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Da Silva I.F.,Federal University of Pernambuco | Da Silva I.F.,Fraunhofer Project Center for Software and Systems Engineering | Da Silva I.F.,West Parana State University | Da Mota Silveira Neto P.A.,Fraunhofer Project Center for Software and Systems Engineering | And 5 more authors.
Information and Software Technology | Year: 2015

Context: Software product lines (SPLs) and Agile are approaches that share similar objectives. The main difference is the way in which these objectives are met. Typically evidence on what activities of Agile and SPL can be combined and how they can be integrated stems from different research methods performed separately. The generalizability of this evidence is low, as the research topic is still relatively new and previous studies have been conducted using only one research method. Objective: This study aims to increase understanding of Agile SPL and improve the generalizability of the identified evidence through the use of a multi-method approach. Method: Our multi-method research combines three complementary methods (Mapping Study, Case Study and Expert Opinion) to consolidate the evidence. Results: This combination results in 23 findings that provide evidence on how Agile and SPL could be combined. Conclusion: Although multi-method research is time consuming and requires a high degree of effort to plan, design, and perform, it helps to increase the understanding on Agile SPL and leads to more generalizable evidence. The findings confirm a synergy between Agile and SPL and serve to improve the body of evidence in Agile SPL. When researchers and practitioners develop new Agile SPL approaches, it will be important to consider these synergies. © 2014 Elsevier B.V. All rights reserved. Source

Da Silva I.F.,Federal University of Pernambuco | Da Silva I.F.,West Parana State University | Da Mota Silveira Neto P.A.,Reuse in Software Engineering RiSE | O'Leary P.,Lero the Irish Software Engineering Research Center | And 3 more authors.
Journal of Systems and Software | Year: 2014

Software product line (SPL) engineering has been applied in several domains, especially in large-scale software development. Given the benefits experienced and reported, SPL engineering has increasingly garnered interest from small to medium-sized companies. It is possible to find a wide range of studies reporting on the challenges of running a SPL project in large companies. However, very little reports exist that consider the situation for small to medium-sized enterprises and these studies try develop universal truths for SPL without lessons learned from empirical evidence need to be contextualized. This study is a step towards bridging this gap in contextual evidence by characterizing the weaknesses discovered in the scoping (SC) and requirements (RE) disciplines of SPL. Moreover, in this study we conducted a case study in a small to medium sized enterprises (SMEs) to justify the use of agile methods when introducing the SPL SC and RE disciplines through the characterization of their bottlenecks. The results of the characterization indicated that ineffective communication and collaboration, long iteration cycles, and the absence of adaptability and flexibility can increase the effort and reduce motivation during project development. These issues can be mitigated by agile methods. © 2013 Elsevier Inc. All rights reserved. Source

Magnavita R.,Fraunhofer Project Center for Software and Systems Engineering | Magnavita R.,Federal University of Bahia | Novais R.,Federal Institute of Bahia | Mendonca M.,Federal University of Bahia
ICEIS 2015 - 17th International Conference on Enterprise Information Systems, Proceedings | Year: 2015

Software evolution produces large amounts of data which software engineers need to understand for their daily activities. The use of software visualization constitutes a promising approach to help them comprehend multiple aspects of the evolving software. However, portraying all the data is not an easy task as there are many dimensions to the data (e.g. time, files, properties) to be considered. This paper presents a new software visualization metaphor inspired by concentric waves, which gives information about the software evolution in different levels of detail. This new metaphor is able to portray large amount of data and may also be used to consider different dimensions of the data. It uses the concepts of the formation of concentric waves to map software evolution data generated during the waves formation life cycle. The metaphor is useful for exploring and identifying certain patterns in the software evolution. To evaluate its applicability, we conducted an exploratory study to show how the visualization can quickly answer different questions asked by software engineers when evolving their software. Copyright © 2015 SCITEPRESS - Science and Technology Publications. Source

Novais R.L.,Federal University of Bahia | Novais R.L.,Federal Institute of Bahia | Torres A.,Federal University of Bahia | Mendes T.S.,Federal University of Bahia | And 4 more authors.
Information and Software Technology | Year: 2013

Background Software evolution is an important topic in software engineering. It generally deals with large amounts of data, as one must look at whole project histories as opposed to their current snapshot. Software visualization is the field of software engineering that aims to help people to understand software through the use of visual resources. It can be effectively used to analyze and understand the large amount of data produced during software evolution. Objective This study investigates Software Evolution Visualization (SEV) approaches, collecting evidence about how SEV research is structured, synthesizing current evidence on the goals of the proposed approaches and identifying key challenges for its use in practice. Methods A mapping study was conducted to analyze how the SEV area is structured. Selected primary studies were classified and analyzed with respect to nine research questions. Results SEV has been used for many different purposes, especially for change comprehension, change prediction and contribution analysis. The analysis identified gaps in the studies with respect to their goals, strategies and approaches. It also pointed out to a widespread lack of empirical studies in the area. Conclusion Researchers have proposed many SEV approaches during the past years, but some have failed to clearly state their goals, tie them back to concrete problems, or formally validate their usefulness. The identified gaps indicate that there still are many opportunities to be explored in the area. © 2013 Elsevier B.V. All rights reserved. Source

Soares L.R.,Federal University of Bahia | Do Carmo Machado I.,Federal University of Bahia | De Almeida E.S.,Federal University of Bahia | De Almeida E.S.,Fraunhofer Project Center for Software and Systems Engineering
ACM International Conference Proceeding Series | Year: 2015

Software Product Line Engineering (SPLE) emerges for software organizations interested in customized products at reasonable costs. Based on the selection of features, stakeholders can derive programs satisfying a range of functional properties and non-functional ones. The explicit definition of Non-Functional Properties (NFP) during software configuration has been considered a challenging task. Dealing with them is not well established yet, neither in theory nor in practice. In this sense, we present a framework to specify NFP for SPLE and we also propose a reuse approach that promotes the reuse of NFP values during the product configuration. We discuss the results of a case study aimed to evaluate the applicability of the proposed work. Copyright 2015 ACM. Source

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