tailieunhanh - Chapter 8 Measurement and Metrics

Tham khảo tài liệu 'chapter 8 measurement and metrics', công nghệ thông tin, cơ sở dữ liệu phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Chapter 8 Measurement and Metrics CONTENTS PROCESS Developing a Metrics Program Define Derive Develop Define the Collection implementing a Metrics evaluating a Metrics Metrics MEASUREMENT AND METRICS Developing a Metrics Metrics Program Metrics Program February 2003 8-1 Chapter 8 Measurement and Metrics Condensed GSAM Handbook This page intentionally left blank. 8-2 February 2003 Chapter 8 Measurement and Metrics You cannot control what you cannot measure. - Tom DeMarco 1982. Imagine going on a road trip of over a thousand miles. This is easy because most of us have done the real thing several times. Now imagine that your car has no speedometer no odometer no fuel gauge no temperature indicator. Imagine also that someone has removed the mile markers and road signs from all the roads between you and your destination. And just to complete the experiment remove your watch. What was once a simple journey becomes an endless series of guesses fraught with risks. How do you know where you are how far you ve gone how far to go when to gas the car should you stop here or try to make the next town before nightfall. You could break down run out of gas be stranded take the wrong road bypass your destination or waste time trying to find where you are and how to reach your destination. Clearly some method of measuring certain indicators of progress is essential for achieving a goal. Imagine again going on a road trip. This time the cockpit of the car is filled with instruments. In addition to what you have been accustomed to in the past there is now speed in feet and yards per second and as a percentage of c light speed oil pressure in millibars estimated time to deplete or recharge the battery fuel burn

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