Introduction to Constructive COTS COCOTS Model and Tool

1
Introduction to Constructive COTS (COCOTS) Model
and Tool

• Ye Yang, USC-CSE
• Nov. 7, 2003
• yangy_at_sunset.usc.edu

2
Outline

• Modeling Context
• COCOTS Cost Sources
• Current Status
• Tool Demo

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COTS Modeling Problem Context
1
4
COCOTS Cost Sources



LCA

LCO
IOC




(
preliminary


(
re
quirements
(
system



design review)


review)

delivery)

3. COTS Glue Code

Development


2. COTS


1. COTS
Tailoring

Assessment
Staffing
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
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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

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