如何修复 LDA 模型一致性分数运行时错误?

How to fix LDA model coherence score runtime Error?

文本='Alice is a student.She likes studying.Teachers are giving a lot of homewok.'

我正在尝试从具有连贯性的简单文本(如上)获取主题 score.This 是我的 LDA 模型:

id2word = corpora.Dictionary(data_lemmatized)
texts = data_lemmatized
corpus = [id2word.doc2bow(text) for text in texts]

lda_model = gensim.models.ldamodel.LdaModel(corpus=corpus,
                                           id2word=id2word,
                                           num_topics=5, 
                                           random_state=100,
                                           update_every=1,
                                           chunksize=100,
                                           passes=10,
                                           alpha='auto',
                                           per_word_topics=True)
# Print the Keyword in the 10 topics
pprint(lda_model.print_topics())
doc_lda = lda_model[corpus]

当我尝试 运行 这个一致性模型时:

coherence_model_lda = CoherenceModel(model=lda_model, texts=data_lemmatized, dictionary=id2word, 
coherence='c_v')
coherence_lda = coherence_model_lda.get_coherence()
print('\nCoherence Score: ', coherence_lda)

我应该得到这个输出之王->一致性分数:0.532947587081

我收到这个错误: 引发 RuntimeError(''' 运行时错误: 已尝试在 当前进程已完成引导阶段。

    This probably means that you are not using fork to start your
    child processes and you have forgotten to use the proper idiom
    in the main module:

        if __name__ == '__main__':
            freeze_support()
            ...

    The "freeze_support()" line can be omitted if the program
    is not going to be frozen to produce an executable.

我应该怎么做才能解决这个问题?

我遇到过同样的问题。在 if__name__==main" 中添加 'Coherence Model' 解决了我的问题。

if __name__ == "__main__":

     coherence_model_lda = CoherenceModel(model=lda_model, texts=data_lemmatized, 
                                                          dictionary=id2word, 
                                                              coherence='c_v')
     coherence_lda = coherence_model_lda.get_coherence()
     print('\nCoherence Score: ', coherence_lda)

我在 运行 gensim Nmf 时遇到了同样的问题,解决方法是将 coherence='c_v' 更改为 coherence='u_mass'

您可以毫无问题地使用 coherence='c_v'。 我的回答与 AKHILA 非常相似。但是我在主进程中调用 freeze_support() 并在支持 Windows.

的情况下启动该方法

从头考虑结构:

# imports
from multiprocessing import Process, freeze_support
import ...

# general constants and variables
...

# functions definition
def ...
...

def ...
...

# main function
def principal(): # can be another name
...
...

if __name__ == '__main__':
  freeze_support()
  Process(target=main).start()