Generalized Reuse Model for COSYSMO Workshop Outbrief October 18, 2012 Gan Wang, BAE Systems Ricardo Valerdi, University of Arizona Garry Roedler, Lockheed Martin Mauricio Peña, Boeing

Workshop Participants Name Organization Rick Selby USC / Northrop John Dixon Lockheed Martin Dan Ligett Softstar Systems Lori Saleski BAE Systems Reggie Cole Lockheed Martin David Zubrow SEI / CMU Peter McLoone Lockheed Martin Qi Li USC Arlene Minkiewic Price Systems Gan Wang BAE Systems Ricardo Valerdi University of Arizona Mauricio Pena USC/ Boeing

Overview Goals: Summary: Expand to a more comprehensive (qualitative) framework to further understand, capture, and evaluate reuse in systems engineering To understand the investment perspective To address some of the potential gaps Lead to quantitative evaluation through enhancing the reuse model in the Cost Estimating Relationship (CER) of COSYSMO 2.0 Summary: Presented a brief history of COSYSMO evolution in reuse Introduced the Generalized Reuse Model concept Design with Reuse (DWR) and Design for Reuse (DFR) Defined the model categories and proposed equation Solicited feedback from the participants on a matrix of required systems engineering activities as they relate to the reuse of artifacts

Take-Aways: Reuse Approach COCOMO II treats reuse a cost driver, to account for the extra tax associated with designing for future reuse a sizing adjustment parameter, to account for designing with reuse Need to explore both the strategic and opportunistic approaches (and everything in the middle), no projects truly exist at the extremes A typical system will have both DWR and DFR SE products Take some elements that are going to be reused, and Develop some elements to be reusable

Take-Aways: Investment in Reuse The willingness to invest in planned reuse comes down to incentives on the decision-makers Near-term investment for future gain One program view vs. product line approach Tradeoff: reusability and affordability Point designs vs. envelope design Approaches that will lead to investments in reusable products Lobby the customer to provide reusability requirements Make the case internally for investment in reusability Use product line ROI if applicable

Reuse Validation How do you validate reuse? Establish capability envelopes Evaluate the proposed system against the capability envelopes “You don’t know its reusable until the third program uses it” Need to create a metric for the pedigree of reusable components based on how many times they’ve been reused before

Feedback & Next Steps Feedback on the model / framework Next Steps Modified the matrix of systems engineering activities based on participant feedback Added a category called “no DFR” Next Steps Will send the updated matrix to workshop participants to receive their input on the correlation between activities and artifacts for reuse The correlation matrix will be utilized to develop a first-cut at weights for the different DWR and DFR categories The weights will then be evaluated using expert judgment