高效的过程表达方式

ETVX是指 entry进入，Task任务，Verification验证(也有用Validate确认)，Exit退出。ETVX本身也是一个质量控制的过程。下面是指自于http://syque.com/quality_tools/toolbook/Process/etvx_quality.htm

• Entry criteria define what inputs are required and what quality these must be to achieve the exit criteria. Entry criteria should be communicated to supplier processes, to become their exit criteria. If supplier processes are sufficiently well controlled, then there is no need to check inputs.

• Task definitions specify the actions within the process.

• Validation definitions identify test points within the process and define the tests and criteria for checking at these points. This enables problems to be caught close to their cause, reducing rework and scrap costs, and enabling problem causes to be addressed.

• Exit criteria define what outputs are required and what quality these must be to meet the needs of customer processes. Exit criteria may be derived from the entry criteria of customer processes.

Together, these make up what is known as the ETVX model (as below), which can be used to define the process and the quality required within it completely.

In process improvement, it can be useful to apply this model to processes that are suspected of being troublesome, in order to identify measures to identify specific problems.

ETVX在各个场合得到应用，已经被证明是一种有效的高效的过程。

过程的表达方式有很多种，最常见的就是带序号的文字，也有用图表示的，各种的说明书等等都有各自的过程表达方式。
作为过程的表达方式，ETVX也是一种高效的写法，有如下的原因：
1，ETVX的写法与ETVX的过程本身就是一致。
2，ETVX的写作过程可以尽量使用文字，避免使用图片、动画等等，写作过程高效。
3，ETVX写出来的过程表述结构清晰，易于理解，阅读过程商效。
4，ETVX可扩展，也容易扩展，对于重要的过程可以再加上职责、度量、工作产品或称产出物等等 。

正应为ETVX的优势，以后本版所表达的过程将尽量用ETVX范式来表达。
ETVX过程表达范式如下：

XXX过程
进入条件(E)
xxxxxxx
任务(T)
1, xxxxx
2,yyyyy
3,zzzzzzz
...
n, aaaaaaa
验证(V)
bbbbbbbbb
退出(X)
ccccccc
其它关注的内容
dddddddddddd

参考:http://dbmaker.syscom.com.tw/mag/132/se-cmmi_01.htm