PSM（Practical Software and Systems Measurement） 过程的9条软件度量准则：
1）Project issues and objectives drive the measurement requirements
2）The developer’s process defines how the software is actually measured.
3）Collect and analyze data at a level of detail sufficient to identify and isolate software problems.
4）Implement an independent analysis capability.
5）Use a structured analysis process to trace the measures to the decisions.
6）Interpret the measurement results in the context of other project information.
7）Integrate software measurement into project management throughout the software life cycle.
8）Focus initially on single project analysis.
9）Use the measurement process as a basis for objective communications.
1）项目问题和目标驱动度量需求
2）开发过程定义了软件实际如何被测量
3）收集和分析在一定程度上足够充分的数据以识别和隔离软件问题
（人月神话帮忙修改的翻译：收集和分析数据的详细级别要足够以识别和隔离软件问题）
4）实现独立分析能力
5）使用结构化过程跟踪用于决策的度量
6）根据项目上下文信息解释说明度量的结果
7）在软件生命周期中将软件度量集成到项目管理中
8）最初聚焦于单一的项目分析
9）使用度量过程作为目标沟通的基础