Feature extraction approaches from natural language requirements for reuse in software product lines: A systematic literature review
Hybrid NLP approaches were more common for extracting textual requirements. There is a mixture of automated and semi-automated approaches from IR and data mining. Support tools were not made available to the public. Not all studies use software metrics in conjunction with experiments and case studies. Reconfirm practitioners guidelines absence from selected studies (Alves et al., 2010).
feature extractions natural language requirements software product lines systematic literature review requirements reuse