面向对象度量的研究

度量技术是保证软件质量的重要手段,它定量地反映了软件某一方面的特征。随着面向对象技术的发展,传统的结构化度量不再适合面向对象的软件,因此出现了不少针对面向对象程序的度量,这些度量在一定程度上反映了面向对象软件的若干方面的特征。文章详细分析了面向对象软件的主要特征,在此基础上介绍了现在常见的几组面向对象度量和它们的应用价值,并且分析了它们的不足之处。最后,提出了几个构造面向对象度量应该遵循的准则。     

面向对象软件度量方法

度量技术是保证软件质量的重要方法。随着面向对象技术的发展，传统的软件度量技术不再适用于面向对象软件。文中分析了软件度量理论，讨论了目前流行的两种面向对象软件度量方法，指出其不足和进一步的工作。     

面向对象软件度量技术的研究

软件度量技术是保证软件质量的重要方法。随着面向对象技术的发展 ,传统的软件度量技术不再适用于面向对象软件 ,文中分析了软件度量理论 ,讨论了目前流行的面向对象软件度量方法C&K ,并指出其不足和进一步的工作     

面向对象软件度量技术研究

度量技术是保证软件质量的重要方法。随着面向对象技术的发展,传统的软件度量技术已不再适用于面向对象软件。首先分析了面向对象软件的主要特征,然后讨论了目前流行的两种面向对象软件度量方法,最后指出其不足和进一步的工作。     

面向对象软件设计度量技术研究

度量技术是保证软件质量的重要方法，随着面向对象技术的发展，传统的软件度量不再适用于面向对象软件，该文分析了面向对象软件设计度量理论及其基本概念，讨论了面向对象软件设计度量方法，给出一个实例，并指出进一步的工作。     

面向对象软件度量的分析和研究

软件度量学是软件工程的一个新分支，通过度量反馈的信息来控制开发过程，以提高软件质量。传统的面向过程的软件将数据和操作分离，强调以算法为核心。近年来发展起来的面向对象软件的主要特性包括抽象性、封装性、继承性和多态性，将数据和操作封装，强调以对象为核心。因此面向对象软件度量方法也随之发展起来，著名的是C＆K度量方法。还介绍了面向对象的软件可重用性的度量方法。并对面向对象软件的下一步研究阐述了看法。     

面向对象软件度量的分析和研究

软件度量学是软件工程的一个新分支,通过度量反馈的信息来控制开发过程,以提高软件质量。传统的面向过程的软件将数据和操作分离,强调以算法为核心。近年来发展起来的面向对象软件的主要特性包括抽象性、封装性、继承性和多态性,将数据和操作封装,强调以对象为核心。因此面向对象软件度量方法也随之发展起来,著名的是C&K度量方法。还介绍了面向对象的软件可重用性的度量方法。并对面向对象软件的下一步研究阐述了看法。     

一种优化的面向对象软件复杂性度量方法

首先结合面向对象技术特性,对面向对象软件类级别的CK度量方法和系统级别的MOOD度量方法进行了分析,并就CK度量提出了优化的度量方法OCK。然后结合OCK度量和MOOD度量的优点提出了较优化的面向对象软件复杂性度量方法OSCM。OSCM度量可以有效地弥补CK度量和MOOD度量的不足,优化度量结果。     

面向对象软件的技术度量

软件度量学是软件工程领域的一个重要研究方向。通过软件度量，可以改进软件的体系结构，采用合适的软件开发过程，从而降低软件开发的成本，提高软件开发的效率，保证软件能满足用户的需求，开发出高质量的软件。分析了面向对象软件度量的特点，阐述了常用的面向对象软件度量方法，并在此基础上提出了以切片为中心的度量方法。     

面向对象软件度量学的研究

软件度量学是软件工程领域的一个重要研究方向。通过软件度量,可以降低软件开发的成本,提高软件开发的效率,保证软件能满足用户的需求,开发出高质量的软件。本文分析了面向对象软件度量的特点,在著名的C＆K度量方法及其它度量方法的基础上,着重阐述了针对各种不同层次的面向对象的软件度量,包括面向OO项目的度量、面向OO系统的度量、面向类继承树的度量、面向类层的度量、面向方法（操作）的度量。     

一个实用面向对象软件度量工具的设计与实现

在分析了多种面向对象度量模型的基础上 ,设计并实现了一种实用的面向对象软件度量工具 .该工具从结构上保证了面向对象度量和面向结构度量的结合 ,与直接度量和间接度量的结合 .详细介绍了对象特征的分析 ,以及特征集和度量指标的存储设计 .最后举例验证该设计的实用性 ,并指出需进一步改进的方面 .     

An Investigation into the Applicability and Validity of Object-Oriented Design Metrics

In this paper we consider empirical evidence in support of a set of object-oriented software metrics. In particular, we look at the object oriented design metrics of Chidamber and Kemerer, and their applicability in different application domains.We briefly describe the metrics, and present our empirical findings, arising from our analysis of systems taken from a number of different application domains. Our investigations have led us to conclude that a subset of the metrics can be of great value to software developers, maintainers and project managers.     

Identification of defect-prone classes in telecommunication software systems using design metrics

The goal of this paper is to investigate the relation between object-oriented design choices and defects in software systems, with focus on a real-time telecommunication domain. The design choices are measured using the widely accepted metrics suite proposed by Chidamber and Kemerer for object oriented languages [S.R. Chidamber, C.F. Kemerer, A metrics suite for object oriented design, IEEE Transactions on Software Engineering 20 (6) (1994) 476-493].This paper reports the results of an extensive case study, which strongly reinforces earlier, mainly anecdotal, evidence that design aspects related to communication between classes can be used as indicators of the most defect-prone classes.Statistical models applicable for the non-normally distributed count data are used, such as Poisson regression, negative binomial regression, and zero-inflated negative binomial regression. The performances of the models are assessed using correlations, dispersion coefficients and Alberg diagrams.The zero-inflated negative binomial regression model based on response for a class shows the best overall ability to describe the variability of the number of defects in classes.     

A Model-Based Approach to Object-Oriented Software Metrics

The need to improve software productivity and software quality has put forward the research on software metrics technology and the development of software metrics tool to support related activities.To support object-oriented software metrics practice efectively,a model-absed approach to object-oriented software metrics is proposed in this paper.This approach guides the metrics users to adopt the quality metrics model to measure the object-oriented software products .The development of the model can be achieved by using a top-down approach.This approach explicitly proposes the conception of absolute normalization computation and relative normalization computation for a metrics model.Moreover,a generic software metrics tool-Jade Bird Object-Oriented Metrics Tool(JBOOMT)is designed to implement this approach.The parser-based approach adopted by the tool makes the information of the source program accurate and complete for measurement.It supports various customizable hierarchical metrics models and provides a flexible user interface for users to manipulate the models.It also supports absolute and relative normalization mechanisms in different situations.     

Developing Java applications for a nuclear fusion experiment: a test case for Java applicability in a demanding environment

The paper describes the experience gained in the development of Java applications in a nuclear fusion experiment. Two Java tools for graphical data display and experiment configuration set‐up are presented as case studies. Based on these tools, the results derived by the application of some metrics for object oriented software and by the analysis of the design patterns imported in the applications are presented to highlight the effective code reuse achieved with Java. The main issues in the applicability of Java in a demanding environment are then introduced and a few weaknesses of the language are finally discussed. Copyright © 2001 John Wiley & Sons, Ltd.     

完善验证的凝聚力测量方法以提升软件品质

无适当使用软件测量将可能引起软件低品质且高成本的窘态.凝聚力是软件品质重要因子之一如同维护度,可靠度和再利用度.软件模组品质的优劣必影响整体系统之品质的优劣.为了设计和维护高品质软件,软件专案经理人和软件工程师无可避免需引用软件凝聚力测量以衡量和产生高品质软件.提出以活路跃变量及视觉化变量纵距为分析基础之功能导向凝聚力测量方法.进而,以一系列实际案例来作实验验证,并以一组性质来作理论辩证所提的测量方法.因此一经完善定义,完善实验和完善辩证之凝聚力测量方法被提出用于当软件凝聚力强度的指标和因此增进软件品质.这凝聚力测量方法能容易嵌入CASE以帮助软件工程师确保软件品质.     

Fault prediction considering threshold effects of object‐oriented metrics

Software product quality can be enhanced significantly if we have a good knowledge and understanding of the potential faults therein. This paper describes a study to build predictive models to identify parts of the software that have high probability of occurrence of fault. We have considered the effect of thresholds of object‐oriented metrics on fault proneness and built predictive models based on the threshold values of the metrics used. Prediction of fault prone classes in earlier phases of software development life cycle will help software developers in allocating the resources efficiently. In this paper, we have used a statistical model derived from logistic regression to calculate the threshold values of object oriented, Chidamber and Kemerer metrics. Thresholds help developers to alarm the classes that fall outside a specified risk level. In this way, using the threshold values, we can divide the classes into two levels of risk – low risk and high risk. We have shown threshold effects at various risk levels and validated the use of these thresholds on a public domain, proprietary dataset, KC1 obtained from NASA and two open source, Promise datasets, IVY and JEdit using various machine learning methods and data mining classifiers. Interproject validation has also been carried out on three different open source datasets, Ant and Tomcat and Sakura. This will provide practitioners and researchers with well formed theories and generalised results. The results concluded that the proposed threshold methodology works well for the projects of similar nature or having similar characteristics.     

基于抽象语法树的软件度量工具的设计与实现

为了提高软件质量和控制，改善软件开发过程，文中提出了以抽象语法树为核心的软件度量工具(ASTMT)的体系结构图，介绍了度量工具的功能及特点，详细论述了工具中各个模块的设计与实现方法，着重讨论了抽象语法树的组成及其节点设计。介绍该工具在软件开发中的实际应用，进而验证了工具的实用性与有效性。     

一种基于切片技术度量Java耦合性的框架

在研究面向对象的度量问题时,人们通过简单的统计方法和基于信息源的方法来度量其中的一些特征,例如基本度量、CK度量和AoKi度量等。文中采用一种基于程序切片的方法来度量Java的耦合性问题,通过对J ava源程序中存在的耦合关系的度量,得到了一种比传统方法更精确的耦合度量方法。