def processContext(match,doctext, wleft, wright):
"""
Optimize the extraction of context by limiting the amount of characters and pre-tokenizing
"""
left_start=max(0,match.start()-((wleft+15)*ESTIMATED_AVERAGE_WORD_LENGTH))
right_end=match.end()+((wright+15)*ESTIMATED_AVERAGE_WORD_LENGTH)
left=doctext[left_start:match.start()] # tokenize!
left=tokenizeText(removeCitations(left))
left=removePunctuation(left)
right=doctext[match.end():right_end] # tokenize!
right=tokenizeText(removeCitations(right))
right=removePunctuation(right)
return {"left":left,"right":right,"left_start":left_start,"right_end":right_end}
def getDocBOWpassagesMulti(doc, parameters=[100], doctext=None):
"""
Get BOW for document using full text minus references and section titles
Args:
doc: full SciDoc to get text for
Returns:
multiple BOWs in a dictionary where the keys are the parameters
"""
if not doctext:
doctext=doc.getFullDocumentText(doc, headers=True)
doctext=removeCitations(doctext).lower()
tokens=tokenizeText(doctext)
res={}
for param in parameters:
res[param]=[]
for i in xrange(0, len(tokens), param):
bow={"text":unTokenize(tokens[i:i+param])}
res[param].append(bow)
for i in xrange(param/2, len(tokens), param):
bow={"text":unTokenize(tokens[i:i+param])}
res[param].append(bow)
return res
def addDocBOWFullTextField(doc,res_dict,doctext=None):
"""
Adds the _full_text field
"""
if not doctext:
doctext=doc.getFullDocumentText(doc)
doctext=removeCitations(doctext).lower()
tokens=tokenizeText(doctext)
res_dict["_full_text"]=unTokenize(tokens)
def getDocBOWfull(doc, parameters=None, doctext=None):
"""
Get BOW for document using full text minus references and section titles
Args:
doc: full SciDoc to get text for
"""
if not doctext:
doctext=doc.getFullDocumentText(doc)
doctext=removeCitations(doctext).lower()
tokens=tokenizeText(doctext)
new_doc={"text":unTokenize(tokens)}
return {1:[new_doc]} # all functions must take a list of parameters and return dict[parameter]=list of BOWs
def getDocBOWTitleAbstract(doc, parameters=None, doctext=None):
"""
Get BOW for document made up of only title and abstract
"""
paragraphs=[]
doctext=doc["metadata"]["title"]+". "
if len(doc.allsections) > 0:
try:
doctext+=" " + doc.getSectionText(doc.allsections[0],False)
except:
doctext+=u"<UNICODE ERROR>"
doctext=removeCitations(doctext).lower()
tokens=tokenizeText(doctext)
return {1:[{"text":unTokenize(tokens)}]}
