def setup_module():
"""Run an analysis and create a database.
Called once at the beginning.
"""
def model(p):
return {
'ss0': p['p0'] + 0.1 * np.random.uniform(),
'ss1': p['p1'] + 0.1 * np.random.uniform(),
}
p_true = {'p0': 3, 'p1': 4}
observation = {'ss0': p_true['p0'], 'ss1': p_true['p1']}
limits = {'p0': (0, 5), 'p1': (1, 8)}
prior = pyabc.Distribution(
**{
key: pyabc.RV('uniform', limits[key][0], limits[key][1] -
limits[key][0])
for key in p_true.keys()
})
distance = pyabc.PNormDistance(p=2)
abc = pyabc.ABCSMC(model, prior, distance, population_size=50)
abc.new(db_path, observation)
abc.run(minimum_epsilon=0.1, max_nr_populations=4)
def setup_module():
"""Set up module. Called before all tests here."""
# create and run some model
observation = {'ss0': p_true['p0'], 'ss1': p_true['p1']}
prior = pyabc.Distribution(
**{
key: pyabc.RV('uniform', limits[key][0], limits[key][1] -
limits[key][0])
for key in p_true.keys()
})
distance = pyabc.PNormDistance(p=2)
n_history = 2
sampler = pyabc.sampler.MulticoreEvalParallelSampler(n_procs=2)
for _ in range(n_history):
abc = pyabc.ABCSMC(model,
prior,
distance,
population_size=100,
sampler=sampler)
abc.new(db_path, observation)
abc.run(minimum_epsilon=.1, max_nr_populations=3)
for j in range(n_history):
history = pyabc.History(db_path)
history.id = j + 1
histories.append(history)
labels.append("Some run " + str(j))
def test_export():
"""Test database export.
Just calls export and does some very basic checks.
"""
# simple problem
def model(p):
return {"y": p["p"] + 0.1 * np.random.normal()}
prior = pyabc.Distribution(p=pyabc.RV("uniform", -1, 2))
distance = pyabc.PNormDistance()
try:
# run
db_file = tempfile.mkstemp(suffix=".db")[1]
abc = pyabc.ABCSMC(model, prior, distance, population_size=100)
abc.new("sqlite:///" + db_file, model({"p": 0}))
abc.run(max_nr_populations=3)
# export history
for fmt in ["csv", "json", "html", "stata"]:
out_file = tempfile.mkstemp()[1]
try:
pyabc.storage.export(db_file, out=out_file, out_format=fmt)
assert os.path.exists(out_file)
assert os.stat(out_file).st_size > 0
finally:
if os.path.exists(out_file):
os.remove(out_file)
finally:
if os.path.exists(db_file):
os.remove(db_file)
def test_pipeline(db_file):
"""Test whole pipeline using a learned summary statistic."""
rng = np.random.Generator(np.random.PCG64(0))
def model(p):
return {"s0": p["p0"] + 1e-2 * rng.normal(size=2), "s1": rng.normal()}
prior = pyabc.Distribution(p0=pyabc.RV("uniform", 0, 1))
distance = pyabc.AdaptivePNormDistance(sumstat=PredictorSumstat(
LinearPredictor(), fit_ixs={1, 3}), )
data = {"s0": np.array([0.1, 0.105]), "s1": 0.5}
# run a little analysis
abc = pyabc.ABCSMC(model, prior, distance, population_size=100)
abc.new("sqlite:///" + db_file, data)
h = abc.run(max_total_nr_simulations=1000)
# first iteration
df0, w0 = h.get_distribution(t=0)
off0 = abs(pyabc.weighted_mean(df0.p0, w0) - 0.1)
# last iteration
df, w = h.get_distribution()
off = abs(pyabc.weighted_mean(df.p0, w) - 0.1)
assert off0 > off
# alternative run with simple distance
distance = pyabc.PNormDistance()
abc = pyabc.ABCSMC(model, prior, distance, population_size=100)
abc.new("sqlite:///" + db_file, data)
h = abc.run(max_total_nr_simulations=1000)
df_comp, w_comp = h.get_distribution()
off_comp = abs(pyabc.weighted_mean(df_comp.p0, w_comp) - 0.1)
assert off_comp > off
# alternative run with info weighting
distance = pyabc.InfoWeightedPNormDistance(
predictor=LinearPredictor(),
fit_info_ixs={1, 3},
)
abc = pyabc.ABCSMC(model, prior, distance, population_size=100)
abc.new("sqlite:///" + db_file, data)
h = abc.run(max_total_nr_simulations=1000)
df_info, w_info = h.get_distribution()
off_info = abs(pyabc.weighted_mean(df_info.p0, w_info) - 0.1)
assert off_comp > off_info
para_prior3 = pyabc.Distribution(
lambda_n=pyabc.RV(prior_distribution, lim.lb, lim.interval_length),
a=pyabc.RV(prior_distribution, lim.lb, lim.interval_length),
k_n_beta=pyabc.RV(prior_distribution, lim.lb, lim.interval_length),
mu_n=pyabc.RV(prior_distribution, lim.lb, lim.interval_length),
v_n_phi=pyabc.RV(prior_distribution, lim.lb, lim.interval_length),
k_phi_beta=pyabc.RV(prior_distribution, lim.lb, lim.interval_length),
mu_phi=pyabc.RV(prior_distribution, lim.lb, lim.interval_length),
s_beta_n=pyabc.RV(prior_distribution, lim.lb, lim.interval_length),
mu_beta=pyabc.RV(prior_distribution, lim.lb, lim.interval_length),
s_alpha_phi=pyabc.RV(prior_distribution, lim.lb, lim.interval_length),
mu_alpha=pyabc.RV(prior_distribution, lim.lb, lim.interval_length))
# %% Define ABC-SMC model
distanceP2 = pyabc.PNormDistance(p=2) # , factors=factors)
eps0 = pyabc.MedianEpsilon(60)
# eps_fixed = pyabc.epsilon.ListEpsilon([50, 46, 43, 40, 37, 34, 31, 29, 27, 25,
# 23, 21, 19, 17, 15, 14, 13, 12, 11, 10])
# transition0 = pyabc.transition.LocalTransition(k=50, k_fraction=None)
# sampler0 = pyabc.sampler.MulticoreEvalParallelSampler(n_procs=48)
# set model and prior
abc = pyabc.ABCSMC(
models=solver.ode_model3,
parameter_priors=para_prior3,
population_size=2000,
# sampler=sampler0,
kMB=pyabc.RV("uniform", lim2.lb, lim2.interval_length),
muM=pyabc.RV("uniform", lim2.lb, lim2.interval_length),
sBN=pyabc.RV("uniform", lim3.lb, lim3.interval_length),
iBM=pyabc.RV("uniform", lim3.lb, lim3.interval_length),
muB=pyabc.RV("uniform", lim3.lb, lim3.interval_length),
sAM=pyabc.RV("uniform", lim.lb, lim.interval_length),
muA=pyabc.RV("uniform", lim.lb, lim.interval_length)
)
# %% Define ABC-SMC model
# distanceP2_adpt = pyabc.AdaptivePNormDistance(p=2,
# scale_function=pyabc.distance.root_mean_square_deviation,
# factors=factors
# )
distanceP2 = pyabc.PNormDistance(p=2, weights=None, factors=factors)
# kernel1 = pyabc.IndependentNormalKernel(var=1.0 ** 2)
# Measure distance and set it as minimum epsilon
# min_eps = distanceP2(obs_data_noisy, obs_data_raw)
# acceptor1 = pyabc.StochasticAcceptor()
# acceptor_adpt = pyabc.UniformAcceptor(use_complete_history=True)
eps0 = pyabc.MedianEpsilon(50)
# eps1 = pyabc.Temperature()
# eps_fixed = pyabc.epsilon.ListEpsilon([50, 46, 43, 40, 37, 34, 31, 29, 27, 25,
# 23, 21, 19, 17, 15, 14, 13, 12, 11, 10])
# transition0 = pyabc.transition.LocalTransition(k=50, k_fraction=None)
# transition1 = pyabc.transition.GridSearchCV()
vNM=pyabc.RV("uniform", lim2.lb, lim2.interval_length),
lambdaM=pyabc.RV("uniform", lim3.lb, lim3.interval_length),
kMB=pyabc.RV("uniform", lim2.lb, lim2.interval_length),
muM=pyabc.RV("uniform", lim2.lb, lim2.interval_length),
sBN=pyabc.RV("uniform", lim3.lb, lim3.interval_length),
iBM=pyabc.RV("uniform", lim3.lb, lim3.interval_length),
muB=pyabc.RV("uniform", lim3.lb, lim3.interval_length),
sAM=pyabc.RV("uniform", lim.lb, lim.interval_length),
muA=pyabc.RV("uniform", lim.lb, lim.interval_length))
# %% Define ABC-SMC model
# distanceP2_adaptive = pyabc.AdaptivePNormDistance(p=2,
# scale_function=pyabc.distance.root_mean_square_deviation
# )
distanceP2 = pyabc.PNormDistance(p=2)
# kernel1 = pyabc.IndependentNormalKernel(var=1.0 ** 2)
# Measure distance and set it as minimum epsilon
min_eps = distanceP2(obs_data_noisy, obs_data_raw)
# acceptor1 = pyabc.StochasticAcceptor()
eps0 = pyabc.MedianEpsilon(50)
# eps1 = pyabc.Temperature()
# eps_fixed = pyabc.epsilon.ListEpsilon([50, 46, 43, 40, 37, 34, 31, 29, 27, 25,
# 23, 21, 19, 17, 15, 14, 13, 12, 11, 10])
transition0 = pyabc.transition.LocalTransition(k=50, k_fraction=None)
sampler0 = pyabc.sampler.MulticoreEvalParallelSampler(n_procs=48)
def get_distance(self):
"""
Distance to use for deterministic acceptance.
"""
return pyabc.PNormDistance(p=2)
def get_distance(self):
return pyabc.PNormDistance(p=2)
