def main():
domain, formula, name = checker_problem()
thresholds = {v: 0.1 for v in domain.real_vars}
data = uniform(domain, 1000)
labels = evaluate(domain, formula, data)
data = data[labels == 1]
labels = labels[labels == 1]
def learn_inc(_data, _labels, _i, _k, _h):
strategy = OneClassStrategy(RandomViolationsStrategy(10), thresholds)
learner = KCnfSmtLearner(_k, _h, strategy, "mvn")
initial_indices = LearnOptions.initial_random(20)(list(
range(len(_data))))
# learner.add_observer(LoggingObserver(None, _k, _h, None, True))
learner.add_observer(
PlottingObserver(domain, "test_output/checker",
"run_{}_{}_{}".format(_i, _k,
_h), domain.real_vars[0],
domain.real_vars[1], None, False))
return learner.learn(domain, _data, _labels, initial_indices)
(new_data, new_labels,
formula), k, h = learn_bottom_up(data, labels, learn_inc, 1, 1, 1, 1,
None, None)
print("Learned CNF(k={}, h={}) formula {}".format(k, h,
pretty_print(formula)))
print("Data-set grew from {} to {} entries".format(len(labels),
len(new_labels)))
def observe_iteration(self, data, labels, formula, new_active_indices,
solving_time, selection_time):
flat = {
"type": "update",
"theory": smt_to_nested(formula),
"indices": [int(v) for v in new_active_indices],
"solving_time": solving_time,
"selection_time": selection_time,
"k": self.k,
"h": self.h,
}
if self.violation_counter is not None:
flat["violations"] = [
int(v) for v in self.violation_counter.last_violations
]
if self.verbose:
print("Found model after {:.2f}s".format(solving_time))
print(pretty_print(formula))
if self.violation_counter is not None:
violation_count = len(self.violation_counter.last_violations)
selected_count = len(new_active_indices)
print("Selected {} of {} violations in {:.2f}s".format(
selected_count, violation_count, selection_time))
self.log(flat)
def background_knowledge_example():
domain = Domain.make(["a", "b"], ["x", "y"], [(0, 1), (0, 1)])
a, b, x, y = domain.get_symbols(domain.variables)
formula = (a | b) & (~a | ~b) & (x >= 0) & (x <= y) & (y <= 1)
thresholds = {v: 0.1 for v in domain.real_vars}
data = uniform(domain, 10000)
labels = evaluate(domain, formula, data)
data = data[labels == 1]
labels = labels[labels == 1]
def learn_inc(_data, _labels, _i, _k, _h):
strategy = OneClassStrategy(
RandomViolationsStrategy(10),
thresholds) #, background_knowledge=(a | b) & (~a | ~b))
learner = KCnfSmtLearner(_k, _h, strategy, "mvn")
initial_indices = LearnOptions.initial_random(20)(list(
range(len(_data))))
# learner.add_observer(LoggingObserver(None, _k, _h, None, True))
learner.add_observer(
PlottingObserver(domain, "test_output/bg",
"run_{}_{}_{}".format(_i, _k,
_h), domain.real_vars[0],
domain.real_vars[1], None, False))
return learner.learn(domain, _data, _labels, initial_indices)
(new_data, new_labels,
formula), k, h = learn_bottom_up(data, labels, learn_inc, 1, 1, 1, 1,
None, None)
print("Learned CNF(k={}, h={}) formula {}".format(k, h,
pretty_print(formula)))
print("Data-set grew from {} to {} entries".format(len(labels),
len(new_labels)))
def negative_samples_example(background_knowledge):
domain = Domain.make(["a", "b"], ["x", "y"], [(0, 1), (0, 1)])
a, b, x, y = domain.get_symbols(domain.variables)
formula = (a | b) & (~a | ~b) & (x <= y) & domain.get_bounds()
background_knowledge = (a | b) & (~a
| ~b) if background_knowledge else None
thresholds = {"x": 0.1, "y": 0.2}
data = uniform(domain, 10000)
labels = evaluate(domain, formula, data)
data = data[labels == 1]
labels = labels[labels == 1]
original_sample_count = len(labels)
start_time = time.time()
data, labels = OneClassStrategy.add_negatives(domain, data, labels,
thresholds, 100,
background_knowledge)
print("Created {} negative examples".format(
len(labels) - original_sample_count))
directory = "test_output{}bg_sampled{}{}".format(
os.path.sep, os.path.sep, time.strftime("%Y-%m-%d %Hh%Mm%Ss"))
def learn_inc(_data, _labels, _i, _k, _h):
strategy = OneClassStrategy(RandomViolationsStrategy(10),
thresholds,
background_knowledge=background_knowledge)
learner = KCnfSmtLearner(_k, _h, strategy, "mvn")
initial_indices = LearnOptions.initial_random(20)(list(
range(len(_data))))
learner.add_observer(
PlottingObserver(domain, directory,
"run_{}_{}_{}".format(_i, _k,
_h), domain.real_vars[0],
domain.real_vars[1], None, False))
return learner.learn(domain, _data, _labels, initial_indices)
(new_data, new_labels,
learned_formula), k, h = learn_bottom_up(data, labels, learn_inc, 1, 1, 1,
1, None, None)
if background_knowledge:
learned_formula = learned_formula & background_knowledge
duration = time.time() - start_time
print("{}".format(smt_to_nested(learned_formula)))
print("Learned CNF(k={}, h={}) formula {}".format(
k, h, pretty_print(learned_formula)))
print("Data-set grew from {} to {} entries".format(len(labels),
len(new_labels)))
print("Learning took {:.2f}s".format(duration))
test_data, labels = OneClassStrategy.add_negatives(domain, data, labels,
thresholds, 1000,
background_knowledge)
assert all(evaluate(domain, learned_formula, test_data) == labels)
from inspect import signature import numpy as np from smtlearn.examples import ice_cream_problem from pywmi.plot import plot_data, plot_formula from pywmi.sample import uniform from pywmi.smt_check import evaluate import random from smtlearn.violations.core import RandomViolationsStrategy from smtlearn.k_cnf_smt_learner import KCnfSmtLearner from pywmi.smt_print import pretty_print random.seed(666) np.random.seed(666) domain, formula, name = ice_cream_problem() # plot_formula(None, domain, formula) data = uniform(domain, 100) labels = evaluate(domain, formula, data) learner = KCnfSmtLearner(3, 3, RandomViolationsStrategy(10)) initial_indices = random.sample(range(data.shape[0]), 20) learned_theory = learner.learn(domain, data, labels, initial_indices) print(pretty_print(learned_theory))
def __str__(self):
return pretty_print(self.test)
def main():
formula, k, h = LearnOptions().execute_from_command_line("Learn SMT(LRA) theories from data")
print("Learned formula (k={k}, h={h}): {f}".format(f=pretty_print(formula), k=k, h=h))
def main():
smt_lib_name = "smt-lib-benchmark"
synthetic_name = "synthetic"
parser = argparse.ArgumentParser(
description="Interface with benchmark or synthetic data for experiments"
)
parser.add_argument("source")
parser.add_argument("--sample_size", type=int, default=None)
parser.add_argument("--runs", type=int, default=None)
parser.add_argument("--input_dir", type=str, default=None)
parser.add_argument("--output_dir", type=str, default=None)
parser.add_argument("--processes", type=int, default=None)
parser.add_argument("--time_out", type=int, default=None)
task_parsers = parser.add_subparsers(dest="task")
prepare_parser = task_parsers.add_parser("prepare")
prepare_parser.add_argument("--reset_samples", type=bool, default=False)
learn_parser = task_parsers.add_parser("learn")
analyze_parser = task_parsers.add_parser("analyze")
analyze_parser.add_argument("--dirs", nargs="+", type=str)
analyze_parser.add_argument("--res_path", type=str, default=None)
show_parsers = analyze_parser.add_subparsers()
show_parser = show_parsers.add_parser("show")
show.add_arguments(show_parser)
learn_options = LearnOptions()
learn_options.add_arguments(learn_parser)
args = parser.parse_args()
if args.task == "prepare":
if args.source == smt_lib_name:
prepare_smt_lib_benchmark()
prepare_ratios()
prepare_samples(args.runs, args.sample_size, args.reset_samples)
elif args.source == synthetic_name:
prepare_synthetic(args.input_dir, args.output_dir, args.runs,
args.sample_size)
elif args.task == "learn":
learn_options.parse_arguments(args)
if args.source == smt_lib_name:
learn_benchmark(args.runs, args.sample_size, args.processes,
args.time_out, learn_options)
elif args.source == synthetic_name:
learn_synthetic(args.input_dir, args.output_dir, args.runs,
args.sample_size, args.processes, args.time_out,
learn_options)
elif args.source.startswith("ex"):
example_name = args.source.split(":", 1)[1]
domain, formula = examples.get_by_name(example_name)
np.random.seed(1)
from pywmi.sample import uniform
samples = uniform(domain, args.sample_size)
from pywmi import evaluate
labels = evaluate(domain, formula, samples)
learn_options.set_value("domain", domain, False)
learn_options.set_value("data", samples, False)
learn_options.set_value("labels", labels, False)
(formula, k, h), duration = learn_options.call(True)
print("[{:.2f}s] Learned formula (k={}, h={}): {}".format(
duration, k, h, pretty_print(formula)))
elif args.task == "analyze":
analyze(args.dirs, args.res_path, show.parse_args(args))
def parse():
parser = argparse.ArgumentParser()
parser.add_argument("file")
task_parsers = parser.add_subparsers(dest="task", help="Which task to run")
vp = task_parsers.add_parser("volume")
vp.add_argument(
"engines",
help="One or more engines (later engines are used if earlier engines fail)",
nargs="+",
)
vp.add_argument("-s", "--status", help="Print current status", action="store_true")
pp = task_parsers.add_parser("prob")
pp.add_argument(
"engines",
help="One or more engines (later engines are used if earlier engines fail)",
nargs="+",
)
pp.add_argument("-s", "--status", help="Print current status", action="store_true")
cp = task_parsers.add_parser("convert")
cp.add_argument(
"-o", "--json_file", help="The output path for the json file", default=None
)
compare_p = task_parsers.add_parser("compare")
compare_p.add_argument(
"engines", help="The engines to compare (see engine input format)", nargs="+"
)
compare_p.add_argument(
"-q", "--query_index", help="The query index to check", default=None, type=int
)
normalize_p = task_parsers.add_parser("normalize")
normalize_p.add_argument("new_support", type=str, help="The new support")
normalize_p.add_argument(
"output_path", type=str, help="Output path for normalized xadd"
)
normalize_p.add_argument(
"-t", "--total", action="store_true", help="Dump total model instead of paths"
)
plot_p = task_parsers.add_parser("plot")
plot_p.add_argument("-o", "--output", type=str, help="Output path", default=None)
plot_p.add_argument("-x", "--feat_x", type=str, help="Feature x", default=None)
plot_p.add_argument("-y", "--feat_y", type=str, help="Feature y", default=None)
plot_p.add_argument(
"-d",
"--difference",
type=str,
help="Path to density to compute difference for",
default=None,
)
print_p = task_parsers.add_parser("print")
parser.add_argument(
"-d", "--dialect", default=None, type=str, help="The dialect to use for import"
)
parser.add_argument(
"-v", "--verbose", action="store_true", help="Enable verbose output"
)
args = parser.parse_args()
density = Import.import_density(args.file, args.dialect)
domain, support, weight, queries = (
density.domain,
density.support,
density.weight,
density.queries,
)
if args.verbose:
logging.basicConfig(level=logging.INFO)
if args.task == "convert":
json_file = args.json_file
if json_file is None:
json_file = args.file + ".converted.json"
density.to_file(json_file)
elif args.task == "volume":
print(
get_volume(
[get_engine(d, domain, support, weight) for d in args.engines],
print_status=args.status,
)
)
elif args.task == "prob":
print(
get_volume(
[get_engine(d, domain, support, weight) for d in args.engines],
queries,
args.status,
)
)
elif args.task == "compare":
query = None
if args.query_index is not None and args.query_index < len(queries):
query = queries[args.query_index]
compare([get_engine(d, domain, support, weight) for d in args.engines], query)
elif args.task == "normalize":
engine = XaddEngine(domain, support, weight, "original")
new_density = Density.from_file(args.new_support) # type: Density
engine.normalize(new_density.support, not args.total)
elif args.task == "plot":
if args.output is not None and args.output == "*":
output_file = args.file + ".png"
else:
output_file = args.output
if args.difference:
other = Density.from_file(args.difference) # type: Density
difference = support & ~other.support | ~support & other.support
plot.plot_formula(
output_file, domain, difference, (args.feat_x, args.feat_y)
)
else:
plot.plot_formula(output_file, domain, support, (args.feat_x, args.feat_y))
elif args.task == "print":
print("-- Domain ---")
print(density.domain)
print("--- Support ---")
print(pretty_print(density.support))
print("--- Weight ---")
print(pretty_print(density.weight))
if len(density.queries) > 0:
print("--- Queries ---")
for query in density.queries:
print("\t", pretty_print(query))