关键词: 产品设计改进, 在线评论挖掘, 有用性建模, 情感分析, 特征评价值

Abstract: From the perspective of product design improvements, by taking the product online reviews in the competitive market environment as the research object, the data mining methods and tools are adopted to conduct online reviews big data analysis for design improvement. The focus is on usefulness analysis modeling and feature evaluation value for sentiment analysis in online reviews data mining process model. According to this process, a case study of a smart phone product is conducted, and the evaluation values of various attributes of the product are obtained. Comparing with those of the updated product, the effectiveness of the proposed method is verified.

Key words: product design improvement, online reviews mining, usefulness model, sentiment analysis, feature evaluation value