“词典”中Vader情感分析结果的排序

Question

是否有一种常用的方法来对字典中的多个Vader情感分析结果进行排序

我正在尝试按“复合”Vader情感分析结果在“评论词典”中进行排序。。

我刚开始学习nlp和情感分析，到目前为止，我的第一个项目95%都是学习书籍、教程和这里。

我希望排序，最近的分数，5个整体情感分数，，在一大组多字典的结果中特定的一个。

我尝试的可能也是因为打印它是一个字符串，我想我需要把它转换成字符串或对象，只是不确定接下来的步骤，我认为我可能需要遍历字典或转换字典。任何指示都将不胜感激。

newlist = sorted(review, key=lambda k: k['compound']) 

​

​

我也试过

from operator import itemgetter
newlist = sorted(review, key=itemgetter('compound'))

​

​

Vader结果是从字典.中打印出来的

s = pprint.pformat(review)
print(s)

--这是结果的格式，我认为这是标准输出

 'america-reviews': "Overall sentiment dictionary is : {'neg': 0.051, 'neu': "
                    "0.632, 'pos': 0.316, 'compound': 1.0}, sentence was rated "
                    'as 5.1% Negative, sentence was rated as 63.2% Neutral, '
                    'sentence was rated as 31.6% Positive, Sentence Overall '
                    'Rated As Positive',
 'amygrant-reviews': "Overall sentiment dictionary is : {'neg': 0.022, 'neu': "
                     "0.734, 'pos': 0.244, 'compound': 0.9998}, sentence was "
                     'rated as 2.1999999999999997% Negative, sentence was '
                     'rated as 73.4% Neutral, sentence was rated as 24.4% '
                     'Positive, Sentence Overall Rated As Positive',
 'andygarcia-reviews': "Overall sentiment dictionary is : {'neg': 0.0, 'neu': "
                       "0.955, 'pos': 0.045, 'compound': 0.8419}, sentence was "
                       'rated as 0.0% Negative, sentence was rated as 95.5% '
                       'Neutral, sentence was rated as 4.5% Positive, Sentence '
                       'Overall Rated As Positive',
 'annemurray-reviews': "Overall sentiment dictionary is : {'neg': 0.02, 'neu': "
                       "0.769, 'pos': 0.211, 'compound': 0.9986}, sentence was "
                       'rated as 2.0% Negative, sentence was rated as 76.9% '
                       'Neutral, sentence was rated as 21.099999999999998% '
                       'Positive, Sentence Overall Rated As Positive',
 'annielennox-reviews': "Overall sentiment dictionary is : {'neg': 0.03, "
                        "'neu': 0.717, 'pos': 0.254, 'compound': 0.9999}, "
                        'sentence was rated as 3.0% Negative, sentence was '
                        'rated as 71.7% Neutral, sentence was rated as 25.4% '
                        'Positive, Sentence Overall Rated As Positive',
 'artgarfunkel-reviews': "Overall sentiment dictionary is : {'neg': 0.056, "
                         "'neu': 0.642, 'pos': 0.302, 'compound': 1.0}, "
                         'sentence was rated as 5.6000000000000005% Negative, '
                         'sentence was rated as 64.2% Neutral, sentence was '
                         'rated as 30.2% Positive, Sentence Overall Rated As '
                         'Positive',
 'bangles-reviews': "Overall sentiment dictionary is : {'neg': 0.054, 'neu': "
                    "0.733, 'pos': 0.213, 'compound': 0.9998}, sentence was "
                    'rated as 5.4% Negative, sentence was rated as 73.3% '
                    'Neutral, sentence was rated as 21.3% Positive, Sentence '
                    'Overall Rated As Positive',
 'barbrastriesand-reviews': "Overall sentiment dictionary is : {'neg': 0.014, "
                            "'neu': 0.815, 'pos': 0.171, 'compound': 0.9982}, "
                            'sentence was rated as 1.4000000000000001% '
                            'Negative, sentence was rated as 81.5% Neutral, '
                            'sentence was rated as 17.1% Positive, Sentence '
                            'Overall Rated As Positive',
 'barrymanilow-reviews': "Overall sentiment dictionary is : {'neg': 0.041, "
                         "'neu': 0.647, 'pos': 0.313, 'compound': 1.0}, "
                         'sentence was rated as 4.1000000000000005% Negative, '
                         'sentence was rated as 64.7% Neutral, sentence was '
                         'rated as 31.3% Positive, Sentence Overall Rated As '
                         'Positive',
 'beachboys-reviews': "Overall sentiment dictionary is : {'neg': 0.016, 'neu': "
                      "0.906, 'pos': 0.078, 'compound': 0.945}, sentence was "
                      'rated as 1.6% Negative, sentence was rated as '
                      '90.60000000000001% Neutral, sentence was rated as 7.8% '
                      'Positive, Sentence Overall Rated As Positive',
 'belindacarlisle-reviews': "Overall sentiment dictionary is : {'neg': 0.046, "
                            "'neu': 0.756, 'pos': 0.197, 'compound': 0.9987}, "
                            'sentence was rated as 4.6% Negative, sentence was '
                            'rated as 75.6% Neutral, sentence was rated as '
                            '19.7% Positive, Sentence Overall Rated As '
                            'Positive',
 'bernadettepeters-reviews': "Overall sentiment dictionary is : {'neg': 0.02, "
                             "'neu': 0.753, 'pos': 0.227, 'compound': 0.9992}, "
                             'sentence was rated as 2.0% Negative, sentence '
                             'was rated as 75.3% Neutral, sentence was rated '
                             'as 22.7% Positive, Sentence Overall Rated As '
                             'Positive',
 'bethhart-reviews': "Overall sentiment dictionary is : {'neg': 0.041, 'neu': "
                     "0.592, 'pos': 0.366, 'compound': 1.0}, sentence was "
                     'rated as 4.1000000000000005% Negative, sentence was '
                     'rated as 59.199999999999996% Neutral, sentence was rated '
                     'as 36.6% Positive, Sentence Overall Rated As Positive',
 'bettemidler-reviews': "Overall sentiment dictionary is : {'neg': 0.043, "
                        "'neu': 0.635, 'pos': 0.322, 'compound': 0.9999}, "
                        'sentence was rated as 4.3% Negative, sentence was '
                        'rated as 63.5% Neutral, sentence was rated as 32.2% '
                        'Positive, Sentence Overall Rated As Positive',
 'bjork-reviews': "Overall sentiment dictionary is : {'neg': 0.042, 'neu': "
                  "0.696, 'pos': 0.262, 'compound': 1.0}, sentence was rated "
                  'as 4.2% Negative, sentence was rated as 69.6% Neutral, '
                  'sentence was rated as 26.200000000000003% Positive, '
                  'Sentence Overall Rated As Positive',
 'bluemangroup-reviews': "Overall sentiment dictionary is : {'neg': 0.047, "
                         "'neu': 0.726, 'pos': 0.227, 'compound': 0.9999}, "
                         'sentence was rated as 4.7% Negative, sentence was '
                         'rated as 72.6% Neutral, sentence was rated as 22.7% '
                         'Positive, Sentence Overall Rated As Positive',
 'bluetravelers-reviews': "Overall sentiment dictionary is : {'neg': 0.0, "
                          "'neu': 0.914, 'pos': 0.086, 'compound': 0.9455}, "
                          'sentence was rated as 0.0% Negative, sentence was '
                          'rated as 91.4% Neutral, sentence was rated as 8.6% '
                          'Positive, Sentence Overall Rated As Positive',
 'bobbyvinton-reviews': "Overall sentiment dictionary is : {'neg': 0.0, 'neu': "
                        "0.928, 'pos': 0.072, 'compound': 0.9501}, sentence "
                        'was rated as 0.0% Negative, sentence was rated as '
                        '92.80000000000001% Neutral, sentence was rated as '
                        '7.199999999999999% Positive, Sentence Overall Rated '
                        'As Positive',
 'bonnieRatt-reviews': "Overall sentiment dictionary is : {'neg': 0.034, "
                       "'neu': 0.612, 'pos': 0.354, 'compound': 0.9999}, "
                       'sentence was rated as 3.4000000000000004% Negative, '
                       'sentence was rated as 61.199999999999996% Neutral, '
                       'sentence was rated as 35.4% Positive, Sentence Overall '
                       'Rated As Positive',
 'boygeorge-reviews': "Overall sentiment dictionary is : {'neg': 0.039, 'neu': "
                      "0.884, 'pos': 0.076, 'compound': 0.9217}, sentence was "
                      'rated as 3.9% Negative, sentence was rated as 88.4% '
                      'Neutral, sentence was rated as 7.6% Positive, Sentence '
                      'Overall Rated As Positive',
 'brianlittrell-reviews': "Overall sentiment dictionary is : {'neg': 0.052, "
                          "'neu': 0.873, 'pos': 0.074, 'compound': 0.8203}, "
                          'sentence was rated as 5.2% Negative, sentence was '
                          'rated as 87.3% Neutral, sentence was rated as '
                          '7.3999999999999995% Positive, Sentence Overall '
                          'Rated As Positive',
 'briansetzerorchestra-reviews': "Overall sentiment dictionary is : {'neg': "
                                 "0.046, 'neu': 0.646, 'pos': 0.308, "
                                 "'compound': 1.0}, sentence was rated as 4.6% "
                                 'Negative, sentence was rated as '
                                 '64.60000000000001% Neutral, sentence was '
                                 'rated as 30.8% Positive, Sentence Overall '
                                 'Rated As Positive',
 'brianwilson-reviews': "Overall sentiment dictionary is : {'neg': 0.042, "
                        "'neu': 0.647, 'pos': 0.311, 'compound': 1.0}, "
                        'sentence was rated as 4.2% Negative, sentence was '
                        'rated as 64.7% Neutral, sentence was rated as 31.1% '
                        'Positive, Sentence Overall Rated As Positive',
 'brucehornsby-reviews': "Overall sentiment dictionary is : {'neg': 0.0, "
                         "'neu': 0.928, 'pos': 0.072, 'compound': 0.9196}, "
                         'sentence was rated as 0.0% Negative, sentence was '
                         'rated as 92.80000000000001% Neutral, sentence was '
                         'rated as 7.199999999999999% Positive, Sentence '
                         'Overall Rated As Positive',
 'bryanadams-reviews': "Overall sentiment dictionary is : {'neg': 0.008, "
                       "'neu': 0.933, 'pos': 0.059, 'compound': 0.9028}, "
                       'sentence was rated as 0.8% Negative, sentence was '
                       'rated as 93.30000000000001% Neutral, sentence was '
                       'rated as 5.8999999999999995% Positive, Sentence '
                       'Overall Rated As Positive',

Answer 1

直接排序不起作用，因为字典值是字符串，而不是字典或列表。要按化合物排序，首先需要提取它的值。下面是一个简单的示例，说明如何使用regex和lambda进行操作：

import re


def extract_compound(item):
    # define regex to extract compound value
    rgxp = r'(?<=\'compound\':\s)\d\.\d+'
    compound = re.search(rgxp, item)
    compound = compound.group(0)

    return float(compound)


review_sorted = {key: value for key, value in sorted(
    review.items(), key=lambda item: extract_compound(item[1]), reverse=True)