def _hash_bits(self, key):
# http://spyced.blogspot.com/2009
# /01/all-you-ever-wanted-to-know-about.html
hash1 = mmh3.hash(key, 0)
hash2 = mmh3.hash(key, hash1)
for i in range(self._hash_funcs):
yield abs((hash1 + i * hash2) % self._bits_per_slice)
def data(path, label_path=None):
fd = open(path)
fd.readline() # skip headers
hash_cols = [3,4,34,35,61,64,65,91,94,95]
npairs = len(hash_cols)
x = [0] * (146 + npairs*(npairs-1)/2)
if label_path:
label = open(label_path)
label.readline() # skip headers
for t, line in enumerate(fd):
# parse x
row = line.rstrip().split(',')
for m, feat in enumerate(row):
if m == 0:
ID = int(feat)
else:
# one-hot encode everything with hash trick
# categorical: one-hotted
# boolean: ONE-HOTTED
# numerical: ONE-HOTTED!
# note, the build in hash(), although fast is not stable,
# i.e., same value won't always have the same hash
# on different machines
x[m] = abs(mmh3.hash(str(m) + '_' + feat)) % D
for i in xrange(10):
for j in xrange(i+1,10):
m += 1
x[m] = abs(mmh3.hash(str(m)+'_'+row[hash_cols[i]]+"_x_"+row[hash_cols[j]])) % D
# parse y, if provided
if label_path:
# use float() to prevent future type casting, [1:] to ignore id
y = [float(y) for y in label.readline().split(',')[1:]]
yield (ID, x, y) if label_path else (ID, x)
def authenticate(self, name, password, certificates, certhash, certstrong, current=None):
with self.app.app_context():
if name == 'SuperUser':
return RET_FALLTHROUGH
user = User.query.filter_by(user_id=name).first()
if not user:
try:
uuid.UUID(name, version=4)
except ValueError:
return RET_DENIED
guest_user = GuestUser.query.get(name)
if guest_user:
if not guest_user.password == password or guest_user.banned:
return RET_DENIED
if guest_user.corporation:
self.app.logger.debug('Authenticating guest with: {} {} {}'.format(abs(mmh3.hash(guest_user.id.hex)), '[{}][GUEST] {}'.format(self.get_ticker(guest_user.corporation), guest_user.name), [u'Guest']))
return abs(mmh3.hash(guest_user.id.hex)), '[{}][GUEST] {}'.format(self.get_ticker(guest_user.corporation), guest_user.name), [u'Guest']
else:
self.app.logger.debug('Authenticating guest with: {} {} {}'.format(abs(mmh3.hash(guest_user.id.hex)), '[GUEST] {}'.format(guest_user.name), [u'Guest']))
return abs(mmh3.hash(guest_user.id.hex)), '[GUEST] {}'.format(guest_user.name), ['Guest']
else:
return RET_DENIED
if not user.mumble_password == password:
return RET_DENIED
self.app.logger.debug('Authenticating user with: {} {} {}'.format(mmh3.hash(user.user_id), '[{}] {}'.format(self.get_ticker(user.corporation_name), user.main_character), user.groups))
return mmh3.hash(user.user_id), '[{}] {}'.format(self.get_ticker(user.corporation_name), user.main_character), user.groups
def hash(self, string):
hash_arr = []
hash1 = mmh3.hash(string, 0)
hash2 = mmh3.hash(string, hash1)
for i in range(self.k):
hash_arr.append(abs((hash1 + i * hash2) % self.m))
return hash_arr
def Hashmap_WordVector(self,nbits):
length=len(self.Words_Vector)
self.bl_bits=nbits
self.bloom_vector=self.bl_bits*bitarray('0')
for i in range(length):
self.hashmap1.append(mmh3.hash(self.Words_Vector[i]) % self.bl_bits )
self.hashmap2.append(mmh3.hash(self.Words_Vector[i],self.hashmap1[i]) % self.bl_bits )
self.hashmap3.append(mmh3.hash(self.Words_Vector[i],self.hashmap2[i]) % self.bl_bits )
self.bloom_vector[self.hashmap1[i]]=1
self.bloom_vector[self.hashmap2[i]]=1
self.bloom_vector[self.hashmap3[i]]=1
def get_hash(label,namespace,feature,stride,mask):
if namespace:
namespace_hash = mmh3.hash(namespace,0)
else:
namespace_hash = 0
if is_number(feature):
feature_hash = int(feature) + namespace_hash
else:
feature_hash = mmh3.hash(feature,namespace_hash)
feature_hash_oaa = feature_hash * stride
return (feature_hash_oaa + label - 1) & mask
def parse_block(block):
index_block = []
for file_path in block:
file_path_hash = mmh3.hash(file_path)
with open(file_path, 'r') as input_file:
for line in input_file:
items = line.strip().split(' ')
index_block.append(
(mmh3.hash(items[0]),
[file_path_hash,
items[1]])
)
return index_block
def select_terms_meta(query_terms, term_dict_stream):
"""
reads term dictionary generator and selects query terms meta info
"""
terms_meta_dict = {}
for term in query_terms:
term_hash = mmh3.hash(term.encode("utf-8"))
terms_meta_dict[term_hash] = {
"term": term,
"seek_offset": None,
"size": None
}
seek_offset = 0
unseen_terms = terms_meta_dict.keys()
for dict_term_hash, dict_term_size in term_dict_stream:
if dict_term_hash in unseen_terms:
terms_meta_dict[dict_term_hash]["seek_offset"] = seek_offset
terms_meta_dict[dict_term_hash]["size"] = dict_term_size
unseen_terms.remove(dict_term_hash)
if len(unseen_terms) == 0:
break
seek_offset += dict_term_size
query_terms_dict = {}
for _, term_meta in terms_meta_dict.items():
query_terms_dict[term_meta["term"]] = {
"seek_offset": term_meta["seek_offset"],
"size": term_meta["size"]
}
return query_terms_dict
def _indices(self, x):
''' A helper generator that yields the indices in x
The purpose of this generator is to make the following
code a bit cleaner when doing feature interaction.
'''
# first yield index of the bias term
yield 0, 1.
# then yield the linear indices
if self.interaction != 2:
for i,val in x:
yield i,val
# now yield interactions (if applicable)
if self.interaction:
D = self.D
L = len(x)
x = sorted(x)
for i in xrange(L):
for j in xrange(i+1, L):
# one-hot encode interactions with hash trick
yield abs(hash(str(x[i][0]) + '_' + str(x[j][0]))) % D, x[i][1]*x[j][1]
def process(self):
# load data
data = self.load()
# index to elastic search
print "\nStart processing"
cursor = Cursor(self.es, self.data_from)
cursor_num = cursor.get_new_cursor()
for each_data in data:
key_string = ''
for each_key_string in key_value:
key_string += each_data[each_key_string]
hashkey = mmh3.hash(key_string)
print "parsing id: ", hashkey
# try to read record
try:
res = self.es.get( index="deltadb",
doc_type="data",
id=hashkey)
if res["found"]:
node = self.update_node(res["_source"], each_data, cursor_num)
else:
node = self.create_node(each_data, cursor_num)
except:
node = self.create_node(each_data, cursor_num)
# insert back to es
try:
res = self.es.index(index="deltadb",
doc_type="data",
id=hashkey,
body=node)
except:
continue
print "\nProcess finish."
def getHash(word): ''' This return the hash value and does the anding with 0xffffffffL on a 32 bit system ''' curHash = mmh3.hash(word) curHash = curHash & 0xffffffffL return curHash
def shingles2sketch(shingles, m_baskets=20):
baskets = defaultdict(lambda: -float("inf"))
for shingle in shingles:
h = mmh3.hash(shingle.encode('utf8'))
if baskets[h % m_baskets] < h:
baskets[h % m_baskets] = h
return sorted(baskets.values())
def save_cursor(self, cursor_data):
cursor_id = mmh3.hash(self.data_from)
res = self.es.index(index="lookup",
doc_type="data",
id=cursor_id,
body=cursor_data)
return
def saveSuccessCrawlDoc(crawldoc):
'''step1: save crawl success crawldoc to crawl_result, make sure docid is unique
step2: save outlinks(found new url) to crawl_pending
step3: update crawl url status which at crawl_pending to crawled'''
values = crawldoc.convert
# only string can save to db, change dict or list to string.
# reference: cccrawler.proto.db.models.CrawlResult
values['reservation_dict'] = str(crawldoc.reservation_dict)
values['history'] = str(values['history'])
values['header'] = str(values['header'])
values['created_at'] = timeutils.utcnow_ts()
utils.convert_datetimes(values, 'created_at', 'deleted_at', 'updated_at')
crawldoc_ref = models.CrawlResult()
crawldoc_ref.update(values)
crawldoc_ref.save()
_updateCrawlStatus(crawldoc.pending_id,'crawled',crawlfail=False)
cl = deweight.get_client()
fresh_docs = []
for doc in crawldoc.outlinks:
real_url = urlutils.normalize(doc.url)
docid = mmh3.hash(real_url)
if not cl.has(docid):
fresh_doc = addPendingCrawlDocDict(doc.url, int(crawldoc.level),
crawldoc.docid, crawldoc.reservation_dict,doc.text,
real_url, docid)
print '@'*60
print fresh_doc
print '@'*60
fresh_docs.append(fresh_doc)
rushPendingCrawlDoc(fresh_docs)
def lookup(self, string):
for seed in xrange(self.hash_count):
result = mmh3.hash(string, seed) % self.size
if self.bit_array[result] == 0:
return "--%s--"%(words_list[i])
return "Probably"
def lookup(self, string):
hashlist = [mmh3.hash(string, seed=x) % 1000000 for x in xrange(Bloom.numberofhash)]
for x in hashlist:
if not Bloom.bit[x]:
return False
return True
def add(self, string):
# Hash the string
hashlist = [mmh3.hash(string, seed=x) % 1000000 for x in xrange(Bloom.numberofhash)]
for x in hashlist:
Bloom.bit[x] = 1
def _bit_offsets(self, value):
'''The bit offsets to set/check in this Bloom filter for a given value.
Instantiate a Bloom filter:
>>> dilberts = BloomFilter(
... num_values=100,
... false_positives=0.01,
... key='dilberts',
... )
Now let's look at a few examples:
>>> tuple(dilberts._bit_offsets('rajiv'))
(183, 319, 787, 585, 8, 471, 711)
>>> tuple(dilberts._bit_offsets('raj'))
(482, 875, 725, 667, 109, 714, 595)
>>> tuple(dilberts._bit_offsets('dan'))
(687, 925, 954, 707, 615, 914, 620)
Thus, if we want to insert the value 'rajiv' into our Bloom filter,
then we must set bits 183, 319, 787, 585, 8, 471, and 711 all to 1. If
any/all of them are already 1, no problems.
Similarly, if we want to check to see if the value 'rajiv' is in our
Bloom filter, then we must check to see if the bits 183, 319, 787, 585,
8, 471, and 711 are all set to 1. If even one of those bits is set to
0, then the value 'rajiv' must never have been inserted into our Bloom
filter. But if all of those bits are set to 1, then the value 'rajiv'
was *probably* inserted into our Bloom filter.
'''
encoded_value = self._encode(value)
for seed in range(self.num_hashes()):
yield mmh3.hash(encoded_value, seed=seed) % self.size()
def makeHashFuncs(key, size, numHashes):
hashValue = []
for i in range(1, (numHashes+1)):
value = mmh3.hash(key,i) % size
#print value
hashValue.append(value)
return hashValue
def get_image_cache_name(url):
last_segment = url.split('/')[-1]
if last_segment.count('.') == 1:
extension = '.' + url.split('.')[-1]
else:
extension = ""
return 'img' + str(mmh3.hash(url.encode('utf-8'))) + extension.lower()
def in_bf(self, elem): for x in xrange(self.hash_count): index = mmh3.hash(elem, x) % self.size if (self.bit_arr[index] == 0): return False return True
def add_document_indexes(self, text, url, is_print=False):
# TODO: Maybe, it is good idea to change key from string to hash
self.documents.append(url)
doc_id = len(self.documents)-1
word_list = self._split_text(text.lower())
for word in word_list:
#"""
try:
word = word.encode('utf-8')
w_hash = mmh3.hash(word) % self.count_of_files
if is_print:
print word, w_hash
r_index = self.full_index[w_hash]
if r_index.has_key(word):
r_index[word]["docs"].append(doc_id)
else:
r_index[word] = {}
r_index[word]["docs"] = [doc_id]
if not r_index.has_key('encoding'):
r_index['encoding'] = self._encoding
except Exception as e:
print "EXCEPRION", word
traceback.print_exc()
def select_hash(hashkind, line):
"""Select the kind of hashing for the line.
:param hashkind: -- (str) The name of the hash
:param line: -- (str) The string to hash.
This function is a kind of hash selector which will use the hash passed
in argument to hash the string also passed in argument.
"""
if hashkind == "md5":
hashline = hashlib.md5(line).hexdigest()
elif hashkind == "sha1":
hashline = hashlib.sha1(line).hexdigest()
elif hashkind == "crc":
crc32 = crcmod.Crc(0x104c11db7, initCrc=0, xorOut=0xFFFFFFFF)
crc32.update(line)
hashline = crc32.hexdigest()
elif hashkind == "murmur":
hashline = mmh3.hash(line)
return str(hashline)
def count(self, item):
counts = []
for k, v in zip(self.sketch, range(self.hashes)):
for j in k:
search_key = mmh3.hash(item, v) % self.size
counts.append(k[search_key])
return min(counts)
def last_seen(self, item):
timestamps = []
for k, v in zip(self.sketch, range(self.hashes)):
for j in k:
search_key = mmh3.hash(item, v) % self.size
timestamps.append(k[search_key])
return max(timestamps)
def contingentParitiesFunction(pop, verbose=False):
assert(pop.shape[1] == order * height)
popMissteps = []
traceAndFitness = []
for c in xrange(pop.shape[0]):
output = 0
ctr = 0
length = pop.shape[1]
loci = np.arange(length)
missteps = []
trace = ""
while ctr < height:
rng.seed(abs(mmh3.hash(trace)))
acc = 0
trace += "|"
for i in xrange(order):
idx = rng.randint(length - (ctr * order + i)) + 1
swap = loci[-idx]
loci[-idx] = loci[ctr * order + i]
loci[ctr * order + i] = swap
trace += "%2d:%s|" % (swap + 1, int(pop[c, swap]))
acc += pop[c, swap]
output += acc % 2
if acc % 2 == 0:
missteps.append(ctr + 1)
ctr +=1
popMissteps.append(missteps)
traceAndFitness.append((trace, height - len(missteps)))
if verbose:
for t in sorted(traceAndFitness):
print "%s %s " % t
return np.array([height - len(missteps) for missteps in popMissteps]), popMissteps
def alert_factory(location=None,
bssid=None,
channel=None,
essid=None,
tx=None,
intent=None):
# all arguments are required
assert not any([
location is None,
bssid is None,
channel is None,
essid is None,
tx is None,
intent is None,
])
# return dict from arguments
_id = str(mmh3.hash(''.join([ bssid, str(channel), intent])))
return {
'id' : _id,
'location' : location,
'bssid' : bssid,
'channel' : channel,
'tx' : tx,
'essid' : essid,
'intent' : intent,
'timestamp' : time.time(),
}
def get_scatter_prop(element_list):
""" Gets the scatter property for an entity's key path.
This will return a property for only a small percentage of entities.
Args:
element_list: A list of entity_pb.Path_Element objects.
Returns:
An entity_pb.Property object or None.
"""
def id_from_element(element):
if element.has_name():
return element.name()
elif element.has_id():
return str(element.id())
else:
return ''
to_hash = ''.join([id_from_element(element) for element in element_list])
full_hash = mmh3.hash(to_hash)
hash_bytes = struct.pack('i', full_hash)[0:2]
hash_int = struct.unpack('H', hash_bytes)[0]
if hash_int >= dbconstants.SCATTER_PROPORTION:
return None
scatter_property = entity_pb.Property()
scatter_property.set_name('__scatter__')
scatter_property.set_meaning(entity_pb.Property.BYTESTRING)
scatter_property.set_multiple(False)
property_value = scatter_property.mutable_value()
property_value.set_stringvalue(hash_bytes)
return scatter_property
def readHash(self):
hll = Hll(self.p)
x = sys.stdin.readline().rstrip('\n')
while x:
hll.AddItem(mmh3.hash(x))
x = sys.stdin.readline().rstrip('\n')
print hll.Count()
def lookup(self, string):
for seed in range(self.hash_count):
result = mmh3.hash(string, seed) % self.size
if self.bit_array[result] == 0:
#return "Nope"
return False
return True
def lookup(self, element):
for seed in self.seeds:
result = hash(element, seed) % self.size
if self.hash_values[result] == 0:
return False
return True
def exists(self, item):
for i in range(self.hash_count):
hashed_index = mmh3.hash(item, i) % self.size
if self.bit_array[hashed_index] == 0:
return False
return True
from ll import LL
import math
class HyperLogLog(LL):
def __len__(self):
indicator = sum(2**-m.counter for m in self.registers)
E = self.alpha * (self.num_registers**2) / float(indicator)
if E <= 5.0 / 2.0 * self.num_registers:
V = sum(1 for m in self.registers if m.counter == 0)
if V != 0:
Estar = self.num_registers * \
math.log(self.num_registers / (1.0 * V), 2)
else:
Estar = E
else:
if E <= 2**32 / 30.0:
Estar = E
else:
Estar = -2**32 * math.log(1 - E / 2**32, 2)
return Estar
if __name__ == "__main__":
import mmh3
hll = HyperLogLog(8)
for i in xrange(100000):
hll.add(mmh3.hash(str(i)))
print len(hll)
def add(self, s):
for seed in range(self.hash_num):
result = mmh3.hash(s, seed) % self.size
self.bit_array[result] = 1
def get_machoc_hash(self):
# Get Machoc Hash adapted from https://github.com/conix-security/machoke
binary = self.r2p
binary.cmd("aaa")
mmh3_line = ""
machoke_line = ""
funcs = json.loads(binary.cmd("aflj"))
if funcs is None:
print("r2 could not retrieve functions list")
def get_machoke_from_function(r2p, function):
"""Return machoke from specific
:rtype: object
"""
r2p.cmd("s {}".format(function["offset"]))
agj_error = 0
while True:
try:
fcode = json.loads(r2p.cmd("agj"))
break
except:
print >> sys.stderr, "Fail agj: %s" % hex(
function["offset"])
if agj_error == 5:
break
agj_error += 1
blocks = []
id_block = 1
try:
for block in fcode[0]["blocks"]:
blocks.append({
"id_block": id_block,
"offset": hex(block["offset"])
})
id_block += 1
except:
return ""
line = ""
id_block = 1
for block in fcode[0]["blocks"]:
word = "{}:".format(id_block)
for instruction in block["ops"]:
# Check if call
if instruction["type"] == "call":
word = "{}c,".format(word)
for ublock in blocks:
if hex(instruction["offset"] +
2) == ublock["offset"]:
word = "{}{},".format(word, ublock["id_block"])
# Check if jmp
if instruction["type"] == "jmp":
for ublock in blocks:
if instruction["esil"] == ublock["offset"]:
word = "{}{},".format(word, ublock["id_block"])
# Check if conditional jmp
elif instruction["type"] == "cjmp":
for ublock in blocks:
if hex(instruction["jump"]) == ublock["offset"]:
word = "{}{},".format(word, ublock["id_block"])
if hex(instruction["offset"] +
2) == ublock["offset"]:
word = "{}{},".format(word, ublock["id_block"])
else:
pass
if word[-2] == "c":
for ublock in blocks:
if hex(instruction["offset"] + 4) == ublock["offset"]:
word = "{}{},".format(word, ublock["id_block"])
if word[-2] == "c":
word = "{}{},".format(word, id_block + 1)
if word[-1] == ":" and id_block != len(fcode[0]["blocks"]):
word = "{}{},".format(word, id_block + 1)
# Clean word
if word[-1] == ",":
word = "{};".format(word[:-1])
elif word[-1] == ":":
word = "{};".format(word)
line = "{}{}".format(line, word)
id_block += 1
return line
for function in funcs:
machoke = get_machoke_from_function(binary, function)
machoke_line = "{}{}".format(machoke_line, machoke)
mmh3_line = "{}{}".format(
mmh3_line,
hex(mmh3.hash(machoke) & 0xffffffff).replace("0x", "").replace(
"L", ""),
)
binary.quit()
return mmh3_line
def test_hash_values(self):
""" Test that on randomized data, values computed from mmh3 and pymmh3 match. """
for i in range(10):
random_value = str(random.random())
self.assertEqual(mmh3.hash(random_value), pymmh3.hash(random_value))
def normalized_hash(identifier: str, activation_group: str) -> int:
return mmh3.hash("{}:{}".format(identifier, activation_group)) % 100 + 1
def lookup(self, string):
for seed in range(self.hash_count):
result = mmh3.hash(string, seed) % self.size
if self.bit_array[result] == 0:
return "Nope"
return "Probably"
def add(self, string):
for seed in range(self.hash_count):
result = mmh3.hash(string, seed) % self.size
self.bit_array[result] = 1
def lookup(string, bit_array, hash_count, size):
for seed in range(hash_count):
result = mmh3.hash(string, seed) % size
if bit_array[result] == 0:
return False
return True
def add(self, item): digests = [] for i in range (self.hash_counts): digest = mmh3.hash(item, i) % self.bit_array_use self.bit_array_size[digest] = True
def get_feature(feat_str, model):
# The feature string may be unicode, but MurmurHash3 expects ASCII encoded strings.
return mmh3.hash(feat_str.encode('ascii', 'xmlcharrefreplace')) % model.num_features
def schingling(doc):
return [mmh3.hash(doc[i:i + 9], signed=False) for i in range(len(doc) - 9)]
def normalized_hash(identifier, activation_group):
return mmh3.hash("{}:{}".format(activation_group, identifier),
signed=False) % 100 + 1
"mimeFile": mimeFile,
"normHtmlFile": normHtmlFile,
"plainTextFile": plainTextFile
}
# If enabled, remove boilerplate HTML
if options.boilerpipe:
logging.info(url + ": deboiling html")
extractor = ExtrB(extractor='ArticleExtractor', html=text)
deboiled = str(extractor.getHTML())
else:
deboiled = text
# We compute a hash on the HTML (either normalized one or after boilerpipe if enabled):
# if we get duplicate files we discard them
html_hash = mmh3.hash(deboiled, signed=False)
# checking for duplicate content (duplicates are discarded)
if html_hash in seen_html:
logging.info("Repeated file:\t" + url)
continue
# get text with Alcazar library
if options.parser == "alcazar":
logging.info(url + ": Getting text with Alcazar")
btext = alcazar.bodytext.parse_article(deboiled)
if btext.body_text:
plaintext = btext.body_text
else:
plaintext = ""
# or get text with beautifulsoup
def hash32(data: bytes) -> bytes:
return struct.pack('i', mmh3.hash(data))
def _hashes(self, key):
for i in xrange(self.k):
yield mmh3.hash(key, self.k)
def add(self, item):
for i in range(self.hash_count):
hashed_index = mmh3.hash(item, i) % self.size
self.bit_array[hashed_index] = 1
def _hash(self, element):
return [
b % self.size
for b in [mmh3.hash(element, i) for i in range(self.hash_count)]
]
def _hashes_opt(self, key):
# Kirsch - Mitzenmacher - Optimization
h0 = mmh3.hash(key, 1)
h1 = mmh3.hash(key, 10)
for i in xrange(self.k):
yield h0 + i * h1
def murmur3_32(text):
val = mmh3.hash(text)
return val if val >= 0 else val + 2**32
def runSim(args):
## avoid one processes starting multiple threads
os.environ["MKL_NUM_THREADS"] = "1"
os.environ["NUMEXPR_NUM_THREADS"] = "1"
os.environ["OMP_NUM_THREADS"] = "1"
dataset = args[0]
if dataset[-1] != '/':
dataset += '/'
ground_truth, theta = args[1]
## load dna reads into reads_lst
reads_lst = []
fastaFile = dataset + "/reads.fasta"
with open(fastaFile) as handle:
for values in SimpleFastaParser(handle):
reads_lst.append(values[1])
n = len(reads_lst)
## load precomputed Jaccard Similarities
JSims = np.loadtxt(dataset + "/minHashes/JSims.txt")
## load alignments
gt_file = "{}/{}_ground_truth.txt".format(dataset, ground_truth)
with open(gt_file) as f:
lines = [[float(x) for x in line.rstrip('\n').split('\t')]
for line in f]
refDict = {}
for i in range(n):
refDict[i] = {}
for line in lines:
refDict[int(line[0]) - 1][int(line[1]) -
1] = line[2] / (line[3] + line[4] - line[2])
refDict[int(line[1]) - 1][int(line[0]) -
1] = line[2] / (line[3] + line[4] - line[2])
## convert each read into it's k-mers
symLength = 7 # k in k-mer
def generateSymSets(reads_lst, symLength):
symSets = {}
for i, read in enumerate(reads_lst):
lst = set()
for j in range(len(read) - symLength):
lst.add(read[j:j + symLength])
symSets[i] = lst
return symSets
symSets = generateSymSets(reads_lst, symLength)
## load precomputed minHashes
minHashArr = np.zeros((n, 1000))
for i in range(n):
minHashArr[i] = np.load(dataset +
"minHashes/minHashes_{}.txt".format(i),
allow_pickle=True)
## load precomputed iid sequences and their minhashes
numRandReads = 5
randMinHashArr = np.zeros((numRandReads, 1000))
for i in range(numRandReads):
randMinHashArr[i] = np.load(dataset +
"randReads/randMinHashes_{}.txt".format(i),
allow_pickle=True)
minHashArrExtended = np.vstack((minHashArr[:, :1000], randMinHashArr))
## checking to see precomputed minHashes works
i = np.random.randint(0, n, size=100)
j = np.random.randint(0, 1000, size=100)
lst = []
for iter_round in range(100):
iterLst = list(symSets[i[iter_round]])
lst.append(
min([
mmh3.hash(sym, j[iter_round], signed=False) for sym in iterLst
]))
assert (np.alltrue(minHashArrExtended[i, j] == lst))
## checking to see precomputed JSim works
i = np.random.randint(0, n, size=100)
j = np.random.randint(0, n, size=100)
lst = []
for iter_round in range(100):
i1 = i[iter_round]
j1 = j[iter_round]
lst.append(JSims[i1, j1] == 1.0 *
len(symSets[i1].intersection(symSets[j1])) /
(len(symSets[i1].union(symSets[j1]))))
assert (np.alltrue(lst) and np.allclose(JSims, JSims.T))
## Testing SVD, JSimEmp, JSim Exact, reference vs all
storageArrGround = []
storageArrpHatSVD = []
storageArrJsimExact = []
storageArrJsimEmp = []
storageArrNumOnesCol = []
storageArrQjs = []
storageArrwSJS = []
h = 1000
for ref_read in trange(n):
groundTruthLocs = np.array(list(refDict[ref_read].keys()))
if len(groundTruthLocs) == 0: ## read has no alignments in dataset
continue
refReadMatches = refDict[ref_read]
groundTruthVals = [refReadMatches[i] for i in groundTruthLocs]
lst = set(list(groundTruthLocs))
rangeN = set(range(n))
rangeN.discard(ref_read)
toAppend = list(rangeN - lst)
groundTruthLocs = np.hstack((groundTruthLocs, np.array(toAppend)))
groundTruthVals += [0] * len(toAppend)
empiricalMatrix = (minHashArrExtended == minHashArrExtended[ref_read])
empiricalMatrix = np.delete(empiricalMatrix, ref_read, axis=0)[:, :h]
updatedGroundTruthLocs = groundTruthLocs - 1 * (groundTruthLocs >=
ref_read)
updatedGroundTruthLocs = updatedGroundTruthLocs.astype(int)
jSimEmpirical = np.mean(empiricalMatrix, axis=1)
jSimExact = np.delete(JSims[ref_read], ref_read)
## here we can modify what normalization is used without having to rerun SVDs
# u = np.loadtxt(dataset+"/SVD/raw_pi_refread_{}.txt".format(ref_read))
# pHatSVD = 1-np.abs(u[:n-1])/np.abs(np.median(u[:n-1])) ## normalize median of p_i
# pHatSVD = 1-np.abs(u[:n-1])/np.abs(np.median(u[n-1:])) ## random read normalization
# pHatSVD = 1-np.abs(u[:n-1])/np.max(np.abs(u[n-1:])) ## naive max normalziation
pHatSVD = np.loadtxt(dataset +
"/SVD/pi_refread_{}.txt".format(ref_read))
qSVD = np.loadtxt(dataset + "/SVD/qj_refread_{}.txt".format(ref_read))
## for approximation
empQ = empiricalMatrix.sum(axis=0)
x = np.matmul(empiricalMatrix - np.ones(empiricalMatrix.shape),
1 - np.array(empQ / np.max(empQ)))[:n - 1]
x = np.abs(x - np.min(x))
x /= np.max(x)
storageArrwSJS.extend(x[updatedGroundTruthLocs])
storageArrGround.extend(groundTruthVals)
storageArrpHatSVD.extend(pHatSVD[updatedGroundTruthLocs])
storageArrJsimEmp.extend(jSimEmpirical[:n - 1][updatedGroundTruthLocs])
storageArrJsimExact.extend(jSimExact[updatedGroundTruthLocs])
storageArrNumOnesCol.extend(np.mean(empiricalMatrix, axis=0))
storageArrQjs.extend(qSVD)
fpr, tpr, _ = roc_curve(
np.array(storageArrGround) >= theta, storageArrpHatSVD)
fpr_jsim, tpr_jsim, _ = roc_curve(
np.array(storageArrGround) >= theta, storageArrJsimExact)
fpr_js_emp, tpr_js_emp, _ = roc_curve(
np.array(storageArrGround) >= theta, storageArrJsimEmp)
fpr_wsjs, tpr_wsjs, _ = roc_curve(
np.array(storageArrGround) >= theta, storageArrwSJS)
pickle.dump([
auc(fpr, tpr),
auc(fpr_jsim, tpr_jsim),
auc(fpr_js_emp, tpr_js_emp),
auc(fpr_wsjs, tpr_wsjs), storageArrNumOnesCol,
np.corrcoef(storageArrpHatSVD, storageArrGround)[0, 1],
np.corrcoef(storageArrJsimExact, storageArrGround)[0, 1],
np.corrcoef(storageArrJsimEmp, storageArrGround)[0, 1], storageArrQjs,
'SJS AUC,JS AUC, JS emp AUC, wSJS AUC,numOnes per col,SJS r^2,JS r^2,JS emp r^2,storageArrQjs'
],
open(
"AUCs/{}_{}_{}.pkl".format(dataset[:-1], ground_truth,
str(theta % 1).split('.')[1]),
"wb"))
def insert(self, item):
for i in range(self.qty_hash):
t = mmh3.hash(bytes(item), i) % self.size
self.bitarray[t] = True
def faviconHash(self, data, web_source=None):
if web_source:
b64data = base64.encodebytes(data).decode()
else:
b64data = base64.encodebytes(data)
return mmh3.hash(b64data)
def hash(flowkey):
global width
flowkey_bytes = struct.pack("L", flowkey)
r = mmh3.hash(flowkey_bytes, signed=False)
return r % width
def add(self, element):
for seed in self.seeds:
result = hash(element, seed) % self.size
self.hash_values[result] = 1
return self.hash_values
def string_digest(item, index):
return mmh3.hash(bytes(item, 'utf-8'), index)
def is_member(self, item): for i in range (self.hash_counts): digest = mmh3.hash(item, i) % self.bit_array_use if self.bit_array_size[digest] == False: return False return True
def murmur(key):
return mmh3.hash(key)
#np.dot(m.transpose(),m)
#Jaccard(m[0],m[10])
#s=signature(m,10000)
#s.shape
#m_new = firma(m)
m_new2 = m.dot(rndVecs) # projected matrix
# Indexing text collection
for doc_id in range(m_new2.shape[0]):
docSgt = np.array(m_new2[doc_id, :] >= 0, dtype=np.int)
for blk in range(NRBLK):
# (blk*BLKSZ):((blk+1)*BLKSZ)
blkData = docSgt[(blk*BLKSZ):((blk+1)*BLKSZ)]
docHashVal = mmh3.hash(''.join(map(str, blkData))) % MAXBKTS
hshTbl_blk = HshTabls[blk]
if docHashVal not in hshTbl_blk:
hshTbl_blk[docHashVal] = set()
hshTbl_blk[docHashVal].add(doc_id + 1)
collision = np.zeros((m.shape[0], m.shape[0]), dtype=np.int)
for hshTbl_blk in HshTabls:
for e in hshTbl_blk:
for i in hshTbl_blk[e]:
for o in hshTbl_blk[e]:
collision[i - 1][o - 1] += 1
pldHaming=penalizedHcc(m_new2)
simcos=(np.pi / 2) * (1 - hmmg(m_new2))
simcospenalized =(np.pi / 2) * (1 - pldHaming)
print("End!")
