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nodejieba

v2.6.0

Published

chinese word segmentation for node

Downloads

62,086

Readme

Build Status Financial Contributors on Open Collective Author Donate Platform Performance License NpmDownload Status NPM Version Code Climate Coverage Status


NodeJieba "结巴"分词的Node.js版本 English

logo

介绍

NodeJieba是"结巴"中文分词的 Node.js 版本实现, 由CppJieba提供底层分词算法实现, 是兼具高性能和易用性两者的 Node.js 中文分词组件。

特点

  • 词典载入方式灵活,无需配置词典路径也可使用,需要定制自己的词典路径时也可灵活定制。
  • 底层算法实现是C++,性能高效。
  • 支持多种分词算法,各种分词算法见CppJieba的README.md介绍。
  • 支持动态补充词库。

对实现细节感兴趣的请看如下博文:

下载

npm install nodejieba

因为npm速度很慢而且经常因为墙的原因出现莫名其妙的问题,可以试试使用cnpm,命令如下:

npm install nodejieba --registry=https://registry.npm.taobao.org --nodejieba_binary_host_mirror=https://npm.taobao.org/mirrors/nodejieba

用法

var nodejieba = require("nodejieba");
var result = nodejieba.cut("南京市长江大桥");
console.log(result);
//["南京市","长江大桥"]

更详细的其他用法请看 test/demo.js

词典载入可灵活配置

如果没有主动调用词典函数时, 则会在第一次调用cut等功能函数时,自动载入默认词典。

如果要主动触发词典载入,则使用以下函数主动触发。

nodejieba.load();

以上用法会自动载入所有默认词典, 如果需要载入自己的词典,而不是默认词典。 比如想要载入自己的用户词典,则使用以下函数:

nodejieba.load({
  userDict: './test/testdata/userdict.utf8',
});

字典载入函数load的参数项都是可选的, 如果没有对应的项则自动填充默认参数。 所以上面这段代码和下面这代代码是等价的。

nodejieba.load({
  dict: nodejieba.DEFAULT_DICT,
  hmmDict: nodejieba.DEFAULT_HMM_DICT,
  userDict: './test/testdata/userdict.utf8',
  idfDict: nodejieba.DEFAULT_IDF_DICT,
  stopWordDict: nodejieba.DEFAULT_STOP_WORD_DICT,
});

词典说明

  • dict: 主词典,带权重和词性标签,建议使用默认词典。
  • hmmDict: 隐式马尔科夫模型,建议使用默认词典。
  • userDict: 用户词典,建议自己根据需要定制。
  • idfDict: 关键词抽取所需的idf信息。
  • stopWordDict: 关键词抽取所需的停用词列表。

词性标注

var nodejieba = require("nodejieba");
console.log(nodejieba.tag("红掌拨清波"));
//[ { word: '红掌', tag: 'n' },
//  { word: '拨', tag: 'v' },
//  { word: '清波', tag: 'n' } ]

更详细的其他用法请看 test/demo.js

关键词抽取

var nodejieba = require("nodejieba");
var topN = 4;
console.log(nodejieba.extract("升职加薪,当上CEO,走上人生巅峰。", topN));
//[ { word: 'CEO', weight: 11.739204307083542 },
//  { word: '升职', weight: 10.8561552143 },
//  { word: '加薪', weight: 10.642581114 },
//  { word: '巅峰', weight: 9.49395840471 } ]

console.log(nodejieba.textRankExtract("升职加薪,当上CEO,走上人生巅峰。", topN));
//[ { word: '当上', weight: 1 },
//  { word: '不用', weight: 0.9898479330698993 },
//  { word: '多久', weight: 0.9851260595435759 },
//  { word: '加薪', weight: 0.9830464899847804 },
//  { word: '升职', weight: 0.9802777682279076 } ]

更详细的其他用法请看 test/demo.js

测试

以下版本中测试通过:

  • node v10
  • node v12
  • node v14
  • node v15

应用

相关项目

性能评测

性能杠杠的,应该是目前性能最好的 Node.js 中文分词库,没有之一。 详见: Jieba中文分词系列性能评测

在线演示

http://cppjieba-webdemo.herokuapp.com/ (chrome is suggested)

NodeJieba 在 Windows 上面的一系列安装问题和斗争成功过程参考

客服

Email: [email protected]

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