• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Calibration and Validation of the COCOMO II.1997.0 Cost/Schedule Estimating Modelto the Space and Missile Systems Center Database
【24h】

Calibration and Validation of the COCOMO II.1997.0 Cost/Schedule Estimating Modelto the Space and Missile Systems Center Database

机译：COCOmO II.1997.0成本/进度估算模型对空间和导弹系统中心数据库的校准和验证

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The goal of this study was to determine the accuracy of COCOMO II.1997.0, asoftware cost and schedule estimating model, using Magnitude of Relative Error, Mean Magnitude of Relative Error, Relative Root Mean Square, and a 25 percent Prediction Level. Effort estimates were completed using the model in default and in calibrated mode. Calibration was accomplished by dividing four stratified data sets into two random validation and calibration data sets using five times resampling. It was found that homogeneous data is the key to producing the best results, and the model typically underestimates. The second part of this thesis was to try and improve upon the default mode estimates. This was accomplished by regressing the model estimates to the actual effort. Each original regression equation was transformed and tested for normality, equal variance, and significance. Overall, the results were promising; regression improved the accuracy in three of the four cases, the best having an accuracy of .2059 within 75 percent of the time.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号