37 research outputs found
Recovering Architectural Variability of a Family of Product Variants
A Software Product Line (SPL) aims at applying a pre-planned systematic reuse
of large-grained software artifacts to increase the software productivity and
reduce the development cost. The idea of SPL is to analyze the business domain
of a family of products to identify the common and the variable parts between
the products. However, it is common for companies to develop, in an ad-hoc
manner (e.g. clone and own), a set of products that share common
functionalities and differ in terms of others. Thus, many recent research
contributions are proposed to re-engineer existing product variants to a SPL.
Nevertheless, these contributions are mostly focused on managing the
variability at the requirement level. Very few contributions address the
variability at the architectural level despite its major importance. Starting
from this observation, we propose, in this paper, an approach to reverse
engineer the architecture of a set of product variants. Our goal is to identify
the variability and dependencies among architectural-element variants at the
architectural level. Our work relies on Formal Concept Analysis (FCA) to
analyze the variability. To validate the proposed approach, we experimented on
two families of open-source product variants; Mobile Media and Health Watcher.
The results show that our approach is able to identify the architectural
variability and the dependencies
Symptoms-Based Fuzzy-Logic Approach for COVID-19 Diagnosis
The coronavirus (COVID-19) pandemic has caused severe adverse effects on the human life and the global economy affecting all communities and individuals due to its rapid spreading, increase in the number of affected cases and creating severe health issues and death cases worldwide. Since no particular treatment has been acknowledged so far for this disease, prompt detection of COVID-19 is essential to control and halt its chain. In this paper, we introduce an intelligent fuzzy inference system for the primary diagnosis of COVID-19. The system infers the likelihood level of COVID-19 infection based on the symptoms that appear on the patient. This proposed inference system can assist physicians in identifying the disease and help individuals to perform self-diagnosis on their own cases
Identifying Components from Object-Oriented APIs Based on Dynamic Analysis
The reuse at the component level is generally more effective than the one at
the object-oriented class level. This is due to the granularity level where
components expose their functionalities at an abstract level compared to the
fine-grained object-oriented classes. Moreover, components clearly define their
dependencies through their provided and required interfaces in an explicit way
that facilitates the understanding of how to reuse these components. Therefore,
several component identification approaches have been proposed to identify
components based on the analysis object-oriented software applications.
Nevertheless, most of the existing component identification approaches did not
consider co-usage dependencies between API classes to identify classes/methods
that can be reused to implement a specific scenario. In this paper, we propose
an approach to identify reusable software components in object-oriented APIs,
based on the interactions between client applications and the targeted API. As
we are dealing with actual clients using the API, dynamic analysis allows to
better capture the instances of API usage. Approaches using static analysis are
usually limited by the difficulty of handling dynamic features such as
polymorphism and class loading. We evaluate our approach by applying it to
three Java APIs with eight client applications from the DaCapo benchmark.
DaCapo provides a set of pre-defined usage scenarios. The results show that our
component identification approach has a very high precision.Comment: 11 pages, 5 figure