Abstract
This paper proposes a modification to the Academic COSYSMO estimating relationship to remedy a critical limitation in its current implementation of the cost drivers. The effort multipliers defined for these drivers have an overdramatic impact on the nominal effort, which unrealistically amplifies or compresses the effort estimate. This problem severely limits its practical applications. The newly proposed parametric relationship is inspired by the COCOMO II modeling approach and based on the considerations of the life cycle impact of the cost drivers. Two additional cost drivers are also introduced. The feasibility of the new model definition is examined with a boundary analysis and validated by the analysis of historical data. This work is based on the practical implementation of COSYSMO at BAE Systems. In this paper, we present (1) an analysis of the problem with the current COSYSMO model definition; (2) a proposal of two new cost drivers added to the current fourteen cost drivers; (3) an analysis of life cycle impact of the cost drivers and a division of the drivers based on the impact; (4) the modified COSYSMO parametric relationship; (5) validation of the modified COSYSMO relationship through an analysis of historical data; and (6) conclusion and suggestion of future work.
| Original language | English (US) |
|---|---|
| Title of host publication | 18th Annual International Symposium of the International Council on Systems Engineering, INCOSE 2008 |
| Pages | 2473-2485 |
| Number of pages | 13 |
| Volume | 4 |
| State | Published - 2008 |
| Externally published | Yes |
| Event | 18th Annual International Symposium of the International Council on Systems Engineering, INCOSE 2008 - Utrecht, Netherlands Duration: Jun 15 2008 → Jun 19 2008 |
Other
| Other | 18th Annual International Symposium of the International Council on Systems Engineering, INCOSE 2008 |
|---|---|
| Country | Netherlands |
| City | Utrecht |
| Period | 6/15/08 → 6/19/08 |
Fingerprint
ASJC Scopus subject areas
- Hardware and Architecture
- Information Systems
- Control and Systems Engineering
Cite this
Proposed modification to COSYSMO estimating relationship. / Wang, Gan; Valerdi, Ricardo; Boehm, Barry; Shernoff, Alex.
18th Annual International Symposium of the International Council on Systems Engineering, INCOSE 2008. Vol. 4 2008. p. 2473-2485.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Proposed modification to COSYSMO estimating relationship
AU - Wang, Gan
AU - Valerdi, Ricardo
AU - Boehm, Barry
AU - Shernoff, Alex
PY - 2008
Y1 - 2008
N2 - This paper proposes a modification to the Academic COSYSMO estimating relationship to remedy a critical limitation in its current implementation of the cost drivers. The effort multipliers defined for these drivers have an overdramatic impact on the nominal effort, which unrealistically amplifies or compresses the effort estimate. This problem severely limits its practical applications. The newly proposed parametric relationship is inspired by the COCOMO II modeling approach and based on the considerations of the life cycle impact of the cost drivers. Two additional cost drivers are also introduced. The feasibility of the new model definition is examined with a boundary analysis and validated by the analysis of historical data. This work is based on the practical implementation of COSYSMO at BAE Systems. In this paper, we present (1) an analysis of the problem with the current COSYSMO model definition; (2) a proposal of two new cost drivers added to the current fourteen cost drivers; (3) an analysis of life cycle impact of the cost drivers and a division of the drivers based on the impact; (4) the modified COSYSMO parametric relationship; (5) validation of the modified COSYSMO relationship through an analysis of historical data; and (6) conclusion and suggestion of future work.
AB - This paper proposes a modification to the Academic COSYSMO estimating relationship to remedy a critical limitation in its current implementation of the cost drivers. The effort multipliers defined for these drivers have an overdramatic impact on the nominal effort, which unrealistically amplifies or compresses the effort estimate. This problem severely limits its practical applications. The newly proposed parametric relationship is inspired by the COCOMO II modeling approach and based on the considerations of the life cycle impact of the cost drivers. Two additional cost drivers are also introduced. The feasibility of the new model definition is examined with a boundary analysis and validated by the analysis of historical data. This work is based on the practical implementation of COSYSMO at BAE Systems. In this paper, we present (1) an analysis of the problem with the current COSYSMO model definition; (2) a proposal of two new cost drivers added to the current fourteen cost drivers; (3) an analysis of life cycle impact of the cost drivers and a division of the drivers based on the impact; (4) the modified COSYSMO parametric relationship; (5) validation of the modified COSYSMO relationship through an analysis of historical data; and (6) conclusion and suggestion of future work.
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UR - http://www.scopus.com/inward/citedby.url?scp=84878135140&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84878135140
SN - 9781605604473
VL - 4
SP - 2473
EP - 2485
BT - 18th Annual International Symposium of the International Council on Systems Engineering, INCOSE 2008
ER -