你能猜出是哪種語言嗎？

Python 情感分析

Violeta Misheva

Data Scientist

在 Python 判斷字串語言

from langdetect import detect_langs 
foreign = 'Este libro ha sido uno de los mejores libros que he leido.'

detect_langs(foreign)

[es:0.9999945352697024]

欄位的語言偵測

問題：偵測每個字串的語言，並將最可能的語言存到新欄位

from langdetect import detect_langs 
reviews = pd.read_csv('product_reviews.csv')

reviews.head()

Amazon 產品評論的前 5 列

建立語言特徵

languages = []

for row in range(len(reviews)):
    languages.append(detect_langs(reviews.iloc[row, 1]))

languages
[it:0.9999982541301151],
[es:0.9999954153640488],
[es:0.7142833997345875, en:0.2857160465706441],
[es:0.9999942365605781],
[es:0.999997956049055] ...

建立語言特徵

# Transform the first list to a string and split on a colon
str(languages[0]).split(':') 
['[es', '0.9999954153640488]']

str(languages[0]).split(':')[0]
'[es'

str(languages[0]).split(':')[0][1:]
'es'

建立語言特徵

languages = [str(lang).split(':')[0][1:] for lang in languages]

reviews['language'] = languages

一起來練習吧！

Python 情感分析