The analysis of opinions in reviews has been widely investigated within the last decade (Pang and Lee, 2008) and is 1 https://itunes.apple.com/us/genre/ios/ id36?mt=8 2 https://play.google.com/store/ 3 https://appworld.blackberry.com/ webstore/ 4 https://www.microsoft.com/en-us/windows/ apps-and-games typically referred to as sentiment analysis or opinion mining (Liu, 2012).
previous work in the area of analyzing user reviews in app stores is limited.