Design Pattern Mining Using Distributed Learning Automata and DNA Sequence Alignment

Abstract

ContextOver the last decade, design patterns have been used extensively to generate reusable solutions to frequently encountered problems in software engineering and object oriented programming. A design pattern is a repeatable software design solution that provides a template for solving various instances of a general problem.ObjectiveThis paper describes a new method for pattern mining, isolating design patterns and relationship between them; and a related tool, DLA-DNA for all implemented pattern and all projects used for evaluation. DLA-DNA achieves acceptable precision and recall instead of other evaluated tools based on distributed learning automata (DLA) and deoxyribonucleic acid (DNA) sequences alignment.MethodThe proposed method mines structural design patterns in the object oriented source code and extracts the strong and weak relationships between them, enabling analyzers and programmers to determine the dependency rate of each object, component, and other section of the code for parameter passing and modular programming. The proposed model can detect design patterns better that available other tools those are Pinot, PTIDEJ and DPJF; and the strengths of their relationships.ResultsThe result demonstrate that whenever the source code is build standard and non-standard, based on the design patterns, then the result of the proposed method is near to DPJF and better that Pinot and PTIDEJ. The proposed model is tested on the several source codes and is compared with other related models and available tools those the results show the precision and recall of the proposed method, averagely 20% and 9.6% are more than Pinot, 27% and 31% are more than PTIDEJ and 3.3% and 2% are more than DPJF respectively.ConclusionThe primary idea of the proposed method is organized in two following steps: the first step, elemental design patterns are identified, while at the second step, is composed to recognize actual design patterns.

A Block Chain Approach to Extract Design Patterns from Source Code

“…Table 2 reports five groups of source codes used to validate the proposed method. The source codes included JHotDraw 6.0b1, Apache Ant 1.6.2, Swing 1.4, ArgoUML [41], and Eclipse 3.6 [42] (Java).…”

“…The DNA sequence alignment of design patterns was compared to the source code, and DLA was employed to determine the relationships between the patterns. There would be a reward or penalty, depending on whether the relationship between a pair of patterns was strong or weak [41]. In a different approach, a set of substructures were searched before detecting design pattern implementations.…”