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NASA Software Cost Estimation Model: An Analogy Based Estimation ModelThe cost estimation of software development activities is increasingly critical for large scale integrated projects such as those at DOD and NASA especially as the software systems become larger and more complex. As an example MSL (Mars Scientific Laboratory) developed at the Jet Propulsion Laboratory launched with over 2 million lines of code making it the largest robotic spacecraft ever flown (Based on the size of the software). Software development activities are also notorious for their cost growth, with NASA flight software averaging over 50% cost growth. All across the agency, estimators and analysts are increasingly being tasked to develop reliable cost estimates in support of program planning and execution. While there has been extensive work on improving parametric methods there is very little focus on the use of models based on analogy and clustering algorithms. In this paper we summarize our findings on effort/cost model estimation and model development based on ten years of software effort estimation research using data mining and machine learning methods to develop estimation models based on analogy and clustering. The NASA Software Cost Model performance is evaluated by comparing it to COCOMO II, linear regression, and K-­ nearest neighbor prediction model performance on the same data set.
Document ID
Document Type
Conference Paper
External Source(s)
Hihn, Jairus
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Juster, Leora
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Menzies, Tim
(North Carolina State Univ. Asheville, NC, United States)
Mathew, George
(North Carolina State Univ. Asheville, NC, United States)
Johnson, James
(NASA Headquarters Washington, DC United States)
Date Acquired
August 1, 2017
Publication Date
June 9, 2015
Subject Category
Statistics And Probability
Computer Programming And Software
Meeting Information
Meeting: ICEAA Professional Development & Training Workshop 2015
Location: San Diego, CA
Country: United States
Start Date: June 9, 2015
End Date: June 12, 2015
Sponsors: International Cost Estimating and Analysis Assoc.
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