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hmm_ner_organization's Introduction

基于HMM模型的机构名实体识别

1.环境依赖

  • python 2.7
  • jieba (可选)

2.算法说明

参考《基于角色标注的中文机构名识别》论文,结合HanLP提供的针对机构名的HMM语料,实现了基于HMM模型的机构名实体识别算法。

详细说明文档,可前往我的博客围观:用隐马尔可夫模型(HMM)做命名实体识别——NER系列(二)

3.使用说明

首先,运行以下脚本:

python generate_data.py

会在./data下生成transition_probability.txtemit_probability.txt以及initial_vector.txt

然后,运行:

python OrgRecognize.py

就可以了,不出意外,“中海油集团在哪里”这句话,会识别出“中海油集团”这个机构实体。

4.参考资料

  • 张华平, 刘群. 基于角色标注的**人名自动识别研究[J]. 计算机学报, 2004, 27(1):85-91.
  • 俞鸿魁, 张华平, 刘群. 基于角色标注的中文机构名识别[C]// Advances in Computation of Oriental Languages--Proceedings of the, International Conference on Computer Processing of Oriental Languages. 2003.
  • 俞鸿魁, 张华平, 刘群,等. 基于层叠隐马尔可夫模型的中文命名实体识别[J]. 通信学报, 2006, 27(2):87-94.
  • 码农场文章:层叠HMM-Viterbi角色标注模型下的机构名识别

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hmm_ner_organization's Issues

generate_datas.py有一处错误?

def generate_emit_probability(initial_freq)函数中,
result.append([tmp_list[0],observed_state,float(tags_and_freq[1])/initial_freq[tmp_list[0]]]) 应该改为
result.append([tmp_list[0],observed_state,float(tmp_list[1])/initial_freq[tmp_list[0]]]) 吧?

generate_datas.py中有一个错误

python generate_datas.py
Traceback (most recent call last):
File "generate_datas.py", line 91, in
genertate_initial_vector(hidden_states)
File "generate_datas.py", line 20, in genertate_initial_vector
the_hidden_states[tmp_list[0]] += eval(tmp_list[1])
KeyError: '2'

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