One of the unique aspects of app stores is the convenience of providing user feedback.13 Users can effortlessly leave a review and a rating for an app, providing quick feedback for developers. Developers are then better able to update their apps. This feedback mechanism contrasts with traditional feedback mechanisms like bug-reporting systems (such as Bugzilla), which are negative in nature, as they include only bugs, unlike reviews, which can be positive. Moreover, reviews can even serve as a means for deriving additional app requirements.7
Developers of top apps might be overwhelmed by the large number of received reviews. Several papers (such as by Fu et al.,5 Galvis Carreño and Winbladh,6 and Google Analytics7) and commercial efforts (such as Applause Analytics3) have proposed solutions to help developers cope with large numbers of reviews.
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