Software Engineering Institute | Carnegie Mellon University
Software Engineering Institute | Carnegie Mellon University

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Raghvinder Sangwan
April 2016 - Conference Paper Missed Architectural Dependencies: The Elephant in the Room

Topics: Software Architecture

Authors: Robert Nord, Raghvinder Sangwan, Julien Delange, Peter H. Feiler, Luke Thomas (Indiana University–Purdue University), Ipek Ozkaya

This paper presents an in-depth study of a safety-critical system that underwent major changes as a result of missed architectural dependencies.

June 2014 - Conference Paper Architectural Dependency Analysis to Understand Rework Costs for Safety-Critical Systems

Topics: Software Architecture

Authors: Robert Nord, Ipek Ozkaya, Raghvinder Sangwan (Pennsylvania State University), Ronald Koontz (Boeing Company)

This paper describes the need for a thorough understanding and analysis of architectural dependencies to minimize the cost of testing and technology upgrades.

September 2013 - Conference Paper Variations on Using Propagation Costs to Measure Architecture Modifiabilty Properties

Topics: Software Architecture

Authors: Robert Nord, Ipek Ozkaya, Raghvinder Sangwan, Julien Delange, Marco Gonzalez-Rojas (University of British Columbia), Philippe Kruchten

Demonstrates how enhancing the propogation metric based on architectural metrics results in enhancements detection of modifiability properties not detectable by the propagation cost metric.

October 2012 - Article Making Architecture Visible to Improve Flow Management in Lean Software Development

Topics: Software Architecture

Authors: Robert Nord, Ipek Ozkaya, Raghvinder Sangwan

This article explains how the flow management concept from lean software development can provide a framework for balancing the allocation of critical architectural tasks to development effort.

August 2012 - Technical Report Results of SEI Line-Funded Exploratory New Starts Projects

Authors: Len Bass, Rick Kazman, Edwin J. Morris, Brad Myers, William Nichols, Robert Nord, Ipek Ozkaya, Raghvinder Sangwan, Soumya Simanta, Ofer Strichman, Peppo Valetto, Nanette Brown, Gene Cahill, William Casey, Sagar Chaki, Cory Cohen, Dionisio de Niz, David French, Arie Gurfinkel

This report describes the line-funded exploratory new starts (LENS) projects that were undertaken during fiscal year 2011. For each project, the report presents a brief description and a recounting of the research that was done, as well as a synopsis of the results of the project.

August 2006 - Technical Report A Comparison of Requirements Specification Methods from a Software Architecture Perspective

Topics: Software Architecture

Authors: Len Bass, John K. Bergey, Paul C. Clements, Paulo Merson, Ipek Ozkaya, Raghvinder Sangwan

In this report, five methods for the elicitation and expression of requirements are evaluated with respect to their ability to capture architecturally significant requirements.

April 2006 - Presentation A Comparison of Requirements Specification Methods from a Software Architecture Perspective (SATURN 2006)

Authors: Ipek Ozkaya, Len Bass, John K. Bergey, Paul C. Clements, Paulo Merson, Raghvinder Sangwan

Ipek Ozkaya talks about an approach developed by Fergus O'Brien that is used to assess how well different requirement specification methods serve an architect's goals and needs.