“…• More detailed classification than filtering has been performed in the studies [35, 37-39, 42, 43, 45, 50, 51, 54-57, 64-66, 79-82, 87, 92, 93, 102-104, 106], for example, by classifying app reviews into bug reports, feature requests, user experiences, or text ratings [38], by classifying user reviews into specific dimensions of usability and user experiences [55], and by classifying app reviews into functional and non-functional requirements [43]. • Classification of requirements-related information has been done using machine-learning approach [35,38,39,42,43,45,50,51,55,56,64,79,92], rule-based classification [37,57,102], and topic modeling [54] Identification of candidate features related to requirements…”