def retrieve_sents(self):
indexDir = self.indexDir
query = self.query
sent_ind_list = []
# template = CustomTemplate(format)
fsDir = SimpleFSDirectory(Paths.get(indexDir))
# print indexDir
searcher = IndexSearcher(DirectoryReader.open(fsDir))
analyzer = StandardAnalyzer()
parser = QueryParser("contents", analyzer)
parser.setDefaultOperator(QueryParser.Operator.OR)
query = parser.parse(query)
# print query
start = datetime.now()
scoreDocs = searcher.search(query, 50).scoreDocs
duration = datetime.now() - start
# print query
if self.stats:
print >> sys.stderr, "Found %d sentences (in %s) that matched query '%s':" % (
len(scoreDocs), duration, query)
for scoreDoc in scoreDocs:
# print scoreDoc.doc
# doc = searcher.doc(scoreDoc.doc)
sent_ind_list.append(scoreDoc.doc)
return sent_ind_list
def buscar(indexDir, args,options = None):
#lucene.initVM(vmargs=['-Djava.awt.headless=true'])
fsDir = SimpleFSDirectory(File(indexDir))
#print fsDir
#Criando buscador baseado no diretorio dos indices passados pelo usuario
searcher = IndexSearcher(DirectoryReader.open(fsDir))
#Analizador para filtro dos tokens
analyzer = StandardAnalyzer(Version.LUCENE_CURRENT)
#print analyzer
#Criando um QueryParser usando por padrao contents
#Variavel com as restricoes da busca
parser = QueryParser(Version.LUCENE_CURRENT, "keywords", analyzer)
#print parser
parser.setDefaultOperator(QueryParser.Operator.AND)
#print args
#Juntando parametros passados com o valor do mesmo
command = ' +'.join(args)
#print command
query = parser.parse(command)
print query
#Criando um JArray com resultado da consulta
return searcher.search(query, 200).scoreDocs
class Searcher:
def __init__(self, indexDir):
self.directory = SimpleFSDirectory(Paths.get(indexDir))
self.searcher = IndexSearcher(DirectoryReader.open(self.directory))
self.nameQueryParser = QueryParser('name', StandardAnalyzer())
self.nameQueryParser.setDefaultOperator(QueryParser.Operator.AND)
self.idQueryParser = QueryParser('id', StandardAnalyzer())
self.idQueryParser.setDefaultOperator(QueryParser.Operator.AND)
def find_by_name(self, name):
query = self.nameQueryParser.parse(name)
docs = self.searcher.search(query, 100).scoreDocs
tables = []
for scoreDoc in docs:
doc = self.searcher.doc(scoreDoc.doc)
table = dict((field.name(), field.stringValue())
for field in doc.getFields())
tables.append(table)
return tables
def find_by_id(self, id):
query = self.idQueryParser.parse(id)
docs = self.searcher.search(query, 100).scoreDocs
tables = []
for scoreDoc in docs:
doc = self.searcher.doc(scoreDoc.doc)
table = dict((field.name(), field.stringValue())
for field in doc.getFields())
tables.append(table)
return tables
class LuceneRanker(object):
def __init__(self, tfidf_path, strict=True):
lucene.initVM()
analyzer = StandardAnalyzer()
reader = DirectoryReader.open(SimpleFSDirectory(Paths.get(tfidf_path)))
self.searcher = IndexSearcher(reader)
self.parser = QueryParser("text", analyzer)
self.parser.setDefaultOperator(QueryParser.Operator.OR)
def closest_docs(self, query, k=1):
"""Closest docs by dot product between query and documents
in tfidf weighted word vector space.
"""
query = self.parser.parse(
query.replace('/', '//').replace('?', '').replace('"', ''))
hits = self.searcher.search(query, k)
docids = []
docs = []
for i, hit in enumerate(hits.scoreDocs):
doc = self.searcher.doc(hit.doc)
docs.append(unicode(doc['text']))
docids.append(unicode(doc['title']))
return docids, docs
def batch_closest_docs(self, queries, k=1, num_workers=None):
"""Process a batch of closest_docs requests multithreaded."""
# get highest scoring document for multiple queries
batch = []
for i, q in enumerate(queries):
if i % 100 == 0:
print(i)
t0 = time.time()
docids, docs = self.closest_docs(q, k)
batch.append((docids, docs))
return batch
def parse(self, query):
return None
def text2spvec(self, query):
return None
def get_doc_index(self, doc_id):
return 0
def get_doc_id(self, doc_index):
return 0
def __exit__(self, *args):
pass
def perform_search(self, searchterm):
# processing a query
parser = QueryParser(Version.LUCENE_CURRENT, "content", self.analyzer)
parser.setDefaultOperator(QueryParser.Operator.AND)
query = parser.parse(searchterm)
# conducting search
searcher = IndexSearcher(DirectoryReader.open(self.store))
start = datetime.now()
scoreDocs = searcher.search(query, 50).scoreDocs
duration = datetime.now() - start
print scoreDocs
print duration
def getQueryParser(self):
analyzers = self.getSearchingAnalyzers()
map = HashMap()
map.put('name', analyzers['name'])
map.put('parent', analyzers['parent'])
map.put('content', analyzers['default'])
map.put('id', analyzers['id'])
analyzerWrapper = PerFieldAnalyzerWrapper(analyzers['default'], map)
queryParser = QueryParser(Version.LUCENE_CURRENT, 'content', analyzerWrapper)
queryParser.setAutoGeneratePhraseQueries(PHRASE_QUERY_BY_DEFAULT)
queryParser.setPhraseSlop(PHRASE_SLOP)
queryParser.setFuzzyMinSim(FUZZY_MIN_SIM)
queryParser.setDefaultOperator(DEFAULT_OPERATOR)
return queryParser
def search(termo, **args):
indexDir = os.environ.get('MANDEX') or '3iteracao'
fsDir = SimpleFSDirectory(File(indexDir))
searcher = IndexSearcher(DirectoryReader.open(fsDir))
analyzer = StandardAnalyzer(Version.LUCENE_CURRENT)
parser = QueryParser(Version.LUCENE_CURRENT, field, analyzer)
parser.setDefaultOperator(QueryParser.Operator.OR)
query = parser.parse(termo + ' '.join(args.values()))
start = datetime.now()
scoreDocs = searcher.search(query, 50).scoreDocs
duration = datetime.now() - start
politicos = []
for scoreDoc in scoreDocs:
doc = searcher.doc(scoreDoc.doc)
table = dict((field.name(), field.stringValue()) for field in doc.getFields())
politicos.append(table)
return politicos
format = a
elif o == "--index":
indexDir = a
elif o == "--stats":
stats = True
class CustomTemplate(Template):
delimiter = '#'
template = CustomTemplate(format)
fsDir = SimpleFSDirectory(Paths.get(indexDir))
searcher = IndexSearcher(DirectoryReader.open(fsDir))
analyzer = StandardAnalyzer()
parser = QueryParser("keywords", analyzer)
parser.setDefaultOperator(QueryParser.Operator.AND)
query = parser.parse(' '.join(args))
start = datetime.now()
scoreDocs = searcher.search(query, 50).scoreDocs
duration = datetime.now() - start
if stats:
print >>sys.stderr, "Found %d document(s) (in %s) that matched query '%s':" %(len(scoreDocs), duration, query)
for scoreDoc in scoreDocs:
doc = searcher.doc(scoreDoc.doc)
table = dict((field.name(), field.stringValue())
for field in doc.getFields())
print template.substitute(table)
def search(request):
query = request.GET.get('q', None)
page = int(request.GET.get('page', 1))
perPage = 5
nodes = []
usage = {}
usage["time"] = time.time()
if not query:
count = 0
nodes = []
keywords = []
else:
#conn = ReplicaSetConnection('localhost', replicaSet='jlu')
conn = MongoClient('localhost')
db = conn.sina
#db.read_preference = ReadPreference.SECONDARY
CACHE = db.cache
keywords = query.split(' ')
cache = CACHE.find_one({"query":keywords,"page":page})
if cache == None:
print "query cache not found"
VM_ENV.attachCurrentThread()
fsDir = SimpleFSDirectory(File(settings.ROOT_DIR+'/index'))
searcher = IndexSearcher(DirectoryReader.open(fsDir))
analyzer = SmartChineseAnalyzer(Version.LUCENE_CURRENT)
parser = QueryParser(Version.LUCENE_CURRENT, 'text', analyzer)
parser.setDefaultOperator(QueryParser.Operator.AND)
lucene_query = parser.parse(query)
scoreDocs = searcher.search(lucene_query, 3000000).scoreDocs
ids = []
for scoreDoc in scoreDocs:
doc = searcher.doc(scoreDoc.doc)
for field in doc.getFields():
ids.append(field.stringValue())
print "got ids from lucene",len(ids)
ids = [int(x) for x in ids]
NODES = conn.sina.nodes
count = 0
for n in NODES.find({"node_id":{"$in":ids}}).sort("in_degree",-1).skip((page-1)*perPage):
count += 1
print "doing",n["node_id"],count,"/",perPage
n["js"] = similarity(n["node_id"],topk=10)
nodes.append(n)
if len(nodes) == perPage:
break
count = len(ids)
CACHE.insert({"query":keywords,"page":page,"cache":nodes,"count":len(ids)})
usage["isCache"] = False
else:
print "found query cache"
usage["isCache"] = True
nodes = cache["cache"]
count = cache["count"]
pagenav = {}
if page == 1:
pagenav["has_pre"] = None
else:
pagenav["has_pre"] = page - 1
if page > count/perPage:
pagenav["has_next"] = None
else:
pagenav["has_next"] = page + 1
pagenav["page"] = page
usage["time"] = time.time() - usage["time"]
return {
'q' : request.GET.get('q', ''),
'keywords' : keywords,
'nodes' : nodes,
'count' : count,
'page' : pagenav,
'usage' : usage,
}
class TASearcher():
def __init__(self, queries=[], criteria=[], conjunctions=[], orderby=["ta"], ascending=True, limit=10000):
vm.attachCurrentThread()
self.queries = [query for query in queries if len(query.strip()) > 0]
self.criteria = criteria
self.conjunctions = conjunctions
self.orderby = orderby
self.ascending = ascending
self.queryString = ""
self.limit = limit
self.fields = fields
self.analyzer = PorterStemmerAnalyzer()
self.queryParser = QueryParser(Version.LUCENE_30, "freetext", self.analyzer)
self.queryParser.setAllowLeadingWildcard(True)
self.queryParser.setDefaultOperator(QueryParser.Operator.AND)
indexDir = settings.LUCENE_INDEX_DIRECTORY
self.index = MMapDirectory(File(indexDir))
def createQueryString(self):
# Simple
if len(self.criteria) == 0:
self.queryString = "(%s) OR freetext-normalized:(%s)" % (self.queries[0], self.queries[0])
# Advanced
else:
queryPairs = []
criteriaQueries = zip(self.criteria, self.queries)
self.criteria = dict(criteriaQueries).keys()
for criterion, query in criteriaQueries:
if criterion in ("volume", "number", "category-label", "pubtype", "author-sort"):
queryPairs.append("%s:%s" % (criterion, query))
elif criterion == "year":
queryPairs.append("year-start:%s OR year-end:%s" % (query, query))
else:
queryPairs.append('%s:%s OR %s-normalized:%s' % (criterion, query, criterion, query))
# queryPairs = ["%s:%s"%(criterion,query.replace(" ", "+")) for criterion, query in zip(criteria, queries)]
try:
queryString = "%s %s" % (queryPairs[0], " ".join(
["%s (%s)" % (conj, pair) for conj, pair in zip(self.conjunctions, queryPairs[1:])]))
self.queryString = queryString
return queryString
except:
self.queryString = "freetext"
return self.queryString
def getQueryString(self):
return self.queryString
def _getHits(self):
reader = IndexReader.open(self.index)
searcher = IndexSearcher(reader)
# Sortierung nach Band- und Eintragsnummer (4: Wert als Integer behandeln)
sortDict = {
"ta": (("volume", SortField.Type.INT), ("number", SortField.Type.INT)),
"year": (("year-start", SortField.Type.INT), ("year-end", SortField.Type.INT)),
"author-title": (("author-sort", SortField.Type.STRING), ("title-sort", SortField.Type.STRING)),
"title": (("title-sort", Locale.GERMAN),),
"author": (("author-sort", Locale.GERMAN),),
}
sortFields = []
reverse = not self.ascending
for name in self.orderby:
for fieldName, typeNum in sortDict.get(name, []):
sortFields.append(SortField(fieldName, typeNum, reverse))
if len(sortFields) == 0:
sortFields = [SortField("volume", SortField.Type.INT), SortField("number", SortField.Type.INT)]
sort = Sort(sortFields)
topDocs = searcher.search(self.query, None, 80000, sort)
hits = topDocs.scoreDocs
self.hits = hits
self.searcher = searcher
lang = translation.get_language()
if lang != "de":
lang = "en"
facets = {"author": {}, "pubtype": {}, "category-%s" % lang: {}}
# Highlighting
highlighter = Highlighter(SimpleHTMLFormatter('<span class="highlight">', '</span>'), QueryScorer(self.query))
hitObjects = []
fields = {}
for hit in hits:
doc = searcher.doc(hit.doc)
# print unicode(doc)
fields["score"] = hit.score
fields["volume"] = doc["volume"]
fields["number"] = doc["number"]
fields["id"] = doc["id"]
fields["title"] = doc["title"]
fields["author"] = doc["author"]
fields["authors"] = [field.stringValue() for field in doc.getFields("author")]
for author in fields["authors"]: # XXX
facets["author"][author] = facets["author"].get(author, 0) + 1 # XXX
fields["categories"] = [field.stringValue() for field in doc.getFields("category-%s" % lang)]
for cat in fields["categories"]:
facets["category-%s" % lang][cat] = facets["category-%s" % lang].get(cat, 0) + 1
maxNumFragmentsRequired = 2
fragmentSeparator = "...";
pubtype = doc["pubtype"]
fields["pubtype"] = pubtype
facets["pubtype"][pubtype] = facets["pubtype"].get(pubtype, 0) + 1
fields["city"] = doc["city"]
fields["year"] = doc["year-start"]
if fields["year"] and doc["year-end"] and doc["year-end"] != fields["year"]:
fields["year"] += " - " + doc["year-end"]
highlightFields = ("title", "author", "city", "year", "category")
if "freetext" in self.criteria:
for fieldName in highlightFields:
try:
tokenStream = self.analyzer.tokenStream(fieldName, lucene.StringReader(fields[fieldName]))
newVal = highlighter.getBestFragments(tokenStream, fields[fieldName], maxNumFragmentsRequired,
fragmentSeparator)
if len(newVal) > 0:
# fields[fieldName] = re.sub(r'</span>\s*<span class="highlight">', ' ', newVal)
fields[fieldName] = newVal
except:
continue
for fieldName in highlightFields:
if fieldName in self.criteria or fieldName + "-de" in self.criteria or fieldName + "-en" in self.criteria:
try:
tokenStream = self.analyzer.tokenStream(fieldName, lucene.StringReader(fields[fieldName]))
newVal = highlighter.getBestFragments(tokenStream, fields[fieldName], maxNumFragmentsRequired,
fragmentSeparator)
if len(newVal) > 0:
# fields[fieldName] = re.sub(r'</span>\s*<span class="highlight">', ' ', newVal)
fields[fieldName] = newVal
except:
continue
"""if "author" in self.criteria:
try:
tokenStream = self.analyzer.tokenStream("author", lucene.StringReader(fields["author"]))
fields["author"] = highlighter.getBestFragments(tokenStream, fields["author"], maxNumFragmentsRequired, fragmentSeparator)
except:
pass"""
hitObjects.append(
Hit(fields["id"], fields["volume"], fields["number"], fields["title"], fields["author"], fields["city"],
fields["year"], fields["categories"], fields["pubtype"], fields["score"]))
facetsToDelete = []
for facet in facets:
if len(facets[facet]) < 2:
facetsToDelete.append(facet)
continue
values = sorted(facets[facet].items(), key=itemgetter(0))
values = sorted(values, key=itemgetter(1), reverse=True)
facets[facet] = values[:25]
for facet in facetsToDelete:
del facets[facet]
self.facets = facets
reader.close()
self.hitObjects = hitObjects
return hitObjects
def search(self):
self.createQueryString()
querystr = self.getQueryString()
self.query = self.queryParser.parse(querystr)
return self._getHits()
def getAll(self):
self.query = MatchAllDocsQuery()
return self._getHits()
indexDir = a
elif o == "--stats":
stats = True
class CustomTemplate(Template):
delimiter = '#'
template = CustomTemplate(format)
fsDir = SimpleFSDirectory(Paths.get(indexDir))
searcher = IndexSearcher(DirectoryReader.open(fsDir))
analyzer = StandardAnalyzer()
parser = QueryParser("keywords", analyzer)
parser.setDefaultOperator(QueryParser.Operator.AND)
query = parser.parse(' '.join(args))
start = datetime.now()
scoreDocs = searcher.search(query, 50).scoreDocs
duration = datetime.now() - start
if stats:
print >> sys.stderr, "Found %d document(s) (in %s) that matched query '%s':" % (
len(scoreDocs), duration, query)
for scoreDoc in scoreDocs:
doc = searcher.doc(scoreDoc.doc)
table = dict(
(field.name(), field.stringValue()) for field in doc.getFields())
print template.substitute(table)
raise Exception(
'At least one between TAGS_AND_GENRES and DESCR should be True')
lucene.initVM(vmargs=['-Djava.awt.headless=true'])
fsDir = SimpleFSDirectory(Paths.get('index'))
searcher = IndexSearcher(DirectoryReader.open(fsDir))
if CLASSIC_SIMILARITY:
searcher.setSimilarity(ClassicSimilarity())
analyzer = EnglishAnalyzer()
tags_parser = QueryParser(TAGS_LABEL, analyzer)
genres_parser = QueryParser(GENRES_LABEL, analyzer)
descr_parser = QueryParser(DESCR_LABEL, analyzer)
tags_parser.setDefaultOperator(QueryParser.Operator.OR)
genres_parser.setDefaultOperator(QueryParser.Operator.OR)
descr_parser.setDefaultOperator(QueryParser.Operator.OR)
BooleanQuery.setMaxClauseCount(
2000000) # prevents 1024 limit error for very long queries
############################## Build user queries ##########################
ratings = ML1M('../datasets/ml-1m').ratings
movies_descriptions = pd.read_csv('../datasets/movies-descriptions.csv')
movies_tags = pd.read_csv('../datasets/movies-tags.csv')
movies_genres = pd.read_csv('../datasets/movies-genres.csv')
users = set(ratings[['user']].values.flatten())