1. Introduction to Constructive COTS (COCOTS) Model and Tool
Jesal Bhuta and Ye Yang
{jesal,
Thursday, January 03, 2019
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2. Outline Modeling Context COCOTS Cost Sources Current Status Tool Demo
Thursday, January 03, 2019
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3. COTS Modeling Problem Context
(COTS Components as Application Elements, Infrastructure, or Tools)
COTS and Custom
Applications Components
New
Modeling
Problem
COTS as Infrastructure COTS as Tools (
COCOMO II
parms PVOL ,
PLEX )
parms LTEX
, TOOL)
Cost Modeling Currently Addressed Within
II: COTS as Infrastructure and Tools 1
Thursday, January 03, 2019
Copyright © USC-CSE

4. COCOTS Cost Sources
LCO
LCA
IOC ( re
quirements (
preliminary (
system
review)
design review)
delivery)
3. COTS Glue Code
Development
2. COTS
1. COTS
Tailoring
Staffing
Assessment
Application Code Development, Integration, and Test Separate from COTS Effects
Time
COCOTS Effort Estimate
LCO –
Lifecycle Objectives
LCA –
Lifecycle Architecture
IOC –
Initial Operational Capability
COCOMO II Effort Estimate
Thursday, January 03, 2019
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5. Current Status – (1) Three Sub-models
Assessment sub-model
Tailoring sub-model
Glue code sub-model
Mathematical form of each sub-model is different
However, a common feature is estimates based upon classes of COTS components being examined
Example COTS classes: GUI builders, operating systems, databases, word processors, etc
See demo later
Thursday, January 03, 2019
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6. Current Status – (2) Calibrated on 20 data points Project Domains
Air Traffic Management
Business (including databases)
Communication, Navigation, & Surveillance
Logistics
Mission Planning
Operations
Web-based Maps
Thursday, January 03, 2019
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