COCOMO 1 和 COCOMO 2 的区别

COCOMO 1 型号：
建设性成本模型首先由 Barry W. Boehm 开发。该模型用于估计软件项目的工作量、成本和进度。它也被称为基本 COCOMO。该模型用于对项目的各种参数进行近似估计。基于此模型的项目示例是业务系统、工资管理系统和库存管理系统。

COCOMO 2 型号：
COCOMO-II 是原始 Cocomo（建设性成本模型）的修订版，由南加州大学开发。该模型将开发时间和工作量计算为所有单个子系统估计值的总和。在这个模型中，整个软件被分成不同的模块。基于此模型的项目示例是电子表格和报告生成器。

COCOMO 1 和 COCOMO 2 的区别：

COCOMO I	COCOMO II
COCOMO I is useful in the waterfall models of the software development cycle.	COCOMO II is useful in non-sequential, rapid development and reuse models of software.
It provides estimates of effort and schedule.	It provides estimates that represent one standard deviation around the most likely estimate.
This model is based upon the linear reuse formula.	This model is based upon the non linear reuse formula
This model is also based upon the assumption of reasonably stable requirements.	This model is also based upon reuse model which looks at effort needed to understand and estimate.
Effort equation’s exponent is determined by 3 development modes.	Effort equation’s exponent is determined by 5 scale factors.
Development begins with the requirements assigned to the software.	It follows a spiral type of development.
Number of submodels in COCOMO I is 3 and 15 cost drivers are assigned	In COCOMO II, Number of submodel are 4 and 17 cost drivers are assigned
Size of software stated in terms of Lines of code	Size of software stated in terms of Object points, function points and lines of code