中文文本摘要/关键词提取
从中文文本中提取摘要及关键词,并对算法时间复杂度进行了修改,计算图最大权节点的时间复杂度由o(n^2)降低到了o(n)。在有限的测试文本上(10篇文章),其运行速度相比于textrank4zh这个包快了8倍。算法原理见知乎文章
Numpy>=1.14.5 gensim>=3.5.0 pip install FastTextRank==1.1
详情请见./FastTextRank/test文件夹
KeyWord.py:提取关键字示例
Sentence.py:提取摘要示例
如有优化点,欢迎pull requests
如有问题,欢迎提issues
Extract abstracts and keywords from Chinese text, use optimized iterative algorithms to improve running speed, and selectively use word vectors to improve accuracy.
PageRank is a website page ranking algorithm from Google.
PageRank was originally used to calculate the importance of web pages. The entire www can be seen as a directed graph, and the node is a web page.
This algorithm can caculate all node's importance by their connections.
* My algorithm changed the iterative algorithm to make the algorithm much faster, it costs 10ms per article, on the mean while TextRank4ZH costs 80ms on my data.
* My algorithm also use word2vec to make the abstract more accurate, but it will cost more time to run the algorithm. Using word2vec costs 40ms per article on the same traning data.