我创建了一个python脚本来提取命名实体,如下所示:

# set java path
java_path = r'C:/Program Files/Java/jre1.8.0_161/bin/java.exe'

os.environ['JAVAHOME'] = java_path

# initialize NER tagger
sn = StanfordNERTagger('C:/Users/Parag/Documents/stanford-ner-2018-10-16/stanford-ner-2018-10-16/classifiers/english.all.3class.distsim.crf.ser.gz',
                       path_to_jar='C:/Users/Parag/Documents/stanford-ner-2018-10-16/stanford-ner-2018-10-16/stanford-ner.jar')

# tag named entities
ner_tagged_sentences = [sn.tag(sent.split()) for sent in dataset_unseen['Text']]


dataset_unseen['Text'] = dataset_unseen.apply(Detectner,axis=1)


# extract all named entities
named_entities = []

for sentence in ner_tagged_sentences:
    temp_entity_name = ''
    temp_named_entity = None

    for term, tag in sentence:
        if tag != 'O':
            temp_entity_name = ' '.join([temp_entity_name, term]).strip()
            temp_named_entity = (temp_entity_name, tag)

        else:
            if temp_named_entity:
                named_entities.append(temp_named_entity)
                temp_entity_name = ''
                temp_named_entity = None


entity_frame = pd.DataFrame(named_entities, columns=['Entity Name', 'Entity Type'])
entity_frame.head()


**输出**

 Entity Name      Entity Type       Frequency

 ABC Farms        ORGANIZATION          5

 Freddy Hill Lane  ORGANIZATION          3

 North Lane Thames ORGANIZATION          2


现在,我想用“ ######”之类的样式掩盖这些命名实体,以通过隐藏客户敏感信息来遵循GDPR法规。

我尝试过类似的选项:


在原始数据帧上申请循环-检查命名实体数据帧中存在的命名实体的文本-用'#####'屏蔽命名实体。
定义一个用于在文本中屏蔽命名实体的函数:


def Detectner(row):
    ner_tagged_sentences = [sn.tag(sent.split()) for sent in row['Text']]
    results = ner_tagged_sentences.sub('**********',row['Text'])
    return results


dataset_unseen['Text'] = dataset_unseen.apply(Detectner,axis=1)

但是我得到以下错误:

AttributeError: ("'list' object has no attribute 'sub'", 'occurred at index 0')

如何提取和屏蔽文本中的命名实体。此代码的任何改进都受到高度赞赏!

最佳答案

标记句子时,您将在该行中创建一个list

ner_tagged_sentences = [sn.tag(sent.split()) for sent in row['Text']]


typener_tagged_sentenceslist,它没有sub方法。

您可以尝试多种方法来实现使文档匿名的目标:


用非O标签将令牌替换为某些令牌(令牌级别)
直接在文档中替换命名实体文本(字符串级)


似乎您正在尝试执行数字(2)

07-26 03:19