O'Reilly logo

Sentiment Analysis and Opinion Mining by Bing Liu

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

CHAPTER 11

Quality of Reviews

In this chapter, we discuss the quality of reviews. The topic is related to opinion spam detection, but is also different because low-quality reviews may not be spam or fake reviews, and fake reviews may not be perceived as low-quality reviews by readers because as we discussed in the last chapter, by reading reviews it is very hard to spot fake reviews. For this reason, fake reviews may also be seen as helpful or high quality reviews if the imposters write their reviews early and craft them well.

The objective of this task is to determine the quality, helpfulness, usefulness, or utility of each review (Ghose and Ipeirotis, 2007; Kim et al., 2006; Liu et al., 2007; Zhang and Varadarajan, 2006). This is a meaningful ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required