如何在数据框中添加具有计算值的另一列

Question

我有一个新闻数据集，并且正在承载NLP。 我现在有2个函数，一个函数计算相似性，另一个函数计算情感，这两个函数都从数据框中获取输入，我想做的就是在数据帧中创建另一列，并使用计算出的值来计算相似度和情感（位置/ NEG）

功能如下

i=0
for i in range(0, 9):
    text1 = df.description[i]
    text2 = df.title[i]


    vector1 = similarity.text_to_vector(text1)
    vector2 = similarity.text_to_vector(text2)

    token1 = similarity.tokenize(text1)
    token2 = similarity.tokenize(text2)

    jaccard = similarity.jaccard_similarity(token1,token2)
    print ('Jaccard Similarity:', jaccard)

    i=i+1

输出：

('Jaccard Similarity:', 0.07142857142857142)
('Jaccard Similarity:', 0.125)
('Jaccard Similarity:', 0.03225806451612903)
('Jaccard Similarity:', 0.07692307692307693)
('Jaccard Similarity:', 0.2)
('Jaccard Similarity:', 0.07407407407407407)
('Jaccard Similarity:', 0.12)
('Jaccard Similarity:', 0.043478260869565216)
('Jaccard Similarity:', 0.0)

码：

i=0
for i in range(0, 9):
    blob = TextBlob(df.description[i], analyzer=NaiveBayesAnalyzer())
    y = blob.sentiment.classification
    print ('Result', y)
    i=i+1

输出：

('Result', 'pos')
('Result', 'neg')
('Result', 'pos')
('Result', 'pos')
('Result', 'pos')
('Result', 'neg')
('Result', 'pos')
('Result', 'pos')
('Result', 'neg')

Answer 1

这将解决您的问题

def jaccard(text1,text2):
    vector1 = similarity.text_to_vector(text1)
    vector2 = similarity.text_to_vector(text2)

    token1 = similarity.tokenize(text1)
    token2 = similarity.tokenize(text2)

    jaccard = similarity.jaccard_similarity(token1,token2)
    return jaccard

def result(t1):
    blob = TextBlob(t1, analyzer=NaiveBayesAnalyzer())
    y = blob.sentiment.classification
    return y

df['result'] = df['description'].map(lambda x: result(x))

df['jaccard'] = df.apply(lambda x: lambda x : jaccard(x['description'],x['title']))