def source2bags(args):
cassandra_utils.configure(args)
return repos2bow_entry_template(
args,
select=lambda: DzhigurdaFiles(args.dzhigurda),
before_deserialize=lambda: MetadataSaver(args.keyspace, args.tables[
"meta"]))
def source2bags(args):
cassandra_utils.configure(args)
return repos2bow_entry_template(
args,
select=lambda: DzhigurdaFiles(args.dzhigurda),
cache_hook=lambda: MetadataSaver(args.keyspace, args.tables["meta"]),
save_hook=lambda: BagsSaver(args.keyspace, args.tables["bags"]))
def source2bags(args):
cassandra_utils.configure(args)
return repos2bow_entry_template(
args,
select=lambda: DzhigurdaFiles(args.dzhigurda),
cache_hook=lambda: MetadataSaver(args.keyspace, args.tables["meta"]),
save_hook=lambda: BagsSaver(args.keyspace, args.tables["bags"]))
def source2bags(args):
cassandra_utils.configure(args)
if not args.skip_metadata:
cache_hook = lambda: MetadataSaver(args.keyspace, args.tables["meta"])
else:
cache_hook = None
if not args.skip_bags_to_db:
save_hook = lambda: BagsSaver(args.keyspace, args.tables["bags"])
else:
save_hook = None
return repos2bow_template(args,
select=lambda: DzhigurdaFiles(args.dzhigurda),
cache_hook=cache_hook,
save_hook=save_hook)
def source2bags(args):
log = logging.getLogger("bags")
if os.path.exists(args.batches):
log.critical("%s must not exist", args.batches)
return 1
if not args.config:
args.config = []
try:
cassandra_utils.configure(args)
engine = create_engine("source2bags-%s" % uuid4(), **args.__dict__)
extractors = [
__extractors__[s](args.min_docfreq,
**__extractors__[s].get_kwargs_fromcmdline(args))
for s in args.feature
]
pipeline = Engine(engine, explain=args.explain).link(
DzhigurdaFiles(args.dzhigurda))
uasts = pipeline.link(UastExtractor(languages=[args.language]))
if args.persist is not None:
uasts = uasts.link(Cacher(args.persist))
uasts.link(MetadataSaver(args.keyspace, args.tables["meta"]))
uasts = uasts.link(UastDeserializer())
uasts.link(Repo2Quant(extractors, args.nb_partitions))
uasts.link(Repo2DocFreq(extractors))
pipeline.explode()
bags = uasts.link(Repo2WeightedSet(extractors))
if args.persist is not None:
bags = bags.link(Cacher(args.persist))
batcher = bags.link(BagsBatcher(extractors))
batcher.link(BagsBatchSaver(args.batches, batcher))
bags.link(BagsSaver(args.keyspace, args.tables["bags"]))
bags.explode()
log.info("Writing %s", args.docfreq)
batcher.model.save(args.docfreq)
if args.graph:
log.info("Dumping the graph to %s", args.graph)
with open(args.graph, "w") as f:
pipeline.graph(stream=f)
finally:
if args.pause:
input("Press Enter to exit...")
def evaluate_communities(args):
log = logging.getLogger("evalcc")
model = CommunitiesModel().load(args.input)
configure(args)
spark = create_spark("evalcc-%s" % uuid4(),
**filter_kwargs(args.__dict__, create_spark))
log.info("Preparing the communities' RDD")
items = []
for i, c in progress_bar(enumerate(model.communities),
log,
expected_size=len(model.communities)):
for m in c:
if m < len(model.id_to_element):
items.append(Row(sha1=model.id_to_element[m], community=i))
log.info("Running")
items_in_spark = spark.sparkContext.parallelize(items).toDF()
bags = spark \
.read \
.format("org.apache.spark.sql.cassandra") \
.options(table=args.tables["bags"], keyspace=args.keyspace) \
.load()
log.info("Loaded the bags, calculating the vocabulary")
vocabulary = bags.drop(
"sha1", "value").distinct().rdd.map(lambda x: x.item).collect()
vocabulary = {v: i for i, v in enumerate(vocabulary)}
log.info("Vocabulary size: %d", len(vocabulary))
element_to_id = {e: i for i, e in enumerate(model.id_to_element)}
metrics = items_in_spark.join(bags, "sha1").rdd \
.map(lambda r: (r.community, (element_to_id[r.sha1], vocabulary[r.item], r.value))) \
.groupByKey() \
.map(CommunityEvaluator(args.threshold, len(vocabulary))) \
.reduce(lambda v1, v2: [v1[i] + v2[i] for i in range(4)])
log.info("Total misses: %d", metrics[0])
log.info("Average normalized misses: %f",
metrics[1] / len(model.communities))
log.info("Total loss: %f", metrics[2])
log.info("Average normalized loss: %f",
numpy.sqrt(metrics[3] / len(model.communities)))
def hash_batches(args):
log = logging.getLogger("hash")
log.info("Loading files from %s", args.input)
loader = BOWLoader(args.input)
log.info("%d batches", len(loader))
# Check batches
if not loader:
return
htnum, band_size = calc_hashtable_params(
args.threshold, args.size, args.false_positive_weight, args.false_negative_weight)
log.info("Number of hash tables: %d", htnum)
log.info("Band size: %d", band_size)
cassandra_utils.configure(args)
spark_args = filter_kwargs(args.__dict__, create_spark)
spark = create_spark("hash-%s" % uuid4(), **spark_args).sparkContext
import libMHCUDA # delayed import which requires CUDA and friends
tables = args.tables
gen = voc_size = None
try:
for i, bow in enumerate(loader):
if voc_size is None:
voc_size = bow.matrix.shape[-1]
log.info("Initializing the generator")
deferred = os.path.isfile(args.params)
gen = libMHCUDA.minhash_cuda_init(
voc_size, args.size, seed=args.seed, devices=args.devices,
verbosity=args.mhc_verbosity,
deferred=deferred)
if deferred:
model = WeightedMinHashParameters().load(args.params)
libMHCUDA.minhash_cuda_assign_vars(gen, model.rs, model.ln_cs, model.betas)
else:
log.info("Writing %s", args.params)
params = libMHCUDA.minhash_cuda_retrieve_vars(gen)
WeightedMinHashParameters().construct(*params).save(args.params)
if bow.matrix.shape[-1] != voc_size:
raise ValueError("The vocabulary sizes do not match: %d != %d"
% (bow.matrix.shape[-1], voc_size))
log.info("Processing batch %d / %d", i + 1, len(loader))
# Modify features if needed
# TODO(vmarkovtsev): port to the new structure
# batches = modify_feature_weights(batches, args)
hashes = libMHCUDA.minhash_cuda_calc(gen, bow.matrix)
job = [(k, h) for k, h in zip(bow.documents, hashes)]
log.info("Saving the hashtables")
df = spark.parallelize(job).flatMap(HashExploder(htnum, band_size)).toDF()
df.write \
.format("org.apache.spark.sql.cassandra") \
.mode("append") \
.options(table=tables["hashtables"], keyspace=args.keyspace) \
.save()
df.write \
.format("org.apache.spark.sql.cassandra") \
.mode("append") \
.options(table=tables["hashtables2"], keyspace=args.keyspace) \
.save()
log.info("Saving the hashes")
spark.parallelize(job) \
.map(lambda x: Row(sha1=x[0], value=bytearray(x[1].data))) \
.toDF() \
.write \
.format("org.apache.spark.sql.cassandra") \
.mode("append") \
.options(table=tables["hashes"], keyspace=args.keyspace) \
.save()
finally:
libMHCUDA.minhash_cuda_fini(gen)
def hash_batches(args):
log = logging.getLogger("hash")
log.info("Loading files from %s", args.input)
loader = BOWLoader(args.input)
log.info("%d batches", len(loader))
# Check batches
if not loader:
return
htnum, band_size = calc_hashtable_params(args.threshold, args.size,
args.false_positive_weight,
args.false_negative_weight)
log.info("Number of hash tables: %d", htnum)
log.info("Band size: %d", band_size)
cassandra_utils.configure(args)
spark = create_spark("hash-%s" % uuid4(), **args.__dict__).sparkContext
import libMHCUDA # delayed import which requires CUDA and friends
tables = args.tables
gen = voc_size = None
try:
for i, bow in enumerate(loader):
if voc_size is None:
voc_size = bow.matrix.shape[-1]
log.info("Initializing the generator")
deferred = os.path.isfile(args.params)
gen = libMHCUDA.minhash_cuda_init(voc_size,
args.size,
seed=args.seed,
devices=args.devices,
verbosity=args.mhc_verbosity,
deferred=deferred)
if deferred:
model = WeightedMinHashParameters().load(args.params)
libMHCUDA.minhash_cuda_assign_vars(gen, model.rs,
model.ln_cs,
model.betas)
else:
log.info("Writing %s", args.params)
params = libMHCUDA.minhash_cuda_retrieve_vars(gen)
WeightedMinHashParameters().construct(*params).save(
args.params)
if bow.matrix.shape[-1] != voc_size:
raise ValueError(
"The vocabulary sizes do not match: %d != %d" %
(bow.matrix.shape[-1], voc_size))
log.info("Processing batch %d / %d", i + 1, len(loader))
# Modify features if needed
# TODO(vmarkovtsev): port to the new structure
# batches = modify_feature_weights(batches, args)
hashes = libMHCUDA.minhash_cuda_calc(gen, bow.matrix)
job = [(k, h) for k, h in zip(bow.documents, hashes)]
log.info("Saving the hashtables")
df = spark.parallelize(job).flatMap(HashExploder(
htnum, band_size)).toDF()
df.write \
.format("org.apache.spark.sql.cassandra") \
.mode("append") \
.options(table=tables["hashtables"], keyspace=args.keyspace) \
.save()
df.write \
.format("org.apache.spark.sql.cassandra") \
.mode("append") \
.options(table=tables["hashtables2"], keyspace=args.keyspace) \
.save()
log.info("Saving the hashes")
spark.parallelize(job) \
.map(lambda x: Row(sha1=x[0], value=bytearray(x[1].data))) \
.toDF() \
.write \
.format("org.apache.spark.sql.cassandra") \
.mode("append") \
.options(table=tables["hashes"], keyspace=args.keyspace) \
.save()
finally:
libMHCUDA.minhash_cuda_fini(gen)
