Muneo Takahashi

An Approach to GA-Driven Automatic Refactoring Based on Design Patterns

Refactoring is a process of applying behavior-preserving transformations to improve the design, readability, structure, performance, abstraction, and maintainability of existing code. This paper presents an approach to genetic algorithm-driven refactoring for Java programs to automatically judge the qualities of programs based on design patterns. If a program is judged to be bad, refactoring will be further recommended so that the program can be transformed using an appropriate design pattern.

The medical diagnostic support system using extended Rough Neural Network and Multiagent

Multiagent technologies enable us to explore their sociological and psychological foundations. Amedical dignostic support system is built using this. Moreover, We think that the data inputted can acquire higher diagnostic accuracy by sorting out using a determination table. In this paper, the recurrence diagnostic system of cancer is built and the output error of Multiagents learning method into the usual Neural Network and a Rough Neural Network and Genetic Programming be compared. The data of the prostates cancer offered by the medical institution and a renal cancer was used for verification of a system.

A MODEL FOR PROGRAM ERROR PREDICTION BASED ON TESTING CHARACTERISTICS AND ITS EVALUATION

There are two types of models for predicting software reliability at the end of testing. One is the software reliability growth model (dynamic model) based on a given set of time series data. The other is the software complexity model (static model) based on the development environmental factors which have an influence on the software reliability. As the dynamic model depends on the time factor and the test method used, its prediction accuracy does not necessarily correspond to the data of practical projects. On the other hand, the static model needs the many significant parameters to accurately predict the software reliability. However, it is very difficult to select the main factors that determine the significant parameters out of a great number of factors which affect software reliability. In order to resolve these problems, this paper proposes a model to predict the number of embedded errors in a program at the end of testing phase. This model is based on the testing characteristics such as error detection rate and test case density. The result of an experiment shows that the proposed model is more reliable than the conventional models.

Synchronization of Multi-window Requests for Server-Side Regression Test of Web Applications

With conventional regression test tools for Web applications,it is difficult to specify the values to be verified that are repeatedly output inside loop statements. This paper presents a method that automates a regression test of a Web application on the server side. This method makes it easy to specify values to be verified when we develop Web applications, and enables us to directly check the verification results that are displayed in Web pages.

Functional Web Component Generation for Visual Web Application Programming

Abstract This paper presents functional Web components, which conventional development environments for Web applications have not yet supported. The functional Web components sum up various kinds of data in two dimensions as spreadsheets. These components greatly reduce the amount of code that developers have to write. The paper also describes the system that implements these functional components as visual Web components. By using visual Web components, the system also makes it easier to write actions executed when a Web page transfers to another.

EXTENSIBLE SYNTAX-ORIENTED VERIFIER WITH CONTEXT-DEPENDENT RECURSIVE VERIFICATION

To develop Web applications of high quality, it is important to apply efficient frameworks to standardize the process of development in projects, or apply useful design patterns to produce the program code that can easily be enhanced. In addition to these efforts, we have to check the programs to see whether they keep various kinds of rules such as verification items for security which are common for all kinds of Web applications, and verification items for coding styles or code conventions which pertain to each project. This paper proposes a verification method for an extensible syntax-oriented verifier, and describes the implementation of its prototype system, SyntaxVerifier. SyntaxVerifier makes it possible to detect syntactical objects based on their syntactic contexts. It realizes a context-dependent recursive verification which makes it easy to dynamically trace a syntax tree in a verification process itself.

Web-Based Troubleshooter Generation for System Administration

This paper proposes a method for generating a Web-page based troubleshooter, which diagnoses troubles about computer system administration. This troubleshooter digs out several possible causes (hypotheses) from the current status of a trouble, and then examines those hypotheses in turn. After the cause is identified, it will present a solution to fix the trouble. To illustrate the status of a trouble, possible causes,examination methods and presentation of a solution, WebPages (hereafter, info pages) are used, which are defined in HTML code. From the info pages that explain each status of troubleshooting, the method this paper presents generates troubleshooter client/server interface, a stack of status history and titled links to the next info pages. This paper also describes two ways to easily implement this method on both of a client side and a server side.