Effect of Schedule Compression on Project Effort
Name
CP_050614_Yang,Chen,Valerdi,Boehm_ISPA.pdf
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279.57 KB
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91ca2c6226de69675d9512e660a7eaed
Author(s)
Yang, Ye
Chen, Zhihao
Valerdi, Ricardo
Boehm, Barry
Date Issued
June 14, 2005
Abstract
Schedule pressure is often faced by project managers and software developers who want to quickly deploy
information systems. Typical strategies to compress project time scales might include adding more
staff/personnel, investing in development tools, improving hardware, or improving development methods. The
tradeoff between cost, schedule, and performance is one of the most important analyses performed during the
planning stages of software development projects. In order to adequately compare the effects of these three
constraints on the project it is essential to understand their individual influence on the project’s outcome.
In this paper, we present an investigation into the effect of schedule compression on software project
development effort and cost and show that people are generally optimistic when estimating the amount of
schedule compression. This paper is divided into three sections. First, we follow the Ideal Effort Multiplier
(IEM) analysis on the SCED cost driver of the COCOMO II model. Second, compare the real schedule
compression ratio exhibited by 161 industry projects and the ratio represented by the SCED cost driver.
Finally, based on the above analysis, a set of newly proposed SCED driver ratings for COCOMO II are
introduced which show an improvement of 6% in the model estimating accuracy.
Subjects
schedule compression
COCOMO II SCED Driver
software cost/effort estimation
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