基于python的stanfordnlp中回指消解

2024-10-06 06:57:21 发布

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我正在尝试做回指解析,下面是我的代码。在

首先,我浏览到下载斯坦福模块的文件夹。然后我在命令提示符下运行命令来初始化stanford nlp模块

java -mx4g -cp "*;stanford-corenlp-full-2017-06-09/*" edu.stanford.nlp.pipeline.StanfordCoreNLPServer -port 9000 -timeout 15000

之后,我用Python执行下面的代码

^{pr2}$

我想把Tom is a smart boy. He know a lot of thing.改成Tom is a smart boy. Tom know a lot of thing.,Python中没有教程或任何帮助。在

我所能做的就是用下面的Python代码进行注释

共指分辨率

output = nlp.annotate(sentence, properties={'annotators':'dcoref','outputFormat':'json','ner.useSUTime':'false'})

通过解析coref

coreferences = output['corefs']

我在JSON下面

coreferences

{u'1': [{u'animacy': u'ANIMATE',
   u'endIndex': 2,
   u'gender': u'MALE',
   u'headIndex': 1,
   u'id': 1,
   u'isRepresentativeMention': True,
   u'number': u'SINGULAR',
   u'position': [1, 1],
   u'sentNum': 1,
   u'startIndex': 1,
   u'text': u'Tom',
   u'type': u'PROPER'},
  {u'animacy': u'ANIMATE',
   u'endIndex': 6,
   u'gender': u'MALE',
   u'headIndex': 5,
   u'id': 2,
   u'isRepresentativeMention': False,
   u'number': u'SINGULAR',
   u'position': [1, 2],
   u'sentNum': 1,
   u'startIndex': 3,
   u'text': u'a smart boy',
   u'type': u'NOMINAL'},
  {u'animacy': u'ANIMATE',
   u'endIndex': 2,
   u'gender': u'MALE',
   u'headIndex': 1,
   u'id': 3,
   u'isRepresentativeMention': False,
   u'number': u'SINGULAR',
   u'position': [2, 1],
   u'sentNum': 2,
   u'startIndex': 1,
   u'text': u'He',
   u'type': u'PRONOMINAL'}],
 u'4': [{u'animacy': u'INANIMATE',
   u'endIndex': 7,
   u'gender': u'NEUTRAL',
   u'headIndex': 4,
   u'id': 4,
   u'isRepresentativeMention': True,
   u'number': u'SINGULAR',
   u'position': [2, 2],
   u'sentNum': 2,
   u'startIndex': 3,
   u'text': u'a lot of thing',
   u'type': u'NOMINAL'}]}

有什么帮助吗?在


Tags: 代码textidnumbertypepositiongendertom
3条回答

这里有一个可能的解决方案,它使用CoreNLP输出的数据结构。提供所有信息。这不是一个完整的解决方案,可能需要扩展来处理所有情况,但这是一个很好的起点。在

from pycorenlp import StanfordCoreNLP

nlp = StanfordCoreNLP('http://localhost:9000')


def resolve(corenlp_output):
    """ Transfer the word form of the antecedent to its associated pronominal anaphor(s) """
    for coref in corenlp_output['corefs']:
        mentions = corenlp_output['corefs'][coref]
        antecedent = mentions[0]  # the antecedent is the first mention in the coreference chain
        for j in range(1, len(mentions)):
            mention = mentions[j]
            if mention['type'] == 'PRONOMINAL':
                # get the attributes of the target mention in the corresponding sentence
                target_sentence = mention['sentNum']
                target_token = mention['startIndex'] - 1
                # transfer the antecedent's word form to the appropriate token in the sentence
                corenlp_output['sentences'][target_sentence - 1]['tokens'][target_token]['word'] = antecedent['text']


def print_resolved(corenlp_output):
    """ Print the "resolved" output """
    possessives = ['hers', 'his', 'their', 'theirs']
    for sentence in corenlp_output['sentences']:
        for token in sentence['tokens']:
            output_word = token['word']
            # check lemmas as well as tags for possessive pronouns in case of tagging errors
            if token['lemma'] in possessives or token['pos'] == 'PRP$':
                output_word += "'s"  # add the possessive morpheme
            output_word += token['after']
            print(output_word, end='')


text = "Tom and Jane are good friends. They are cool. He knows a lot of things and so does she. His car is red, but " \
       "hers is blue. It is older than hers. The big cat ate its dinner."

output = nlp.annotate(text, properties= {'annotators':'dcoref','outputFormat':'json','ner.useSUTime':'false'})

resolve(output)

print('Original:', text)
print('Resolved: ', end='')
print_resolved(output)

这将产生以下输出:

^{pr2}$

正如你所看到的,当代词有一个句子首字母(标题大小写)先行词时,这个解决方案并不处理大小写的更正(“大猫咪”而不是最后一个句子中的“大猫”)。这取决于先行词的类别-普通名词先行词需要小写,而专有名词先行词则不需要。 其他一些特殊的处理可能是必要的(比如我测试句子中的所有格)。它还假定您不希望重用原始输出标记,因为它们是由此代码修改的。一种解决方法是复制原始数据结构或创建一个新属性,并相应地更改print_resolved函数。 纠正任何分辨率错误也是另一个挑战!在

我也有类似的问题。在尝试了核心nlp之后,我用neural coref解决了这个问题。通过使用以下代码,您可以轻松地通过neural coref完成这项工作:

导入空间

nlp=空间负荷('en'u coref'u md')

doc=nlp(只有满足以下所有条件时,u’电话区号才有效。不能为空。它应该是数字。不能小于200。最小位数应为3')在

打印(doc.\uE.coref_群集)

打印(已解决文档核心问题)

上述代码的输出为: [电话区号:[电话区号,It,It,It]]

电话区号只有在满足以下所有条件时才有效。电话区号不能为空。电话区号应为数字。电话区号不能小于200。最小位数应为3。在

为此,您将需要有空间,以及英国模型,可以是en_coref_md或en_coref_lg或en_coref_sm。您可以参考以下链接以获得更好的解释:

https://github.com/huggingface/neuralcoref

from stanfordnlp.server import CoreNLPClient
from nltk import tokenize

client = CoreNLPClient(annotators=['tokenize','ssplit', 'pos', 'lemma', 'ner', 'parse', 'coref'], memory='4G', endpoint='http://localhost:9001')

def pronoun_resolution(text):

    ann = client.annotate(text)
    modified_text = tokenize.sent_tokenize(text)

    for coref in ann.corefChain:

        antecedent = []
        for mention in coref.mention:
            phrase = []
            for i in range(mention.beginIndex, mention.endIndex):
                phrase.append(ann.sentence[mention.sentenceIndex].token[i].word)
            if antecedent == []:
                antecedent = ' '.join(word for word in phrase)
            else:
                anaphor = ' '.join(word for word in phrase)
                modified_text[mention.sentenceIndex] = modified_text[mention.sentenceIndex].replace(anaphor, antecedent)

    modified_text = ' '.join(modified_text)

    return modified_text

text = 'Tom is a smart boy. He knows a lot of things.'
pronoun_resolution(text)

输出:“汤姆是个聪明的男孩。汤姆知道很多事情

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