University of California at Irvine
Irvine Research Unit in Software (IRUS)
is proud to sponsor the

Software Process Improvement Network (SPIN)

Cost, Schedule and Quality Modeling

Friday, June 25, 1999

9:00 a.m. - 12:00 noon
McDonnell Douglas Auditorium
University of California, Irvine

There is a $15.00 charge for non-sponsors.
Checks should be made payable to UC Regents.

No reservations required.

Recent Advances in Constructive Cost, Schedule and Quality Modeling
Barry Boehm, TRW Professor of Computer Science and Director,

Center for Software Engineering, Univ. of Southern California,

In the last two years there have been significant improvements in the breadth, depth and accuracy of the public, open Constructive Cost Model, COCOMO. Following an explanation of the underlying COCOMO model concepts and their rationale, Dr. Boehm will explain where and how the models are evolving and expanding into the COCOMO Suite. He will explain how both the accuracy and the applicability of the model have increased recently.

COQUALMO--Constructive Quality Model
Sunita Chulani, Sr. Software Engineering Specialist, Rational Software Corporation,

Software estimation models can play an important role in facilitating the balance of the three factors of Cost, Schedule and Quality. COQUALMO is an estimation model focusing on quality, but its ties to COCOMO II provide estimation models in the other two areas. Dr. Chulani will present the model and the initial results to date.

CORADMO--Constructive RAD/Schedule Model
A. Winsor Brown, Assistant Director, Center for Software Engineering,

Many generic RAD techniques are applied to reduce schedule, sometimes with an accompanying increase in total effort. One of the bases for this model came from a behavioral analysis of a set of RAD drivers suggested by a CSE Workshop on RAD. Another component of the model comes from a staged schedule and effort distribution model based on Dr. Boehm's "Anchor Points" and the Rational Unified Process model. The conceptual model has been implemented in a spreadsheet that is linked to the output of COCOMO-II.1999.

COCOTS--Constructive COTS Model - (PDF)
Christopher M. Abts, Graduate Research Assistant, Center for Software Engineering,

School of Engineering, University of Southern California,

Off-the-shelf software integration cost modeling focuses on estimating the cost, effort, and schedule associated with using commercial off-the-shelf (COTS) components in a software development project. Though still experimental, COCOTS is a model complementary to COCOMO II, capturing costs that traditionally have been outside the scope of COCOMO: (1) candidate COTS component assessment, (2) COTS component tailoring, (3) the development and testing of any integration or "glue" code needed to plug a COTS component into a larger system, and (4) increased system level programming due to volatility in incorporated COTS components. COCOTS is envisioned as working in concert with COCOMO II to provide a complete software development cost estimation solution.

COPROMO--Constructive Productivity-Improvement Model
Barry Boehm, TRW Professor of Computer Science and Director,

Center for Software Engineering, Univ. of Southern California,

Constructive Productivity-Improvement Model (COPROMO) is a Software Engineering Senior Management strategic planning decision assistant model. It is supported by an implementation approach. The model is based on the use of COCOMO II and CORADMO as valuation mechanisms. The implementation approach uses a representative application from the domain of concern to the senior management, and the identification of "technology" drivers and time frames. Also, a technology impact evaluation tool exists; one version of the tool has been implemented and used in the evaluation of the Knowledge Based Software Assistant.

Dr. Barry Boehm. Between 1989 and 1992, Barry Boehm served within the U.S. Department of Defense (DoD) as Director of the DARPA Information Science and Technology Office, and as Director of the DDR&E Software and Computer Technology Office. He worked at TRW from 1973 to 1989, culminating as Chief Scientist of the Defense Systems Group. Other positions include Rand Corporation culminating as head of the Information Sciences Department and General Dynamics.

His current research interests focus on integrating a software system's process models, product models, property models, and success models via an approach called MBASE (Model-Based Architecting and Software Engineering). His contributions to the field include the Constructive Cost Model (COCOMO), the Spiral Model of the software process, and the Theory W (win-win) approach to software management and requirements determination.

A. Winsor Brown. Following a BES from RPI and an MSEE from CalTech, Winsor has over 25 years of experience in software development, engineering and management; it was gained in aerospace, industrial and commercial applications.

Sunita Chulani. Sunita Chulani got her BE in CE from Bombay University and an MS and Ph.D. in CS from USC. Her interests include statistical software process improvement, estimation and modeling, software metrics and risk management.

Christopher Abts. Chris Abts has a BSIE from Georgia Tech and an MSISE from USC. He spent ten years in industry, working as a lead systems engineer/analyst for Logicon, Inc.

Coordinator: A. Winsor Brown, USC/CSE,

UCI Maps and Directions to meeting are available.

Next Meeting:

Date: July 30, 1999
Topic: Acquisition Best Practices - Issues and Experience
Speaker: Donald J. Reifer, Reifer Consultants, Inc.
Coordinator: A. Winsor Brown, University of Southern California,

The Irvine Research Unit in Software wishes to thank its corporate sponsors:


The Boeing Company * IBM * Microsoft Corporation * Northrop Grumman Corporation
Raytheon Company * Sun Microsystems * TRW


Beckman Coulter * FileNet Corporation * Printronix, Inc.
Continuus Software Corporation * Hewlett Packard

For further information on SPIN or IRUS,

contact Debra Brodbeck at (949) 824-2260,

Irvine Research Unit in Software
Information and Computer Science
University of California, Irvine CA 92697-3425