Cost Model Based on Software-Process and Process Oriented Cost System

The paper attempted to establish a software process oriented cost system depend upon cost model based on software process. It considers that it is impossible to realize the cost oriented process control and process improvement in view of software artifact is a complete unit. Firstly, cost model based on software process is introduced, different from the cost model based on product unit; the paper defines the reusable software process as the object of cost-metric. And then the paper provides ontology of software process and cost-metric in order to give a semantic background of cost-metric object and metric data. The research of this paper emphasizes on establishing cost management system oriented to software process, realizing the software process related cost measure, data record, and thereafter realizing cost control during the project execution and cost estimation in the phase of software process modeling. At last the paper expounds the method of integrating cost systems into PSEEs.