共查询到19条相似文献,搜索用时 234 毫秒
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水利信息化建设近年来得到空前的重视和强大的推力,但如何度量和评估软件项目成本仍是水利行业软系统开发项目预算管理和决算审计过程中亟待解决的问题,本文阐述了软件开发生命周期、软件成本构成及软件测算方法,重点结合某市防汛会商平台系统的开发,采用功能点法对软件开发费用进行合理的测算,运用相关知识进行功能点规模的估算,为今后水利同类软系统项目的概预算管理工作提供有力技术支撑,推动水利软件成本测算的合理性和科学化。 相似文献
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针对军用型号项目软件研制过程中普遍存在的软件复用行为,提出了一种复用成本度量方法,对传统的COCOMO2.0成本度量模型进行了改进,采用改进的功能点法估计软件实际规模,适当调整模型中的评估项,增加了度量系统复用的成本驱动因子及系统通用特性统计项(GSC),建立了相应的量化评估及DI分级表,形成了军用型号项目软件进度、成本估计模型,使用改进的度量模型对某军用型号项目进行了成本度量,验证了方法的有效性。 相似文献
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功能点方法是一种比较准确的软件工程开发量度量方法。本文在对功能点方法进行分析的基础上,结合通信企业软件开发的实际,参照SPR对软件行业基础数据的研究,对功能点方法在分析通信企业软件开发预算中的应用进行了探讨,并以实例说明该方法在通信行业的适用性。 相似文献
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丁旭光 《计算机光盘软件与应用》2014,(20):38+40
项目成本管理是项目管理的核心组成部分,是确保在批准的预算内完成项目,是对实现项目目标所付出代价的计划,组织与控制。成本管理包括资源计划、成本估计、成本预算和成本控制。本文基于项目管理理论和项目管理措施、方法对如何做好项目成本管理在成本估算、成本预算、成本控制等方面进行了探讨。 相似文献
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针对软件项目前期成本估算不准确问题,通过构建软件项目案例库,提出一种基于CBR的软件项目成本估算方法(CBRCEM)。根据COCOMO模型成本驱动因子理论,确定影响项目成本属性特征;引入归一化效用函数,应用层次分析法计算影响项目成本属性的权重值;通过对常用案例检索算法的比较分析,结合软件成本估算的特性,建立基于改进的灰色关联分析理论的软件项目相似度算法;根据PERT理论估算软件项目成本,使估算结果更为准确。CBRCEM在Windows平台上用JAVA语言开发完成并在实际中加以应用,案例研究结果表明,对于软件项目前期成本估算,该方法能够得到更加准确的评估结果。 相似文献
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Project effort is critical for the success of software development projects. It has a major impact on whether constraints in time and budget can be complied with. But although requirements affect project effort, requirements engineering (RE) methods are not capable of assessing project effort. In this paper, we present our mapping model for assessing project effort (MMAPE). MMAPE incorporates into RE the assessment of project effort resulting from requirements for software development projects. It maps semantics of the RE method KAOS onto structures that are counted in function point analyses. We applied MMAPE in a case study on a software development project within a large financial institution. The validity of MMAPE is supported, since we found throughout consistent statements between information provided by MMAPE and data gathered from the case. 相似文献
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Robert Lagerstr?m Liv Marcks von Würtemberg Hannes Holm Oscar Luczak 《Software Quality Journal》2012,20(2):395-417
Software systems of today are often complex, making development costs difficult to estimate. This paper uses data from 50
projects performed at one of the largest banks in Sweden to identify factors that have an impact on software development cost.
Correlation analysis of the relationship between factor states and project costs was assessed using ANOVA and regression analysis.
Ten out of the original 31 factors turned out to have an impact on software development project cost at the Swedish bank including
the: number of function points, involved risk, number of budget revisions, primary platform, project priority, commissioning
body’s unit, commissioning body, number of project participants, project duration, and number of consultants. In order to
be able to compare projects of different size and complexity, this study also considers the software development productivity
defined as the amount of function points per working hour in a project. The study at the bank indicates that the productivity
is affected by factors such as performance of estimation and prognosis efforts, project type, number of budget revisions,
existence of testing conductor, presentation interface, and number of project participants. A discussion addressing how the
productivity factors relate to cost estimation models and their factors is presented. Some of the factors found to have an
impact on cost are already included in estimation models such as COCOMO II, TEAMATe, and SEER-SEM, for instance function points
and software platform. Thus, this paper validates these well-known factors for cost estimation. However, several of the factors
found in this study are not included in established models for software development cost estimation. Thus, this paper also
provides indications for possible extensions of these models. 相似文献
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软件项目费用风险混合评估方法 总被引:1,自引:1,他引:0
在软件工程领域摹于公式模型预测的结果往往并不比人的经验准确,然而基于经验的预测方法也存在不少问题.提出的软件项目费用风险评估方法基于专家知识经验和历史项目数据,综合利用功能点分析方法以统计或估箅项目的大小,建立了由专家评估预测费用超出的BN模型,由历史数据得到费用超出与生产力之间的关系,从而计算计划项目的生产力.进而估计项目的计划费用,通过对项目当前生产力与计划生产力的比较,评估项目当前是否存在费用风险.方法与费用预测模型无关,费用预算和项目最终实际费用以相对应的理想项目费用为参照物,与在不确定性费用预算基础上进行费用风险分析评估的方法相比,具有较高的可靠性. 相似文献
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软件工程概念从1968年被提出以来,经历了近50年的发展,软件系统规模和复杂程度日益加大,然而从上个世纪70年代左右开始,软件工程领域出现大量软件项目进度延期、预算超支和质量缺陷为典型特征的软件危机.这体现出软件成本估算在软件工程开发过程的重要性.精准的软件成本估算是软件工程按时完成的保证.本文采用一种基于皮尔逊相关系数的相似度量方法,结合TOPSIS方法软件成本进行类比估算以获取与之最接近项目的项目作为参考进行软件成本估算.最后将该方法应用于Desharnais数据集进行实验,并和其他方法进行比较,实验结果表明,本文采用的基于相关系数的软件成本度量方法较已有的相似性度量方法准确度更好. 相似文献
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The primary focus of weapon systems research and development has moved from a hardware base to a software base and the cost of software development is increasing gradually. An accurate estimation of the cost of software development is now a very important task in the defense domain. However, existing models and tools for software cost estimation are not suitable for the defense domain due to problems of accuracy. Thus, it is necessary to develop cost estimation models that are appropriate to specific domains. Furthermore, most studies of methodology development are aligned with generic methodologies that do not consider the pertinent factors to specific domains, whereas new methodologies should reflect specific domains. In this study, we apply two generic methodologies to the development of a software cost estimation model, before suggesting an integrated modeling process specifically for the national defense domain. To validate our proposed modeling process, we performed an empirical study of 113 software development projects on weapon systems in Korea. A software cost estimation model was developed by applying the proposed modeling process. The MMRE value of this model was 0.566 while the accuracy was appropriate for use. We conclude that the modeling process and software cost estimation model developed in this study is suitable for estimating resource requirements during weapon system development in South Korea’s national defense domain. This modeling process and model may facilitate more accurate resource estimation by project planners, which will lead to more successful project execution. 相似文献
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软件项目计划的目标规划模型 总被引:1,自引:0,他引:1
论文通过对现有的项目计划和度量手段的分析,引入运筹学领域的目标规划模型。力图通过一个数学的模型,来尽量准确地刻画软件项目计划中各个要素之间的关系。并通过对该模型中一系列的目标和约束方程式的求解,来找到软件项目开发计划过程中可以使项目人员调配、时间分配、项目成本、软件质量、项目完成期限、项目利润等一系列因素平衡的一个满意解。 相似文献
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软件开发中的风险评估及其实践 总被引:4,自引:0,他引:4
在软件项目的开发过程中,准确地识别项目中存在的风险、对风险加以分析并采取有效的预防措施是保证项目成功的关键因素之一。风险评估是软件开发风险管理的重要组成部分,目前已经发展成为软件项目开发与控制的常用管理方法。文章叙述了Boehm关于风险评估的经典理论、SEI基于问卷调查的风险评估法、基于成本估算的风险评估法以及该领域的其它最新研究进展。最后对软件开发风险评估方法的发展方向提出了自己的观点。 相似文献