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Extending the COCOMO II software cos...

Abts, Christopher Mark.

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Extending the COCOMO II software cost model to estimate effort and schedule for software systems using commercial-off-the-shelf (COTS) software components: The COCOTS model.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Extending the COCOMO II software cost model to estimate effort and schedule for software systems using commercial-off-the-shelf (COTS) software components: The COCOTS model./
Author:	Abts, Christopher Mark.
Description:	290 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-07, Section: B, page: 3638.
Contained By:	Dissertation Abstracts International65-07B.
Subject:	Engineering, Industrial. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3140423
ISBN:	0496875647

Extending the COCOMO II software cost model to estimate effort and schedule for software systems using commercial-off-the-shelf (COTS) software components: The COCOTS model.
Abts, Christopher Mark.

Extending the COCOMO II software cost model to estimate effort and schedule for software systems using commercial-off-the-shelf (COTS) software components: The COCOTS model. - 290 p.

Source: Dissertation Abstracts International, Volume: 65-07, Section: B, page: 3638.

Thesis (Ph.D.)--University of Southern California, 2004.

This dissertation discusses changes in software development practice that have occurred since the 1970s. In particular, the focus is on the rise of the "off-the-shelf"approach whereby large software systems are constructed out of a mix of original code and adapted code as well as pre-existing "black box" components for which the developer has no access to the source code. While certainly used prior to 1980, this technique of using black box elements has taken on greatly increased importance in recent years as one way to manage development risks as the overall complexity of software has grown.

ISBN: 0496875647Subjects--Topical Terms:

626639
Engineering, Industrial.

Extending the COCOMO II software cost model to estimate effort and schedule for software systems using commercial-off-the-shelf (COTS) software components: The COCOTS model.
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245 1 0 $a Extending the COCOMO II software cost model to estimate effort and schedule for software systems using commercial-off-the-shelf (COTS) software components: The COCOTS model.
300 $a 290 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-07, Section: B, page: 3638.
500 $a Adviser: F. Stan Settles.
502 $a Thesis (Ph.D.)--University of Southern California, 2004.
520 $a This dissertation discusses changes in software development practice that have occurred since the 1970s. In particular, the focus is on the rise of the "off-the-shelf"approach whereby large software systems are constructed out of a mix of original code and adapted code as well as pre-existing "black box" components for which the developer has no access to the source code. While certainly used prior to 1980, this technique of using black box elements has taken on greatly increased importance in recent years as one way to manage development risks as the overall complexity of software has grown.
520 $a Software estimation models, however, have generally not kept apace with off-the-shelf techniques. This includes the widely-used COCOMO software estimation model. While recently updated as the COCOMO II estimation model to reflect other changes in software development since its original publication in 1981, it still is unable to accommodate the use of black box off-the-shelf components in its estimation framework.
520 $a The focus of this dissertation then is the investigation of a potential extension of COCOMO II that is intended to provide an estimation capability for any off-the-shelf elements being designed into a software system. It begins with an exploration of how development activities differ when using off-the-shelf components as opposed to developing system components as original code. This serves as a basis for the formulation of an off the-shelf estimation model called COCOTS that is carried through several iterations, each intended to improve upon its predecessor. The dissertation concludes with a comparison of the fidelity of COCOTS with COCOMO II, limitations of available project data that impacted the calibration of COCOTS, and suggestions for further investigation that might improve the fidelity of COCOTS itself and also expand and deepen the general understanding of the benefits and risks of using off-the-shelf components in software system development.
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