diff demo/ner.py @ 0:90155bdd5dd6

first commit

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/demo/ner.py	Wed May 16 18:27:05 2018 +0100
@@ -0,0 +1,563 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Created on Sun Apr  1 14:05:17 2018
+
+@author: Emmanouil Theofanis Chourdakis
+"""
+
+from pypeg2 import *
+import re 
+
+def var_generator(T):
+    I = 0
+    while True:
+        I+=1
+        yield "{}{}".format(T, I)
+        
+
+
+def l_label_generator(T):
+    I = 0
+    while True:
+
+        I+=1
+        yield "<{}LINE{}>".format(T, I)        
+
+annot_var = re.compile("[A-Z][0-9]+")
+annot_pos = re.compile("[0-9]+ [0-9]+(\;[0-9]+ [0-9]+)*")
+annot_label = re.compile('[A-Za-z0-9_]+')
+label_var_tuple = re.compile(r'[A-Za-z0-9_]+\:[A-Z][0-9]+')
+
+class AnnotationType(Keyword):
+    grammar =  Enum(K("Place"), 
+                    K("Character"),
+                    K("Character_Line"),
+                    K("Motion"),                    
+                    K("Motion_Signal"),                                        
+                    K("Says"),
+                    K("Spatial_Signal"))
+
+class AttributeType(Keyword):
+    grammar = Enum(K("Age"), K("Gender"))
+
+class AnnotationTuple:
+    grammar = attr('variable',annot_var),\
+              attr('type',AnnotationType),\
+              attr('idx',annot_pos),\
+              attr('annotation',restline)
+                
+
+class AttributeTuple:
+    grammar = attr('variable', annot_var),\
+              attr('type',AttributeType), \
+              attr('target', annot_var), \
+              attr('annotation', restline)
+              
+class VarArg:
+    grammar = attr('label', annot_label), ':', attr('target', annot_var)
+              
+class VarArgs(List):
+    grammar = some(VarArg)
+    
+class RelationTuple:
+    grammar = attr('variable', annot_var),\
+              attr('args', VarArgs)
+                          
+class AnnotLine(List):
+    grammar = [AnnotationTuple, AttributeTuple, RelationTuple]
+              
+class AnnotationFile(List):
+    grammar = some(AnnotLine)
+
+def get_tokens_by_label(label, sent_tokens, sent_labels):
+
+    tokens = []
+    blabel = "B-{}".format(label)
+    ilabel = 'I-{}'.format(label)
+
+    tok_ = []
+    for n,l in enumerate(sent_labels):
+        if l == blabel:
+            if len(tok_) > 0:
+                tokens.append(tok_)
+            tok_ = [sent_tokens[n]]
+        elif l == ilabel:
+            tok_.append(sent_tokens[n])
+        else:
+            if len(tok_)>0:
+                tokens.append(tok_)
+            tok_ = []
+    return tokens         
+
+def get_token_head(span):
+
+    span_idx = [tok.i for tok in span]
+    head = span[0]
+    while head.head.i in span_idx:
+        if head == head.head:
+            return head
+    
+        head = head.head
+    return head
+    
+
+def get_min_dep_path(a, b, doc, LCA):
+    
+    lca_idx = LCA[a,b]
+    
+    if lca_idx == -1:
+        return "<UND>"
+    
+    lca = doc[LCA[a, b]]
+
+    m_a = []
+    m_b = []
+
+    # From tra go up to the LCA.
+
+    tok = doc[a]
+    while tok != lca:
+        if tok.head != None:
+            m_a.append(('up', tok.dep_))
+            tok = tok.head
+
+    tok = doc[b]
+    while tok != lca:
+        if tok.head != None:
+            m_b.append(('down', tok.dep_))
+            tok = tok.head    
+    m_b.reverse()
+
+    path = m_a + m_b
+    
+    return "::".join("{}|{}".format(tup[0], tup[1]) for tup in path)
+def get_dep_with_head(tok):
+    dep_ = []
+    while tok.head != tok:
+        dep_.append(tok.dep_)
+        tok = tok.head
+        
+    if len(dep_) == 1:
+        return dep_[0], tok.lemma_
+    else:
+        return None, tok.lemma_
+
+def var_generator(T):
+    I = 0
+    while True:
+        I+=1
+        yield "{}{}".format(T, I)
+
+def get_dep_with_head(tok):
+    dep_ = []
+    while tok.head != tok:
+        dep_.append(tok.dep_)
+        tok = tok.head
+        
+    if len(dep_) == 1:
+        return dep_[0], tok.lemma_
+    else:
+        return None, tok.lemma_
+    
+class Document:
+    def __init__(self, doc):
+        
+        self.doc = doc
+        self.LCA = doc.get_lca_matrix()
+        self.text = doc.text
+        self.sentences = [str(s) for s in doc.sents]
+        
+        self.tokens = []
+        self.token_sentences = []
+        
+        self.relations = []
+        
+        for m, sent in enumerate(doc.sents):
+            tlist = []
+            for n, tok in enumerate(sent):
+                token = Token(tok, doc, tok.i, sent, n)
+                tlist.append(token)
+            self.token_sentences.append(tlist)
+            self.tokens += tlist
+    
+    def add_token(self, token, doc, doc_idx, sent, sent_idx, label='NONE'):
+        token = Token(token, doc, doc_idx, sent, sent_idx, label)
+        self.tokens.append(token)
+        
+    def add_relation(self, trigger, arg1, arg2, label):
+        self.relations.append(Relation(arg1, arg2, trigger,  self.LCA, label))
+        
+    def find_tokens(self, start, end):
+        tokens = []
+        for tok in self.tokens:
+            if tok.start >= start and tok.end <= end:
+                tokens.append(tok)
+                
+        return tokens
+    
+    def assign_label_to_tokens(self, start, end, label):
+        tokens = self.find_tokens(start, end)
+        for n, token in enumerate(tokens):
+            if n == 0:
+                IOB = 'B'
+            else:
+                IOB = 'I'
+            
+            token.set_label('{}-{}'.format(IOB, label))
+            
+    def assign_label_to_tokens_by_matching_lemma(self, lemma, label):
+        for t in self.tokens:
+            if t.token.lemma_ == lemma:
+                t.label = 'B-{}'.format(label)
+            
+    def assign_attribute_to_tokens(self, start, end, label, attribute):
+        tokens = self.find_tokens(start, end)
+        for n, token in enumerate(tokens):
+            token.set_attribute(label, attribute)
+            
+    def get_token_features_labels(self):
+        features = []
+        labels = []
+        
+        for sentence in self.token_sentences:
+            sentence_features = []
+            sentence_labels = []
+            
+            for token in sentence:
+                sentence_features.append(token.get_feature_vector())
+                sentence_labels.append(token.label)
+                
+            features.append(sentence_features)
+            labels.append(sentence_labels)
+            
+        return features, labels
+    
+    def get_token_features_attributes(self, label):
+        features = []
+        labels = []
+        
+        for sentence in self.token_sentences:
+            sentence_features = []
+            sentence_labels = []
+            
+            for token in sentence:
+                sentence_features.append(token.get_feature_vector())
+                if label in token.attributes:
+                    sentence_labels.append(token.attributes[label])
+                else:
+                    sentence_labels.append('O')
+                
+            features.append(sentence_features)
+            labels.append(sentence_labels)
+            
+        return features, labels    
+    
+    def get_gold_relation_feature_labels(self):
+        features = []
+        labels = []
+        for r in self.relations:
+            feat = r.get_feature_vector()
+            label = r.label
+            
+            features.append(feat)
+            labels.append(label)
+            
+        return features, labels
+    
+    def get_candidate_relation_feature_labels(self):
+        features = []
+        labels = []
+        
+        candidate_relations = self.get_candidate_relations()
+        for r in candidate_relations:
+            feat = r.get_feature_vector()
+            label = r.label
+            
+            features.append(feat)
+            labels.append(label)
+            
+        return features, labels     
+                        
+    
+    def get_tokens_with_label(self, label):
+
+        blabel = "B-{}".format(label)
+        ilabel = 'I-{}'.format(label)
+
+        tokens = []
+        
+        for I in range(len(self.token_sentences)):
+            tokens_ = []        
+            sent_tokens = self.token_sentences[I]
+            sent_labels = [t.label for t in sent_tokens]
+
+            tok_ = []
+            for n,l in enumerate(sent_labels):
+                if l == blabel:
+                    if len(tok_) > 0:
+                        tokens_.append(tok_)
+                    tok_ = [sent_tokens[n]]
+                elif l == ilabel:
+                    tok_.append(sent_tokens[n])
+                else:
+                    if len(tok_)>0:
+                        tokens_.append(tok_)
+                    tok_ = []
+            tokens.append(tokens_)       
+    
+        return tokens 
+    
+    def get_candidate_relations(self):
+        candidate_relations = []
+        
+        characters = self.get_tokens_with_label('Character')
+        places = self.get_tokens_with_label('Place')
+        spatial_signals = self.get_tokens_with_label('Spatial_Signal')
+        say_words = self.get_tokens_with_label('Says')
+        character_lines = self.get_tokens_with_label('Character_Line')
+        
+        for I in range(len(spatial_signals)):
+            for sp in spatial_signals[I]:
+                for ch in characters[I]:
+                    for pl in places[I]:
+                        rel = Relation(ch, pl, sp, self.LCA)
+                        candidate_relations.append(rel)
+                        
+        for I in range(len(say_words)):
+            for sw in say_words[I]:
+                for ch in characters[I]:
+                    for cl in character_lines[I]:
+                        rel = Relation(ch, cl, sw, self.LCA)
+                        candidate_relations.append(rel)
+                        
+        for cr in candidate_relations:
+            for r in self.relations:
+                if cr == r:
+                    cr.label = r.label
+                        
+        return candidate_relations
+    
+    def predict_relations(self, model):
+        relations = self.get_candidate_relations()
+        
+        for n, r in enumerate(relations):
+            f = r.get_feature_vector()
+            label = model.predict([f])[0]
+            if label != 'NONE':
+                r.label = label
+                self.relations.append(r)
+    
+    def __str__(self):
+        return self.text
+
+class Relation:
+    """ relation, has arg1, arg2, trigger as tokens, also label """
+    def __init__(self, arg1, arg2, trigger, lca, label='NONE'):
+        self.arg1 = arg1
+        self.arg2 = arg2
+        self.trigger = trigger
+        self.doc = trigger[0].doc
+        self.LCA = lca
+        self.label = label
+        
+    def __repr__(self):
+        return "<{}| trigger: {}, arg1: {}, arg2: {}>".format(self.label, self.trigger, self.arg1, self.arg2)
+    
+    def __eq__(self, other):
+        return  all([self.arg1[n].text == other.arg1[n].text for n in range(min(len(self.arg1), len(other.arg1)))]) \
+                and all([self.arg2[n].text == other.arg2[n].text for n in range(min(len(self.arg2), len(other.arg2)))]) \
+                and all([self.trigger[n].text == other.trigger[n].text for n in range(min(len(self.trigger), len(other.trigger)))])
+            
+    def get_feature_vector(self):        
+        rf = {}
+
+        arg1 = get_token_head([t.token for t in self.arg1])
+        arg2 = get_token_head([t.token for t in self.arg2])
+        trigger = get_token_head([t.token for t in self.trigger])
+
+        arg1_type = self.arg1[0].label.replace('B-', '')
+        arg2_type = self.arg2[0].label.replace('B-', '')
+    
+        rf['10'] = arg1_type+ '::'+ arg2_type
+
+        if trigger.i < arg1.i:
+            arg1_direction = 'right'
+        if trigger.i > arg1.i:
+            arg1_direction = 'left'
+        
+        if trigger.i < arg2.i:
+            arg2_direction = 'right'
+        if trigger.i > arg2.i:
+            arg2_direction = 'left'        
+                
+        rf['12.1'] = arg1_direction
+        rf['12.2'] = arg2_direction
+        rf['13'] = arg1_direction+ '::'+ arg2_direction
+
+        rf['1'] = trigger.text.lower()
+        rf['2'] = trigger.lemma_
+        rf['3'] = trigger.pos_
+        rf['4'] = rf['2'] + '::' + rf['3']
+        rf['11'] = rf['10'] + '::' + rf['2']
+        rf['14'] = rf['13'] + '::' + rf['2']
+        
+        # RF15
+            
+        for i, token in enumerate([arg1, arg2]):
+            rf['5.{}'.format(i)] = token.text.lower()
+            rf['6.{}'.format(i)] = token.lemma_
+            rf['7.{}'.format(i)] = token.pos_
+            rf['8.{}'.format(i)] = token.lemma_ + '::' + token.pos_
+            rf['9.{}'.format(i)] = arg1_type
+            rf['17.{}'.format(i)] = get_min_dep_path(token.i, trigger.i, self.doc, self.LCA)
+            rf['20'] = len(rf['17.{}'.format(i)].split('::'))
+
+            rf['22.{}'.format(i)] = max(arg1.i, trigger.i) - min(arg1.i, trigger.i)
+            
+            
+    
+            
+        rf['18'] = rf['17.0'] + '::' + rf['17.1']
+        
+        deppath = get_min_dep_path(arg1.i, arg2.i, self.doc, self.LCA)
+        rf['19'] = deppath
+        rf['23'] = rf['22.0'] + rf['22.1']
+
+        return rf
+    
+class Token:
+    """ Named entity, has doc, sent, doc_idx, sent_idx, and label """
+    def __init__(self, token, doc, doc_idx, sent, sent_idx, label='O'):
+        self.token = token
+        self.text = token.text
+        self.doc = doc
+        self.doc_idx = doc_idx
+        self.sent = sent
+        self.sent_idx = sent_idx
+        self.attributes = {}
+        
+        self.label = label
+        self.start = self.token.idx
+        self.end = self.token.idx + len(self.token)
+            
+    def __repr__(self):
+        return "[{} -> {}]".format(repr(self.token), self.label)
+    
+    def set_label(self, label):
+#        print("Token {} label changed to {}".format(self.text, label))
+        self.label = label
+    
+    def set_attribute(self, label, value):
+        self.attributes[label] = value
+    
+    def get_feature_vector(self):
+        
+        def find_ngrams(input_list, n):
+            return zip(*[input_list[i:] for i in range(n)])
+
+        # Stores featuer dictionary
+        feat_dict = {}
+        
+        #1. Create token spans
+        
+        # 5 token span
+        large_span = self.sent[max(0, self.sent_idx - 2):min(len(self.sent), self.sent_idx + 3)]
+        
+        # 3 token span
+        short_span = self.sent[max(0, self.sent_idx - 1):min(len(self.sent), self.sent_idx + 2)]
+        
+        for i, t in enumerate(large_span):
+            feat_dict['F.1_{}'.format(i)] = t.text
+            feat_dict['F.2_{}'.format(i)] = t.lemma_
+            feat_dict['F.3_{}'.format(i)] = t.pos_
+            feat_dict['F.4_{}'.format(i)] = t.ent_type_
+            
+        for i, t in enumerate(short_span):
+            feat_dict['F.5_{}'.format(i)] = "::".join([t.lemma_, t.pos_])
+            feat_dict['F.6_{}'.format(i)] = "::".join([t.ent_type_, t.pos_])
+            
+        ngrams = find_ngrams([t.pos_ for t in large_span], 2) # POS bigrams
+        for i, ng in enumerate(ngrams):
+            feat_dict['F.10_{}'.format(i)] = " ".join(ng)
+                
+        ngrams = find_ngrams([t.text for t in short_span], 2)  # Raw-string bigrams
+        for i, ng in enumerate(ngrams):
+            feat_dict['F.11_{}'.format(i)] = " ".join(ng)                   
+        
+        # Get dependency with head if it exists
+        dirdep, headlemma = get_dep_with_head(self.token)
+        if dirdep is not None:
+            feat_dict['F.7'] = dirdep
+            feat_dict['F.8'] = "::".join([dirdep, headlemma])
+            
+        # Get glove vector
+        vector = self.token.vector
+        for i in range(len(vector)):
+            feat_dict['F.9_{}'.format(i)] = vector[i]            
+            
+            
+        return feat_dict        
+    
+class Character:
+    """ Named Entity consisting of one or more tokens """
+    def __init__(self, name, age='none', gender='none'):
+        self.name = name
+        self.age = age
+        self.gender = gender
+        
+    def __repr__(self):
+        return "<CHARACTER name='{}' age='{}' gender='{}'>".format(self.name, 
+                                                                   self.age, 
+                                                                   self.gender)
+        
+    def __eq__(self, other):
+        return self.name.lower() == other.name.lower()
+    
+class Place:
+    """ Named Entity consisting of one or more tokens """
+    def __init__(self, name):
+        self.name = name
+        
+    def __repr__(self):
+        return "<PLACE name='{}'>".format(self.name)
+    
+    def __eq__(self, other):
+        return self.name.lower() == other.name.lower()
+    
+class Sayword:
+    """ Named Entity consisting of one or more tokens """
+    def __init__(self, name):
+        self.name = name
+        
+    def __repr__(self):
+        return "<SAYWORD name='{}'>".format(self.name)
+    
+    def __eq__(self, other):
+        return self.name.lower() == other.name.lower()
+
+class CharacterLine:
+    """ Named Entity consisting of one or more tokens """
+    def __init__(self, name):
+        self.name = name
+        
+    def __repr__(self):
+        return "<CHARACTER_LINE name='{}'>".format(self.name)
+    
+    def __eq__(self, other):
+        return self.name.lower() == other.name.lower()
+        
+class SpatialSignal:
+    """ Named Entity consisting of one or more tokens """
+    def __init__(self, name):
+        self.name = name
+        
+    def __repr__(self):
+        return "<SPATIAL_SIGNAL name='{}'>".format(self.name)
+    
+    def __eq__(self, other):
+        return self.name.lower() == other.name.lower()
+    
+    
+    
+        
\ No newline at end of file