如何使用从python

Question

我想从维基百科摘要页面提取数据＆＃34;机器学习＆＃34;然后使用该数据构建带有gensim库的word2vec模型。

所以，首先我得到＆＃34;机器学习＆＃34;的维基总结。 （Wikipedia API for Python）：

sentences = wikipedia.summary("machine learning")

然后我创建模型：

model = gensim.models.Word2Vec(sentences, min_count=2, size=50, window=4)

问题在于，如果我打印词汇表键，我会得到一个字符列表而不是一个单词列表。以下是我用来打印词汇表键的代码：

print list(model.vocab.keys())

我哪里错了？

我在这里粘贴了完整的代码：

import wikipedia, gensim.models
sentences = wikipedia.summary("machine learning")
model = gensim.models.Word2Vec(sentences, min_count=2, size=50, window=4)
print list(model.vocab.keys())

Answer 1

你遗漏了以下两件事：

1. 将unicode转换为UTF-8
2. 使用 gensim.models.word2vec.LineSentence 制作gensim对象

以下是完整的python脚本：

# libraries
from gensim.models import Word2Vec
from gensim.models.word2vec import LineSentence
import wikipedia

# word2vec model parameters
min_count = 2
size = 50
window = 4

# getting "machine learning" summary from wikipedia
summary = wikipedia.summary("machine learning")

# Changing unicode to UTF-8 and writing summary to a text file
text = summary.encode("UTF-8")
filewriter = open("machine_learning.txt", "w")
filewriter.write(text)
filewriter.close()

# reading machine_learning.txt file by using LineSentence
sentences = LineSentence("machine_learning.txt")

# making gensim model and training it on sentences
model = Word2Vec(sentences, min_count = min_count, size = size, window = window)

# printing model's vocablury
print(model.vocab.keys())

# printing vector for 'learning' word
print(model["learning"])

希望它有帮助..！