Polarity Dataset v2.0

Preliminary steps were taken to remove rating information from the text files, but only the rating information upon which the rating decision was based is guaranteed to have been removed. Thus, if the original review contains several instances of rating information, potentially given in different forms, those not recognized as valid ratings remain part of the review text. The reviews are split into sentences in the .csv file, which are labeled with the review they come from, as well as the sentiment of the overall review.研究人员已开展初步预处理操作以从文本文件中移除评分信息，但仅确保已删除作为评分决策依据的评分内容。因此，若原始评论包含多组以不同形式呈现的评分信息，则未被识别为有效评分的内容仍会保留在评论文本中。该数据集的评论文本已在.csv文件中被拆分为句子，每个句子均标注其所属的原始评论，以及该条评论的整体情感倾向。