Software Process Improvement Network

 (C-SPIN) Meeting

AT&T Center Campus  

AT&T Institute 2501 W. Eagle Way

Hoffman Estates, IL 60192


Wednesday, February 22, 2012

6:00 - 7:00 PM – Atrium:  Registration & Networking (Bring your own refreshments!)

6:20 - 6:40 PM – Birds-of-a-Feather: Discussion on a topic related to program.     

7:00 - 8:30 PM – Auditorium: Presentation

8:30 - 9:00 PM – Auditorium: additional Q&A and discussion



Building and Using a Defect Prediction Model

Presenters:  Laura Zawadzki, IT Quality Manager, Motorola Mobility Inc.,
Tatiana Orlova, Quality Analyst, PMP, Motorola Mobility Inc.





Every Software organization has a goal to reduce the number of defects delivered with a software product.  While defect prevention is much more efficient in reducing the number of defects, most organizations still rely on testing. We often plan our testing based upon schedule constraints and previous experience of testing the application, rather than on analysis of the requirements and expected defects to determine the level of testing required to meet the desired level of quality.  In addition, testing cycles are often cut to meet schedule commitments without considering the impact on the quality of the project deliverables and the defects that could escape to production.

By providing an estimate of the expected defects for a project, based upon the requirements, we can better estimate the scope of defect prevention and removal activities required on a project, understand the balance between testing effort and quality and make educated decisions on resource planning, scope and schedule.

This presentation will address how our defect prediction model was created, how it was adjusted based on organization specifics and analysis of historical data and how it can be used to make decisions on testing effort, scope and schedule and estimate the quality of project deliverables. We will cover and discuss:

·         Methodologies that were used as basis of model development

·         4-step process of defect estimation

·         Benefits of using the model


About the Presenters

Tatiana Orlova is a Quality Analyst, PMP with Motorola Mobility, Libertyville, IL.  Tatyana’s particular interest is in establishing effective practices that will enable improved ability to deliver quality products and meet project's delivery promises.  Tatiana has a Master's degree in Computer Science from St.-Petersburg State Technical University, Russia. LinkedIn profile:

         Laura Zawadzki has broad experience in the full end to end software development life cycle as well as process and quality management, client relationship, business aligned IT planning and deploying enterprise wide strategic programs.  LinkedIn profile:


Driving and Parking Directions and Last Minute Instructions

Check for a map of the AT&T Campus Center and any last minute details.


About C-SPIN

               C-SPIN is a leadership forum for the free and open exchange of software process improvement experiences and practical ideas. We promote achieving higher levels of process maturity, software quality, and mutual respect. Companies, academic institutions, government organizations, and individuals are invited. For information about C-SPIN and its board, contact Tony Kvitek @

               To receive future announcements electronically, register your e-mail address (include name, personal email address, company, and phone number) at