在负面flair情绪分析中添加'-‘符号

Question

我正在为股票市场分析创建一个情绪分析代码。这是代码的核心：

import flair
flair_sentiment = flair.models.TextClassifier.load('en-sentiment')
columns = ['ticker', 'date', 'time', 'headline']
parsed_and_scored_news = pd.DataFrame(parsed_news, columns=columns)
sentiment = []
for head in parsed_and_scored_news['headline']:
    s = flair.data.Sentence(head)
    flair_sentiment.predict(s)
    total_sentiment = s.labels
    sentiment.append(total_sentiment)
    scores_df = pd.DataFrame(sentiment)
    parsed_and_scored_news = parsed_and_scored_news.join(scores_df, rsuffix='_right')
    
# Convert the date column from string to datetime
parsed_and_scored_news['date'] = pd.to_datetime(parsed_and_scored_news.date).dt.dateparsed_and_scored_news.head()

将生成以下输出：

    ticker     date      time              headline                                    0
0   AMZN    2021-03-26  02:37PM Tech stocks are going to do vey well going for...   POSITIVE (0.9986)
1   AMZN    2021-03-26  01:17PM Amazon mocked idea its drivers urinated in bot...   NEGATIVE (0.9855)
2   AMZN    2021-03-26  01:11PM ThredUp CEO on IPO day: Dont tax resale and Am...   NEGATIVE (0.6743)
3   AMZN    2021-03-26  12:54PM Why this retailer is seeing a triple-digit sal...   POSITIVE (0.9597)
4   AMZN    2021-03-26  12:07PM How to secure your smart home camera                POSITIVE (0.9981)

因为我想将数据输入到ML模型中，所以我需要分数是数字。我知道使用probability = sentence.labels[0].score只能给出分数，但这意味着没有办法将一个语句是否是肯定的归类为否定的。有没有办法在被归类为负分的分数后面加一个‘-’(否定)符号？例如- NEGATIVE (0.9855) = -9855。这将确保信息既是数字的也是有用的。

Answer 1

这段代码对我来说很有效：

sentiment = []
sentiment_score =[]
for head in parsed_and_scored_news['headline']:
    s = flair.data.Sentence(head)
    flair_sentiment.predict(s)
    total_sentiment = s.labels[0].value
    total_sentiment_score = s.labels[0].score
    sentiment.append(total_sentiment)
    sentiment_score.append(total_sentiment_score)
scores_df = pd.DataFrame(sentiment)
scores_df_1 = pd.DataFrame(sentiment_score)
parsed_and_scored_news = parsed_and_scored_news.join(scores_df, rsuffix='_right')
parsed_and_scored_news = parsed_and_scored_news.join(scores_df_1, rsuffix='_right')

st = parsed_and_scored_news['0_right'].tolist()
count = -1
for item in parsed_and_scored_news['0']:
    count = count+1
    if item == 'NEGATIVE':
        lst[count] = 0-lst[count]
    
scores_final = pd.DataFrame(lst)
parsed_and_scored_news = parsed_and_scored_news.join(scores_final, rsuffix='_final')