def test_slice_theta_irm():
N = 10
defn = model_definition([N], [((0, 0), bbnc)])
data = np.random.random(size=(N, N)) < 0.8
view = numpy_dataview(data)
r = rng()
prior = {'alpha': 1.0, 'beta': 9.0}
s = initialize(
defn,
[view],
r=r,
cluster_hps=[{'alpha': 2.0}],
relation_hps=[prior],
domain_assignments=[[0] * N])
bs = bind(s, 0, [view])
params = {0: {'p': 0.05}}
heads = len([1 for y in data.flatten() if y])
tails = len([1 for y in data.flatten() if not y])
alpha1 = prior['alpha'] + heads
beta1 = prior['beta'] + tails
def sample_fn():
theta(bs, r, tparams=params)
return s.get_suffstats(0, [0, 0])['p']
rv = beta(alpha1, beta1)
assert_1d_cont_dist_approx_sps(sample_fn, rv, nsamples=50000)
def latent(groups, entities_per_group, features, r):
N = groups * entities_per_group
defn = model_definition([N], [((0, 0), bb)] * features)
# generate fake data
views = []
for i in xrange(features):
Y = np.random.random(size=(N, N)) <= 0.5
view = numpy_dataview(Y)
views.append(view)
# assign entities to their respective groups
assignment = [[g] * entities_per_group for g in xrange(groups)]
assignment = list(it.chain.from_iterable(assignment))
latent = bind(initialize(defn, views, r, domain_assignments=[assignment]),
0, views)
latent.create_group(r) # perftest() doesnt modify group assignments
return latent
def latent(groups, entities_per_group, features, r):
N = groups * entities_per_group
defn = model_definition([N], [((0, 0), bb)] * features)
# generate fake data
views = []
for i in xrange(features):
Y = np.random.random(size=(N, N)) <= 0.5
view = numpy_dataview(Y)
views.append(view)
# assign entities to their respective groups
assignment = [[g] * entities_per_group for g in xrange(groups)]
assignment = list(it.chain.from_iterable(assignment))
latent = bind(
initialize(defn, views, r, domain_assignments=[assignment]), 0, views)
latent.create_group(r) # perftest() doesnt modify group assignments
return latent
# 3. initialize the model
# 4. define the runners (MCMC chains)
# 5. run the runners
# In[5]:
from microscopes.common.rng import rng
from microscopes.common.relation.dataview import numpy_dataview
from microscopes.models import bb as beta_bernoulli
from microscopes.irm.definition import model_definition
from microscopes.irm import model, runner, query
from microscopes.kernels import parallel
from microscopes.common.query import groups, zmatrix_heuristic_block_ordering, zmatrix_reorder
defn = model_definition([N], [((0, 0), beta_bernoulli)])
views = [numpy_dataview(communications_relation)]
prng = rng()
nchains = 1
latents = [model.initialize(defn, views, r=prng, cluster_hps=[{'alpha':1}]) for _ in xrange(nchains)]
kc = runner.default_assign_kernel_config(defn)
print kc
r = runner.runner(defn, views, latents[0], kc)
# ##From here, we can finally run each chain of the sampler 1000 times
# In[ ]:
start = time.time()
print start
def infinite_relational_model(corr_matrix, lag_matrix, threshold, sampled_coords, window_size):
import numpy as np
import math
import json
import time
import itertools as it
from multiprocessing import cpu_count
from microscopes.common.rng import rng
from microscopes.common.relation.dataview import numpy_dataview
from microscopes.models import bb as beta_bernoulli
from microscopes.irm.definition import model_definition
from microscopes.irm import model, runner, query
from microscopes.kernels import parallel
from microscopes.common.query import groups, zmatrix_heuristic_block_ordering, zmatrix_reorder
cluster_matrix = []
graph = []
# calculate graph
for row in corr_matrix:
graph_row = []
for corr in row:
if corr < threshold:
graph_row.append(False)
else:
graph_row.append(True)
graph.append(graph_row)
graph = np.array(graph, dtype=np.bool)
graph_size = len(graph)
# conduct Infinite Relational Model
defn = model_definition([graph_size], [((0, 0), beta_bernoulli)])
views = [numpy_dataview(graph)]
prng = rng()
nchains = cpu_count()
latents = [model.initialize(defn, views, r=prng, cluster_hps=[{'alpha':1e-3}]) for _ in xrange(nchains)]
kc = runner.default_assign_kernel_config(defn)
runners = [runner.runner(defn, views, latent, kc) for latent in latents]
r = parallel.runner(runners)
start = time.time()
# r.run(r=prng, niters=1000)
# r.run(r=prng, niters=100)
r.run(r=prng, niters=20)
print ("inference took", time.time() - start, "seconds")
infers = r.get_latents()
clusters = groups(infers[0].assignments(0), sort=True)
ordering = list(it.chain.from_iterable(clusters))
z = graph.copy()
z = z[ordering]
z = z[:,ordering]
corr_matrix = corr_matrix[ordering]
corr_matrix = corr_matrix[:,ordering]
lag_matrix = lag_matrix[ordering]
lag_matrix = lag_matrix[:,ordering]
cluster_sampled_coords = np.array(sampled_coords)
cluster_sampled_coords = cluster_sampled_coords[ordering]
response_msg = {
'corrMatrix': corr_matrix.tolist(),
'lagMatrix': lag_matrix.tolist(),
'clusterMatrix': z.tolist(),
'clusterSampledCoords': cluster_sampled_coords.tolist(),
'nClusterList': [len(cluster) for cluster in clusters],
'ordering': ordering,
}
f = open("./expdata/clustermatrix-" + str(window_size) + ".json", "w")
json.dump(response_msg, f)
f.close()
return response_msg
# In[5]:
from microscopes.common.rng import rng
from microscopes.common.relation.dataview import numpy_dataview
from microscopes.models import bb as beta_bernoulli
from microscopes.irm.definition import model_definition
from microscopes.irm import model, runner, query
from microscopes.kernels import parallel
from microscopes.common.query import groups, zmatrix_heuristic_block_ordering, zmatrix_reorder
# ##Let's start by defining the model and loading the data
# In[6]:
defn = model_definition([N], [((0, 0), beta_bernoulli)])
views = [numpy_dataview(communications_relation)]
prng = rng()
# ##Next, let's initialize the model and define the runners.
#
# ##These runners are our MCMC chains. We'll use `cpu_count` to define our number of chains.
# In[ ]:
nchains = cpu_count()
latents = [
model.initialize(defn, views, r=prng, cluster_hps=[{
'alpha': 1e-3
}]) for _ in xrange(nchains)
]
kc = runner.default_assign_kernel_config(defn)
