Revisão sistemática dos fatores de impacto na estimativa de esforço em projetos de software

Abstract

Context: software engineering has emerged to make it possible for complex systems to be developed on time and with high quality. The need for increasingly accurate and efficient software effort estimates is evident in the software market. Estimating effort is a very important task for software projects and of right difficulty to be performed with satisfactory accuracy. There are factors that influence these estimates directly or indirectly, positively or negatively. Objective: this paper aims to identify significant studies carried out in the context of effort estimation, to verify factors that influence software projects in some way, and finally to demonstrate them. Method: to achieve this goal, we used the systematic literature review methodology, with the following steps: 1. Literature review. 2. Systematic review planning. 3. Conducting the systematic review. 4. Answer the survey questions. Answer the survey questions. In all, there were 859 papers from three databases of which were accepted 53 for data extraction. Results: the initial agreement results calculated from the study selection phase where it was performed, in parallel with a collaborator, were satisfactory, since the lowest percentage index was 84.4%. From the analysis of the relevant studies, 29 factors that influence the effort estimate were verified. Conclusion: understanding project management activities from the outset is important to avoid estimation failures, and consequently schedule delays and cost overruns. Therefore, knowledge about the factors that influence effort estimation is relevant for the industry, as it allows project estimators and managers to anticipate the errors caused by the factors. In addition, they assist organizations that aim to commit to the estimates specified at the beginning of the project, benefiting all stakeholders.