stanford openie python

python for Stanford Openie（Macos/Linux）

支持最新的Corenlp库4.5.3（截至2023-03-10）。

开放信息提取（打开IE）是指从纯文本中提取结构化关系三元，因此这些关系的模式无需提前指定。例如，巴拉克·奥巴马（Barack Obama）出生于夏威夷，将创建一个三重(Barack Obama; was born in; Hawaii) ，对应于“出生于”的开放式领域关系。 Corenlp是本文所述的开放IE系统的Java实现：

更多信息可以在此处找到。 Openie库仅提供英文。

安装

您需要安装Python3和Java（JRE）。 Java由Corenlp库使用。

确保首先安装Java。

java -version

然后安装自由。

pip install stanford_openie

例子

 from openie import StanfordOpenIE

# https://stanfordnlp.github.io/CoreNLP/openie.html#api
# Default value of openie.affinity_probability_cap was 1/3.
properties = {
    'openie.affinity_probability_cap' : 2 / 3 ,
}

with StanfordOpenIE ( properties = properties ) as client :
    text = 'Barack Obama was born in Hawaii. Richard Manning wrote this sentence.'
    print ( 'Text: %s.' % text )
    for triple in client . annotate ( text ):
        print ( '|-' , triple )

    graph_image = 'graph.png'
    client . generate_graphviz_graph ( text , graph_image )
    print ( 'Graph generated: %s.' % graph_image )

    with open ( 'corpus/pg6130.txt' , encoding = 'utf8' ) as r :
        corpus = r . read (). replace ( ' n ' , ' ' ). replace ( ' r ' , '' )

    triples_corpus = client . annotate ( corpus [ 0 : 5000 ])
    print ( 'Corpus: %s [...].' % corpus [ 0 : 80 ])
    print ( 'Found %s triples in the corpus.' % len ( triples_corpus ))
    for triple in triples_corpus [: 3 ]:
        print ( '|-' , triple )
    print ( '[...]' )

预期输出

 |- {'subject': 'Barack Obama', 'relation': 'was', 'object': 'born'}
|- {'subject': 'Barack Obama', 'relation': 'was born in', 'object': 'Hawaii'}
|- {'subject': 'Richard Manning', 'relation': 'wrote', 'object': 'sentence'}
Graph generated: graph.png.
Corpus: According to this document, the city of Cumae in Ćolia, was, at an early period [...].
Found 1664 triples in the corpus.
|- {'subject': 'city', 'relation': 'is in', 'object': 'Ćolia'}
|- {'subject': 'Menapolus', 'relation': 'son of', 'object': 'Ithagenes'}
|- {'subject': 'Menapolus', 'relation': 'was Among', 'object': 'immigrants'}

它将在graph.png中生成一个graphViz点：

注意：确保事先安装了GraphViz。尝试运行dot命令以查看是否是这种情况。如果没有，如果您在Ubuntu上运行，请运行sudo apt-get install graphviz 。在MacOS上，它是brew install graphviz 。

参考

• https://www.kaggle.com/asitang/stanford-resources
• https://www.kaggle.com/geofila/corenlp?select=stanford-corenlp-full-2018-10-05

引用

 @misc{StanfordOpenIEWrapper,
  author = {Philippe Remy},
  title = {Python wrapper for Stanford OpenIE},
  year = {2020},
  publisher = {GitHub},
  journal = {GitHub repository},
  howpublished = {url{https://github.com/philipperemy/Stanford-OpenIE-Python}},
}

贡献者