scholarly journals Análisis Automático de Modelos de Variabilidad : el Proceso SeVaTax

10.52278/2849 ◽  
2021 ◽  
Author(s):  
Pol’la, Matias Esteban

Una línea de productos software provee de una plataforma común flexible, de manera que permita adaptarse a las diferentes necesidades de productos dentro de un rango de requerimientos establecido. Dicha flexibilidad se logra mediante la identificación, definición y posterior configuración de lo que se conoce como Variabilidad. Los modelos de variabilidad, como cualquier otro artefacto software, están sujetos a un proceso de análisis para detectar y (posiblemente) resolver errores e incompatibilidades. Esto lleva a la existencia de un proceso de análisis de variabilidad, que presta especial atención al momento de definición y uso de la variabilidad. Existen hoy día, propuestas que presentan diferentes métodos y/o herramientas para realizar un análisis automatizado de la variabilidad. Sin embargo, muchas de ellas se enfocan en sólo un tipo de modelo como entrada y/o sólo disponen de algunos escenarios de validación para controlar. A su vez, muy pocas proponen correcciones o identifican exactamente dónde se encuentran las anomalías o inconsistencias en los modelos. Entonces, se hace necesario mejorar este proceso de validación y su soporte, evaluando el rendimiento durante esa validación. En este sentido, esta Tesis propone el proceso llamado SeVaTax, que toma como entrada modelos de variabilidad (uno o más), generando una representación formal que permite analizar un conjunto de escenarios de validación mayor y proporciona un nivel diferente de respuestas, incluso proponiendo algunas acciones específicas para corregir los modelos. Se proponen dieciocho escenarios de validación, que son experimentalmente validados desde dos puntos de vista: (1) la exactitud de los resultados en términos de los errores que SeVaTax permite identificar; y (2) el cubrimiento, que muestra el grado en que el conjunto de escenarios está cubierto por otros enfoques con herramientas similares. A software product line supplies a common and flexible platform, which allows to adaptto different needs of products from a range of established requirements. Such a flexibility is achieved through the identification, definition and configuration of what is called Variability. Variability models, like any other software artifact, are subjected to an analysis process to detect and (possibly) solve errors and incompatibilities. This fact leads to the existence of a process called variability analysis, which pays special attention to the variability definition and use. Nowadays, several approaches propose different methods and/or tools to automatically analyzing variability. However, many of these approaches only focus on one type of model as input, and/or only show some validation scenarios to control. In addition, few approaches propose corrections, or identify where the anomalies or inconsistencies are. Therefore, there is a need of improving the analysis process as well as its support, assessing their performance during validation. In this sense, this Thesis proposes the SeVaTax process, which takes variability models (one or more) as inputs, generates a formal representation that allows to analyze a larger set of validation scenarios, and gives a different level of responses to validation – including corrections in some cases. Eighteen validation scenarios are proposed, which are experimentally validated form two viewpoints: (1) accuracy, in terms of errors that SeVaTax identifies; and (2) covering, that shows the degree in which the set of scenarios is covered by similar proposals in the literature.

2014 ◽  
Vol 5 (4) ◽  
pp. 52-76
Author(s):  
Shamim H Ripon ◽  
Sk. Jahir Hossain ◽  
Moshiur Mahamud Piash

Software Product Line (SPL) provides the facility to systematically reuse of software improving the efficiency of software development regarding time, cost and quality. The main idea of SPL is to identify the common core functionality that can be implemented once and reused afterwards. A variant model has also to be developed to manage the variants of the SPL. Usually, a domain model consisting of the common and variant requirements is developed during domain engineering phase to alleviate the reuse opportunity. The authors present a product line model comprising of a variant part for the management of variant and a decision table to depict the customization of decision regarding each variant. Feature diagrams are widely used to model SPL variants. Both feature diagram and our variant model, which is based on tabular method, lacks logically sound formal representation and hence, not amenable to formal verification. Formal representation and verification of SPL has gained much interest in recent years. This chapter presents a logical representation of the variant model by using first order logic. With this representation, the table based variant model as well as the graphical feature diagram can now be verified logically. Besides applying first-order-logic to model the features, the authors also present an approach to model and analyze SPL model by using semantic web approach using OWL-DL. The OWL-DL representation also facilitates the search and maintenance of feature models and support knowledge sharing within a reusable engineering context. Reasoning tools are used to verify the consistency of the feature configuration for both logic-based and semantic web-based approaches.


Author(s):  
Sathya Ganeshan ◽  
Muthu Ramachandran

The success of initiating a software product line based approach on an organization depends on a few critical factors. Among them is a thoroughly performed commonality analysis process. This can be imagined as a collecting the supplies and road map required to reach a particular destination. This chapter analyses this critical process and presents our own views and methods of conducting commonality analysis.


Author(s):  
Hitesh Yadav ◽  
Rita Chhikara ◽  
Charan Kumari

Background: Software Product Line is the group of multiple software systems which share the similar set of features with multiple variants. Feature model is used to capture and organize features used in different multiple organization. Objective: The objective of this research article is to obtain an optimized subset of features which are capable of providing high performance. Methods: In order to achieve the desired objective, two methods have been proposed. a) An improved objective function which is used to compute the contribution of each feature with weight based methodology. b) A hybrid model is employed to optimize the Software Product Line problem. Results: Feature sets varying in size from 100 to 1000 have been used to compute the performance of the Software Product Line. Conclusion: The results shows that proposed hybrid model outperforms the state of art metaheuristic algorithms.


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