You are presented with multiple paper abstracts, alongside the associated literature review and chapter titles. Given the provided information, you are going to do a literature review. Please generate a coherent literature review that synthesizes the content, draws connections between different works, highlights major findings, and identifies any gaps in the existing research.

Literature Review Title: Software Testing Process Models Benefits&Drawbacks: a Systematic Literature Review 
Chapter Title:  Which are the advantages and drawbacks of each testing model as reported in the empirical papers? (RQ3) 
1. Abstract of Cited Paper (BIB001):  As one of the most challenging and costly processes, the software testing provides strong support for the high quality software. The popular process improvement models do not adequately address testing application issues, nor has the knowledge management (KM) implementation in testing been well defined. The plan-do-check-action (PDCA)-based testing improvement framework is proposed to address these issues. The framework contains the adaptive processes definition, the processes implementation and measurement analysis, and benchmarking-based assessment approach. Experiments show that: the framework can stimulate team member's subjective initiative, promote the software testing process and improve the testing service quality.

Literature Review:
Based on the article of Cruzes and Dybå BIB001 about synthesizing evidence in research papers, we collect and cate- BIB002 gorize models' advantages and disadvantages.