[:,3]
idv = np.where(np.isfinite(c[:,3]))[0]
band = c[idv,3]
kde = st.gaussian_kde(band)
x = np.linspace(np.min(band),np.max(band),num=1000)
self.mode = x[kde(x).argmax()]
print "Mode of band at ",self.mode
#---- repleace NANs by mode -----
idnv = np.setdiff1d(np.arange(len(band_all)),idv)
band_all[idnv] = self.mode
self.delta_band = band_all - self.mode
#------------- poisson ----------------
self.quadrants = [0,np.pi/2.0,np.pi,3.0*np.pi/2.0,2.0*np.pi]
self.poisson = st.poisson(len(r)/4.0)
#-------------- priors ----------------
self.Prior_0 = st.norm(loc=centre_init[0],scale=hyp[0])
self.Prior_1 = st.norm(loc=centre_init[1],scale=hyp[1])
self.Prior_2 = st.uniform(loc=-0.5*np.pi,scale=np.pi)
self.Prior_3 = st.halfcauchy(loc=0.01,scale=hyp[2])
self.Prior_4 = st.halfcauchy(loc=0.01,scale=hyp[2])
self.Prior_5 = st.truncexpon(b=hyp[3],loc=2.01,scale=hyp[4])
self.Prior_6 = st.norm(loc=hyp[5],scale=hyp[6])
print "Module Initialized"
def density_trunc_exp(self, lower, upper, scale):
'''Samples x and y values in order to plot the truncated exponential distribution with the given parameters.'''
b = (upper - lower) / scale
x = np.linspace(lower, upper, 100)
y = stats.truncexpon(b, loc=lower, scale=scale).pdf(x)
return x, y
def build_priors(self):
"""
Builds the priors
:return:
"""
# samplingMult = 50
# bandwidthScalar = 2.0
# # build longitude, latitude and strike prior
# raw_data = pd.read_excel('./InputData/Fixed92kmFaultOffset50kmgapPts.xlsx')
# self.latlongstrikeprior = np.array(raw_data[['POINT_X', 'POINT_Y', 'Strike']])
# distrb0 = gaussian_kde(self.latlongstrikeprior.T)
#
# #Garret and spencer chose this 18 June 2019
# data2 = stats.norm.rvs(size = 1000,loc = np.log(8), scale = 0.05)
# distrb1 = gaussian_kde(data2)
#
# dists = [distrb0, distrb1]
depth_mu = 30000
depth_std = 5000
mindepth = 2500
maxdepth = 50000
minlon = 126
latlon = LatLonPrior(self.fault, depth_mu, depth_std, mindepth,
maxdepth)
mag = stats.truncexpon(b=3, loc=6.5)
deltalogl = stats.norm(
scale=0.18842320591492676) # sample standard deviation from data
deltalogw = stats.norm(
scale=0.17186788334444705) # sample standard deviation from data
deltadepth = stats.norm(
scale=5) # in km to avoid numerically singular covariance matrix
return Prior(latlon, mag, deltalogl, deltalogw, deltadepth)
def get_switching_points(self, nswitches, switch_frequency):
b = 10 * switch_frequency
s = switch_frequency
l = 0.1 * switch_frequency
switches = np.rint(
stats.truncexpon(b, scale=s, loc=l).rvs(int(nswitches)))
switches = np.maximum(1, switches)
return switches.astype(np.int)
def __init__(self, lambd, trunc=1):
self.lambd = lambd
self.trunc = trunc
if trunc:
self.rv = truncexpon(trunc, scale=1 / lambd)
self.expectation = self.rv.mean()
else:
self.expectation = 1. / lambd
def sigma_gen(self):
loc, scale = 10., 350.
trunc_abs = 350.
pdf_sigma = stats.truncexpon(b=((scale - loc) / trunc_abs),
loc=loc,
scale=scale)
pdf_sigma.random_state = self.RS
if 'sigma' in self.override:
self.FSPS_args.update({'sigma': self.override['sigma']})
elif 'sigma' in self.subsample_keys:
self.FSPS_args.update(
{'sigma': pdf_sigma.rvs(size=self.Nsubsample)})
else:
self.FSPS_args.update({'sigma': pdf_sigma.rvs()})
def do_trial(subj: Model, sample_interval: float) -> float:
"""This function takes a subject and an interval time, and goes through
the process of an experiment trial.
Args:
subj (Model): The subject which will do the trial.
sample_interval (float): The interval time defining the trial.
Returns:
float: The (re)production time.
"""
# "Trials began with the presentation of a central fixation point for 1s,"
subj.time += 1
# "followed by the presentation of a warning stimulus ..."
# "After a variable delay ranging from 0.25-0.85s drawn randomly from a
# truncated exponential distribution, ..."
subj.time += truncexpon(0.6, 0.25).rvs(1, random_state=rng)[0]
# "two 100ms flashes separated by the sample interval were presented."
subj.time += 0.1 # READY
subj.time += sample_interval
# convert time to pulses and remember how many it took
pulses = time_to_pulses(sample_interval)
subj.add_encounter(
Chunk(name=f'pf_{pulses}',
slots={
'isa': 'pulse-fact',
'pulses': pulses
}))
# "Production times, t_p, were measured from the center of the flash, (that
# is, 50ms after its onset) to when the key was pressed"
subj.time += 0.05 # SET
# retrieve the most activated memory
request = Chunk(name='pulse-request', slots={'isa': 'pulse-fact'})
chunk, latency = subj.retrieve(request)
subj.add_encounter(chunk)
subj.time += latency
# convert pulse to time, then add and return the production time
production_time = pulses_to_time(chunk.slots['pulses'])
subj.time += production_time # GO
return production_time
def generate_data(L,N):
# L : time steps
# N : number of nodes
w_true = np.random.normal(0, 1., (N,N))
x_min, x_max = -1., 1.
x = np.zeros([L,N])
x[0,:] = np.random.rand(1,N) #Initial values of x_i(0)
#Generating sequences of x_i(t+1)
for t in range(L-1):
h = x[t,:].dot(w_true)
for i in range(N):
if h[i] != 0.:
x_scale = 1./np.abs(h[i])
sampling = stats.truncexpon(b=(x_max-x_min)/x_scale, loc=x_min, scale=x_scale)
#truncated exponential dist exp(x h[i]) for x ~ [-1, 1]
sample = sampling.rvs(1) #obtain 1 samples
x[t+1, i] = -np.sign(h[i])*sample[0]
else:
x[t+1,i] = random.uniform(x_min, x_max)
return w_true,x
def __init__(self, cdts, Rcut, hyp, Dist, centre_init):
"""
Constructor of the logposteriorModule
"""
rad, thet = Deg2pc(cdts, centre_init, Dist)
c, r, t, self.Rmax = TruncSort(cdts, rad, thet, Rcut)
self.pro = c[:, 2]
self.cdts = c[:, :2]
self.Dist = Dist
print "There are ", len(self.cdts), " observations."
# sys.exit()
#------------- poisson ----------------
self.quadrants = [
0, np.pi / 2.0, np.pi, 3.0 * np.pi / 2.0, 2.0 * np.pi
]
self.poisson = st.poisson(len(r) / 4.0)
#-------------- priors ----------------
self.Prior_0 = st.norm(loc=centre_init[0], scale=hyp[0])
self.Prior_1 = st.norm(loc=centre_init[1], scale=hyp[1])
self.Prior_2 = st.halfcauchy(loc=0.01, scale=hyp[2])
self.Prior_3 = st.truncexpon(b=hyp[3], loc=2.01, scale=hyp[4])
print "Module Initialized"
def setup(config):
"""Extracts the data from the config object to create the SulawesiFault
object, and then declares the scenario's initial prior, forward model, and
covariance in order to create the SulawesiScenario.
Parameters
----------
config : Config object
The config object that contains the default scenario data to use for
the sampling. Essentially, this sets all the initial conditions for the
bounds, prior, fault, etc.
Returns
-------
BandaScenario : BandaScenario object
"""
#Flores and Walanae fault objects
with open(config.fault['walanae_data_path'], 'rb') as file:
walanae_initialization_data = pickle.load(file)
fault_initialization_data = [
np.load(config.fault['flores_data_path']), walanae_initialization_data
]
geoclaw_bounds = config.geoclaw_bounds
bounds = [config.model_bounds_flo, config.model_bounds_wal]
# Initialize the kernel for the Gaussian process fault. Strike, dip and
# depth will use the same kernel (the RBF kernel).
flores_kernel = lambda x, y: GPR.rbf_kernel(x, y, sig=0.75)
fault = [
tb.fault.GaussianProcessFault( # Flores uses a GaussianProcessFault
bounds=geoclaw_bounds,
model_bounds=bounds[FAULT.FLORES],
kers={
'depth': flores_kernel,
'dip': flores_kernel,
'strike': flores_kernel,
'rake': flores_kernel
},
noise={'depth': 1, 'dip': 1, 'strike': 1, 'rake': 1},
**fault_initialization_data[FAULT.FLORES]
),
tb.fault.ReferenceCurveFault( # Walanae uses a ReferenceCurveFault
bounds=geoclaw_bounds,
model_bounds=bounds[FAULT.WALANAE],
**fault_initialization_data[FAULT.WALANAE]
)
]
# Priors
# latitude/longitude
depth_mu = [config.prior['depth_mu_flo'], config.prior['depth_mu_wal']]
depth_std = [config.prior['depth_std_flo'], config.prior['depth_std_wal']]
mindepth = [config.prior['mindepth_flo'], config.prior['mindepth_wal']]
maxdepth = [config.prior['maxdepth_flo'], config.prior['maxdepth_wal']]
lower_bound_depth = [
(md - dmu) / dstd
for md, dmu, dstd in zip(mindepth, depth_mu, depth_std)
]
upper_bound_depth = [
(md - dmu) / dstd
for md, dmu, dstd in zip(maxdepth, depth_mu, depth_std)
]
depth_dist = [
stats.truncnorm(lb, ub, loc=dmu, scale=dstd) for lb, ub, dmu, dstd in
zip(lower_bound_depth, upper_bound_depth, depth_mu, depth_std)
]
latlon = [
LatLonPrior(fault[FAULT.FLORES], depth_dist[FAULT.FLORES]),
LatLonPrior(fault[FAULT.WALANAE], depth_dist[FAULT.WALANAE])
]
# magnitude
mag = [
stats.truncexpon(b=config.prior['mag_b_flo'],
loc=config.prior['mag_loc_flo'],
scale=config.prior['mag_scale_flo']),
stats.truncexpon(b=config.prior['mag_b_wal'],
loc=config.prior['mag_loc_wal'],
scale=config.prior['mag_scale_wal'])
]
# delta_logl
# sample standard deviation from data
delta_logl = [
stats.norm(scale=config.prior['delta_logl_std_flo']),
stats.norm(scale=config.prior['delta_logl_std_wal'])
]
# delta_logw
# sample standard deviation from data
delta_logw = [
stats.norm(scale=config.prior['delta_logw_std_flo']),
stats.norm(scale=config.prior['delta_logw_std_wal'])
]
# depth offset in km to avoid numerically singular covariance matrix
depth_offset = [
stats.norm(scale=config.prior['depth_offset_std_flo']),
stats.norm(scale=config.prior['depth_offset_std_wal'])
]
dip_offset = [
stats.norm(scale=config.prior['dip_offset_std_flo']),
stats.norm(scale=config.prior['dip_offset_std_wal'])
]
strike_offset = [
stats.norm(scale=config.prior['strike_offset_std_flo']),
stats.norm(scale=config.prior['strike_offset_std_wal'])
]
rake_offset = [
stats.norm(scale=config.prior['rake_offset_std_flo']),
stats.norm(scale=config.prior['rake_offset_std_wal'])
]
prior = [
SulawesiPrior(latlon[FAULT.FLORES], mag[FAULT.FLORES],
delta_logl[FAULT.FLORES], delta_logw[FAULT.FLORES],
depth_offset[FAULT.FLORES], dip_offset[FAULT.FLORES],
strike_offset[FAULT.FLORES], rake_offset[FAULT.FLORES]),
SulawesiPrior(latlon[FAULT.WALANAE], mag[FAULT.WALANAE],
delta_logl[FAULT.WALANAE], delta_logw[FAULT.WALANAE],
depth_offset[FAULT.WALANAE], dip_offset[FAULT.WALANAE],
strike_offset[FAULT.WALANAE], rake_offset[FAULT.WALANAE])
]
# load gauges
gauges = build_gauges()
# Forward model
config.fgmax['min_level_check'] = (
len(config.geoclaw['refinement_ratios']) + 1)
forward_model = [
tb.GeoClawForwardModel(gauges, fault[FAULT.FLORES], config.fgmax,
config.geoclaw['dtopo_path']),
tb.GeoClawForwardModel(gauges, fault[FAULT.WALANAE], config.fgmax,
config.geoclaw['dtopo_path'])
]
# Proposal kernel
lat_std = [
config.proposal_kernel['lat_std_flo'],
config.proposal_kernel['lat_std_wal']
]
lon_std = [
config.proposal_kernel['lon_std_flo'],
config.proposal_kernel['lon_std_wal']
]
mag_std = [
config.proposal_kernel['mag_std_flo'],
config.proposal_kernel['mag_std_wal']
]
delta_logl_std = [
config.proposal_kernel['delta_logl_std_flo'],
config.proposal_kernel['delta_logl_std_wal']
]
delta_logw_std = [
config.proposal_kernel['delta_logw_std_flo'],
config.proposal_kernel['delta_logw_std_wal']
]
# in km to avoid singular covariance matrix
depth_offset_std = [
config.proposal_kernel['depth_offset_std_flo'],
config.proposal_kernel['depth_offset_std_wal']
]
dip_offset_std = [
config.proposal_kernel['dip_offset_std_flo'],
config.proposal_kernel['dip_offset_std_wal']
]
strike_offset_std = [
config.proposal_kernel['strike_offset_std_flo'],
config.proposal_kernel['strike_offset_std_wal']
]
rake_offset_std = [
config.proposal_kernel['rake_offset_std_flo'],
config.proposal_kernel['rake_offset_std_wal']
]
# square for std => cov
covariance = [
np.diag(
np.square([
lat_std[FAULT.FLORES], lon_std[FAULT.FLORES],
mag_std[FAULT.FLORES], delta_logl_std[FAULT.FLORES],
delta_logw_std[FAULT.FLORES], depth_offset_std[FAULT.FLORES],
dip_offset_std[FAULT.FLORES], strike_offset_std[FAULT.FLORES],
rake_offset_std[FAULT.FLORES]
])),
np.diag(
np.square([
lat_std[FAULT.WALANAE], lon_std[FAULT.WALANAE],
mag_std[FAULT.WALANAE], delta_logl_std[FAULT.WALANAE],
delta_logw_std[FAULT.WALANAE], depth_offset_std[FAULT.WALANAE],
dip_offset_std[FAULT.WALANAE],
strike_offset_std[FAULT.WALANAE],
rake_offset_std[FAULT.WALANAE]
]))
]
scenarios = [
SulawesiScenario(prior[FAULT.FLORES], forward_model[FAULT.FLORES],
covariance[FAULT.FLORES]),
SulawesiScenario(prior[FAULT.WALANAE], forward_model[FAULT.WALANAE],
covariance[FAULT.WALANAE])
]
return MultiFaultScenario(scenarios)
def random_trunc_exp(self, N, lower, upper, scale):
'''Draws N random values from the truncated exponential distribution.'''
b = (upper - lower) / scale
return stats.truncexpon(b, loc=lower,
scale=scale).rvs(N, random_state=self.random)
delay = s.get_delay()
rttresult['value'][:,x][np.logical_and(rttresult['scheme'] == 'del', rttresult['mean'] == value[0])] = delay
s.join()
break
#+++++++++++++++++++++RTT (exponential)++++++++++++++++++++++++++++++++++++++++++
for x in range(repetitions):
print(x)
for value in means:
lower, upper = 1, 1000
mu, sigma = value[0], value[1]
scale = mu
E = stats.truncexpon(loc = lower, b = (upper-lower) / scale , scale = scale)
rtt = E.rvs(size=1000)
#++++++++++++++++++++++Sequential++++++++++++++++++++++++++++++
clientq = queue.Queue()
serverq = queue.Queue()
ackq = queue.Queue()
s = Server(4, ackq, clientq, serverq, "receive" , "sequential" , rtt, 10)
c = Client(4, ackq, clientq, serverq, "send", "sequential")
s.setName("Server")
c.setName("Client")
s.start()
c.start()
c.join()
b = 4.69 mean, var, skew, kurt = truncexpon.stats(b, moments='mvsk') # Display the probability density function (``pdf``): x = np.linspace(truncexpon.ppf(0.01, b), truncexpon.ppf(0.99, b), 100) ax.plot(x, truncexpon.pdf(x, b), 'r-', lw=5, alpha=0.6, label='truncexpon pdf') # Alternatively, the distribution object can be called (as a function) # to fix the shape, location and scale parameters. This returns a "frozen" # RV object holding the given parameters fixed. # Freeze the distribution and display the frozen ``pdf``: rv = truncexpon(b) ax.plot(x, rv.pdf(x), 'k-', lw=2, label='frozen pdf') # Check accuracy of ``cdf`` and ``ppf``: vals = truncexpon.ppf([0.001, 0.5, 0.999], b) np.allclose([0.001, 0.5, 0.999], truncexpon.cdf(vals, b)) # True # Generate random numbers: r = truncexpon.rvs(b, size=1000) # And compare the histogram: ax.hist(r, normed=True, histtype='stepfilled', alpha=0.2)
def all_dists():
# dists param were taken from scipy.stats official
# documentaion examples
# Total - 89
return {
"alpha":
stats.alpha(a=3.57, loc=0.0, scale=1.0),
"anglit":
stats.anglit(loc=0.0, scale=1.0),
"arcsine":
stats.arcsine(loc=0.0, scale=1.0),
"beta":
stats.beta(a=2.31, b=0.627, loc=0.0, scale=1.0),
"betaprime":
stats.betaprime(a=5, b=6, loc=0.0, scale=1.0),
"bradford":
stats.bradford(c=0.299, loc=0.0, scale=1.0),
"burr":
stats.burr(c=10.5, d=4.3, loc=0.0, scale=1.0),
"cauchy":
stats.cauchy(loc=0.0, scale=1.0),
"chi":
stats.chi(df=78, loc=0.0, scale=1.0),
"chi2":
stats.chi2(df=55, loc=0.0, scale=1.0),
"cosine":
stats.cosine(loc=0.0, scale=1.0),
"dgamma":
stats.dgamma(a=1.1, loc=0.0, scale=1.0),
"dweibull":
stats.dweibull(c=2.07, loc=0.0, scale=1.0),
"erlang":
stats.erlang(a=2, loc=0.0, scale=1.0),
"expon":
stats.expon(loc=0.0, scale=1.0),
"exponnorm":
stats.exponnorm(K=1.5, loc=0.0, scale=1.0),
"exponweib":
stats.exponweib(a=2.89, c=1.95, loc=0.0, scale=1.0),
"exponpow":
stats.exponpow(b=2.7, loc=0.0, scale=1.0),
"f":
stats.f(dfn=29, dfd=18, loc=0.0, scale=1.0),
"fatiguelife":
stats.fatiguelife(c=29, loc=0.0, scale=1.0),
"fisk":
stats.fisk(c=3.09, loc=0.0, scale=1.0),
"foldcauchy":
stats.foldcauchy(c=4.72, loc=0.0, scale=1.0),
"foldnorm":
stats.foldnorm(c=1.95, loc=0.0, scale=1.0),
# "frechet_r": stats.frechet_r(c=1.89, loc=0.0, scale=1.0),
# "frechet_l": stats.frechet_l(c=3.63, loc=0.0, scale=1.0),
"genlogistic":
stats.genlogistic(c=0.412, loc=0.0, scale=1.0),
"genpareto":
stats.genpareto(c=0.1, loc=0.0, scale=1.0),
"gennorm":
stats.gennorm(beta=1.3, loc=0.0, scale=1.0),
"genexpon":
stats.genexpon(a=9.13, b=16.2, c=3.28, loc=0.0, scale=1.0),
"genextreme":
stats.genextreme(c=-0.1, loc=0.0, scale=1.0),
"gausshyper":
stats.gausshyper(a=13.8, b=3.12, c=2.51, z=5.18, loc=0.0, scale=1.0),
"gamma":
stats.gamma(a=1.99, loc=0.0, scale=1.0),
"gengamma":
stats.gengamma(a=4.42, c=-3.12, loc=0.0, scale=1.0),
"genhalflogistic":
stats.genhalflogistic(c=0.773, loc=0.0, scale=1.0),
"gilbrat":
stats.gilbrat(loc=0.0, scale=1.0),
"gompertz":
stats.gompertz(c=0.947, loc=0.0, scale=1.0),
"gumbel_r":
stats.gumbel_r(loc=0.0, scale=1.0),
"gumbel_l":
stats.gumbel_l(loc=0.0, scale=1.0),
"halfcauchy":
stats.halfcauchy(loc=0.0, scale=1.0),
"halflogistic":
stats.halflogistic(loc=0.0, scale=1.0),
"halfnorm":
stats.halfnorm(loc=0.0, scale=1.0),
"halfgennorm":
stats.halfgennorm(beta=0.675, loc=0.0, scale=1.0),
"hypsecant":
stats.hypsecant(loc=0.0, scale=1.0),
"invgamma":
stats.invgamma(a=4.07, loc=0.0, scale=1.0),
"invgauss":
stats.invgauss(mu=0.145, loc=0.0, scale=1.0),
"invweibull":
stats.invweibull(c=10.6, loc=0.0, scale=1.0),
"johnsonsb":
stats.johnsonsb(a=4.32, b=3.18, loc=0.0, scale=1.0),
"johnsonsu":
stats.johnsonsu(a=2.55, b=2.25, loc=0.0, scale=1.0),
"ksone":
stats.ksone(n=1e03, loc=0.0, scale=1.0),
"kstwobign":
stats.kstwobign(loc=0.0, scale=1.0),
"laplace":
stats.laplace(loc=0.0, scale=1.0),
"levy":
stats.levy(loc=0.0, scale=1.0),
"levy_l":
stats.levy_l(loc=0.0, scale=1.0),
"levy_stable":
stats.levy_stable(alpha=0.357, beta=-0.675, loc=0.0, scale=1.0),
"logistic":
stats.logistic(loc=0.0, scale=1.0),
"loggamma":
stats.loggamma(c=0.414, loc=0.0, scale=1.0),
"loglaplace":
stats.loglaplace(c=3.25, loc=0.0, scale=1.0),
"lognorm":
stats.lognorm(s=0.954, loc=0.0, scale=1.0),
"lomax":
stats.lomax(c=1.88, loc=0.0, scale=1.0),
"maxwell":
stats.maxwell(loc=0.0, scale=1.0),
"mielke":
stats.mielke(k=10.4, s=3.6, loc=0.0, scale=1.0),
"nakagami":
stats.nakagami(nu=4.97, loc=0.0, scale=1.0),
"ncx2":
stats.ncx2(df=21, nc=1.06, loc=0.0, scale=1.0),
"ncf":
stats.ncf(dfn=27, dfd=27, nc=0.416, loc=0.0, scale=1.0),
"nct":
stats.nct(df=14, nc=0.24, loc=0.0, scale=1.0),
"norm":
stats.norm(loc=0.0, scale=1.0),
"pareto":
stats.pareto(b=2.62, loc=0.0, scale=1.0),
"pearson3":
stats.pearson3(skew=0.1, loc=0.0, scale=1.0),
"powerlaw":
stats.powerlaw(a=1.66, loc=0.0, scale=1.0),
"powerlognorm":
stats.powerlognorm(c=2.14, s=0.446, loc=0.0, scale=1.0),
"powernorm":
stats.powernorm(c=4.45, loc=0.0, scale=1.0),
"rdist":
stats.rdist(c=0.9, loc=0.0, scale=1.0),
"reciprocal":
stats.reciprocal(a=0.00623, b=1.01, loc=0.0, scale=1.0),
"rayleigh":
stats.rayleigh(loc=0.0, scale=1.0),
"rice":
stats.rice(b=0.775, loc=0.0, scale=1.0),
"recipinvgauss":
stats.recipinvgauss(mu=0.63, loc=0.0, scale=1.0),
"semicircular":
stats.semicircular(loc=0.0, scale=1.0),
"t":
stats.t(df=2.74, loc=0.0, scale=1.0),
"triang":
stats.triang(c=0.158, loc=0.0, scale=1.0),
"truncexpon":
stats.truncexpon(b=4.69, loc=0.0, scale=1.0),
"truncnorm":
stats.truncnorm(a=0.1, b=2, loc=0.0, scale=1.0),
"tukeylambda":
stats.tukeylambda(lam=3.13, loc=0.0, scale=1.0),
"uniform":
stats.uniform(loc=0.0, scale=1.0),
"vonmises":
stats.vonmises(kappa=3.99, loc=0.0, scale=1.0),
"vonmises_line":
stats.vonmises_line(kappa=3.99, loc=0.0, scale=1.0),
"wald":
stats.wald(loc=0.0, scale=1.0),
"weibull_min":
stats.weibull_min(c=1.79, loc=0.0, scale=1.0),
"weibull_max":
stats.weibull_max(c=2.87, loc=0.0, scale=1.0),
"wrapcauchy":
stats.wrapcauchy(c=0.0311, loc=0.0, scale=1.0),
}
import numpy as np
import scipy.stats as ss
class Timer:
def __enter__(self):
self.start = time.perf_counter()
return self
def __exit__(self, *args):
self.end = time.perf_counter()
self.interval = self.end - self.start
standard_normal = ss.norm(loc=0, scale=1)
truncated_exponential = ss.truncexpon(b=np.inf, loc=4.5, scale=1)
for N in np.logspace(4, 8, base=10, num=5, dtype=np.int):
# estimator (3)
with Timer() as t1:
y = standard_normal.rvs(size=N)
estimator_1 = np.mean(y > 4.5)
# estimator (4)
with Timer() as t2:
x = truncated_exponential.rvs(size=N)
f = standard_normal.pdf(x)
g = truncated_exponential.pdf(x)
estimator_2 = np.mean(f / g)
print(f"N = {N}")
def rtexp(ntrials, lam, lower, upper, seed):
a = float(lower)
b = float(upper)
x = lam
smp = stats.truncexpon((b - a) / x, loc=a, scale=x).rvs(ntrials)
return smp
def difexp(lam, lower, upper, mean):
diff = stats.truncexpon((float(upper) - float(lower)) / float(lam),
loc=float(lower),
scale=float(lam)).mean() - float(mean)
return abs(diff)
def setup(config):
"""Extracts the data from the config object to create the BandaFault object,
and then declares the scenario's initial prior, forward model, and covariance
in order to create the BandaScenario.
Parameters
----------
config : Config object
The config object that contains the default scenario data to use for the sampling.
Essentially, this sets all the initial conditions for the bounds, prior, fault, etc.
Returns
-------
BandaScenario : BandaScenario object
"""
# Banda Arc fault object
arrays = np.load(config.fault['grid_data_path'])
fault = tb.GridFault(bounds=config.model_bounds, **arrays)
# Priors
# latitude/longitude
depth_mu = config.prior['depth_mu']
depth_std = config.prior['depth_std']
mindepth = config.prior['mindepth']
maxdepth = config.prior['maxdepth']
a, b = (mindepth - depth_mu) / depth_std, (maxdepth - depth_mu) / depth_std
depth_dist = stats.truncnorm(a, b, loc=depth_mu, scale=depth_std)
latlon = LatLonPrior(fault, depth_dist)
# magnitude
mag = stats.truncexpon(b=config.prior['mag_b'],
loc=config.prior['mag_loc'])
# delta_logl
delta_logl = stats.norm(scale=config.prior['delta_logl_std']
) # sample standard deviation from data
# delta_logw
delta_logw = stats.norm(scale=config.prior['delta_logw_std']
) # sample standard deviation from data
# depth offset
depth_offset = stats.norm(
scale=config.prior['depth_offset_std']
) # in km to avoid numerically singular covariance matrix
prior = BandaPrior(latlon, mag, delta_logl, delta_logw, depth_offset)
# load gauges
gauges = build_gauges()
# Forward model
config.fgmax['min_level_check'] = len(
config.geoclaw['refinement_ratios']) + 1
forward_model = tb.GeoClawForwardModel(gauges, fault, config.fgmax,
config.geoclaw['dtopo_path'])
# Proposal kernel
lat_std = config.proposal_kernel['lat_std']
lon_std = config.proposal_kernel['lon_std']
mag_std = config.proposal_kernel['mag_std']
delta_logl_std = config.proposal_kernel['delta_logl_std']
delta_logw_std = config.proposal_kernel['delta_logw_std']
depth_offset_std = config.proposal_kernel[
'depth_offset_std'] #in km to avoid singular covariance matrix
# square for std => cov
covariance = np.diag(
np.square([
lat_std, lon_std, mag_std, delta_logl_std, delta_logw_std,
depth_offset_std
]))
return BandaScenario(prior, forward_model, covariance)
def get_truncated_expon(scale=100, low=0, upp=1000):
return truncexpon(b=(upp - low) / scale, loc=low, scale=scale)
Marton's methods makes more sense if the point to keep hazard function as flat as possible. @author: Han """ import scipy.stats as stats import matplotlib.pyplot as plt import numpy as np lower, upper, scale = 0.5, 3, 1 # Delay # lower, upper, scale = 1.5, 10, 3 # ITI # lower, upper, scale = 50, 150, 30 # block n = 10000 # Real truncated exponential X = stats.truncexpon(b=(upper - lower) / scale, loc=lower, scale=scale) truncexp = X.rvs(n) # Old method truncexp_old = np.random.exponential(scale, n) + lower truncexp_old[truncexp_old > upper] = upper # Plotting fig = plt.figure(1) fig.clf() # Trunc exp ax = fig.subplots(2, 2) truncexp_hist, xx, _ = ax[0, 0].hist(truncexp, 100, density=True) truncexp_hazard = truncexp_hist / np.flip(np.flip(truncexp_hist).cumsum()) ax[0, 0].set(title='TruncExp (scipy)', ylim=(0, max(truncexp_hist) * 1.5))
def _rtexp(ntrials, lam, lower, upper, seed):
a = float(lower)
b = float(upper)
np.random.seed(seed)
smp = stats.truncexpon((b - a) / lam, loc=a, scale=lam).rvs(ntrials)
return smp
def list_of_force_angle_lists(num_forces, num_mags, num_angles_tang,
num_angles_inner, f_lower_bound, f_upper_bound,
delta_angle_inner):
'''
This function generates force lists.
At most it will generate num_mags * num_angles_tang * num_angles_inner * num_random
force lists.
The process works as follows:
1. The magnitude value are sampled from the truncated exponential distribution (truncated to lower and upper bounds)
2. Then the following process is repeated num_angles_tang times:
i. (num_forces - 1) forces are generated sequentially:
a. The magnitude comes from a random normal distribution with mean = mag
and std. dev = mag / 5
b. The tangential component is generated by random normal with mean =
0 and std.dev = pi/12, which is to ensure that the tangential anle is mostly
within pi/4 and -pi/4
c. The interval [0, 2*pi] is divided into num_forces equal sub-intervals,
such that these sub-intervals are delta_angle_inner apart. The position angle for each
of the forces is drawn from uniform distribition over the correspodning
sub-interval.
ii. The last force is calculated to ensure that the balance equations are satisfied
iii. The forces are checked again to ensure that they are at least delta_angle_inner apart
and each has the tangential component within -pi/4 to pi/4. This is necessary as
the last force may have changed this.
iv. If the conditions are satisfied then we have a ready-to-go force list. We
repetitively (num_angles_inner times) add this force list to the final list of force lists as follows:
a. At each step, we shift all of the position angles by random angle (picked uniformly from [0, 2 pi]).
b. We attach the resulting force list to the final list of force lists.
In total, at most (num_angles_inner * num_angles_tang * num_mags) force lists corresponding to
(physically feasible) particles are generated. The number of force lists may be smaller if at some iteration of the loops,
we cannot generate physically feasible list for more than max_attempts = 10^6 attempts.
'''
# Initialize variables
list_of_F_lists = []
phi_init = 0 # phi_init is defined to help produce the sub-intervals for position angles from the interval
delta = delta_angle_inner / 2 # delta serves to ensure that the sub-inrervals for position angles are pi/6 apart
shift = 2 * pi / num_forces # shift is defined to produce the sub-intervals for position angles from the interval [0,2*pi]
alpha_init = 0 # alpha_init and alpha_std_dev are parameters for the random normal distribution to produce tangential angles
alpha_std_dev = pi / 12 # the std. dev was chosen so that alpha mostly stays within -pi/4 to pi/4
max_attempts = 10**6 # max_attempts is defined to limit the number of attempts to produce a force list given a starting magnitude
# draw mean force
scale = 1 / 2
rv = truncexpon(b=(f_upper_bound - f_lower_bound) / scale,
loc=f_lower_bound,
scale=scale)
mags = rv.rvs(num_mags)
for mag in mags:
for i in range(num_angles_tang):
# count attempts made to generate new force list
attempt_count = 0
while attempt_count < max_attempts:
F_list = []
for j in range(num_forces - 1):
# generate (num_forces - 1) forces acting on particle
f_mag = abs(np.random.normal(mag, mag / 5))
f_phi = np.random.uniform(
phi_init + j * shift + delta, phi_init +
(j + 1) * shift - delta) % (2 * pi)
f_alpha = np.random.normal(alpha_init, alpha_std_dev)
F_list.append(Force(f_mag, f_phi, f_alpha))
# calculate last force to balance the rest
f_last = calculate_last_force(F_list)
F_list.append(f_last)
# check that the generated forces are physically feasible
check = [
calculate_conv_angle((f_last.get_phi() - f.get_phi()) %
(2 * pi)) >= delta_angle_inner
for f in F_list[:-1]
]
check += [(f.get_alpha() <= pi / 4
and f.get_alpha() >= -pi / 4) for f in F_list]
check += [(f.get_mag() >= 0) for f in F_list]
attempt_count += 1
if all(check):
for ang_inner in range(num_angles_inner):
# add num_angles_inner rotations
rand_ang = np.random.uniform(0, 2 * pi)
F_list_new = [
Force(f.get_mag(),
(f.get_phi() + rand_ang) % (2 * pi),
f.get_alpha()) for f in F_list
]
list_of_F_lists.append(F_list_new)
attempt_count = max_attempts
return list_of_F_lists
def truncexponential_sampling_fn(n, shift=0., scale=1., truncation=3.):
return truncexpon(truncation/scale, shift, scale).rvs(n)
