EDCS Collaborative WinWin System Definition Technology Last updated 11/15/1998
Objective Approach Recent Accomplishments Current Plan Technology Transition Research Group Participating Organizations For Further Information WinWin Page DARPA EDCS Community Home Page CSE Home Page

This project uses the WinWin system definition paradigm, the WinWin Spiral Model, and Internet-related software technology to develop distributed collaborative negotiation aids and interactive analysis tools for better and faster definition complex evolutionary software-intensive systems. It  uses Air Force satellite ground systems as its primary domain for domain exploitation, experimentation, and technology transition. The project also serves as integrator for DARPA-EDCS technology in the Rationale Capture cluster.

The project's model-driven approach integrates models of the domain (satellite ground system), life cycle process (WinWin Spiral Model), system definition products (MIL-STD-498 extended by prototypes, domain models, evolution specifications, and rationale capture), system definition satisfaction criteria (stakeholder win-win), architecture (DARPA ADL's and UML), and architecture-based attributes such as cost, schedule, performance, reliability, and interoperability (COCOMO and associated parametric models; Architect's Automated Assistant (AAA)).

The project has four major tasks:

1. Refining and extending the WinWin System and WinWin Spiral Model for more powerful rational capture and distributed collaboration support (USC lead).

2. Architecture-based attribute analysis tools (USC and TRW lead). 

3. Experimental application to satellite ground systems (SGS), (Aerospace and TRW), including exploratory definition of consensus-based open SGS architectures (Aerospace lead).

4. Exploratory exercise and integration of other EDCS technology in SGS domain (Aerospace and TRW).

• Integrated WinWin, A4/ACT-I, and Rapide tools to support SGS system definition and tradeoff analysis, and applied these to an SGS crisis-response scenario.
• Analyzed portions of emerging SGS open-architecture candidates with Rapide and AAA.
• Applied WinWin tool and WinWin Spiral Model to successful system definition of 15 multimedia applications, followed by successful implementation of five of the applications.
• Established technology and applications baseline for consensus-based SGS open architecture via 260-attended 1997 Ground Systems Architecture Workshop, co-sponsored by Air Force Ground Systems Integrated Product Team.

• Extension of WinWin System to achieve portability via Java, and integrate tool-aided videoconferencing, video rationale capture, and links to prototypes, scenarios, and other EDCS rationale capture technology.
• Extension of A4/ACT-I and AAA to capture and exploit architectural style information, including collaborative extension of AAA to real-time control style with Northrop Grumman B2 Division.
• Extension of architecture tools to address multiple-view reconciliation, including UML views in collaboration with Rational.
• Development of ACME-based bridges between A4/ACT-I and other DARPA ADL's, and application to emerging candidate SGS open architectures.
• Planning and execution of 1998 Ground System Architectures Workshop, focused on critical success factors for achieving consensus-based open SGS architecture.
• Continued experimentation and transfer of technology to applications in satellite control, multimedia, B-2, and J-STARS.

• The WinWin System has been used experimentally by Aerospace Corp. and TRW in the SGS domain, and by Northrop Grumman in the B-2 domain. It has been used in practice in successfully negotiating the specifications for 15 multimedia applications for the USC Library. It has been integrated with Catalyst by SPS, in preparation for use on a J-STARS application. WinWin has also been losely integrated with MediaDoc (USC-ISI) and Rapide (Stanford).
• WinWin is written in C and runs on UNIX workstations running X Windows. It uses the Motif widget set to create its user interface. It currently runs on SUN Microsystems Sparcstations and HP9000/700 workstations under HP-UX. Storage requirements are less than 10 megabytes and it will run in 8 Megabytes of RAM. A Java version is nearing readiness for alpha test.
• An early version of A4/ACT-I has undergone alpha test by Aerospace and TRW. A4/ACT-I is written in C and runs on UNIX workstations running X Windows. It uses the Motif widget set to create its user interface. It currently runs on SUN Microsystems Sparcstations and HP9000/700 workstations under HP-UX. Storage requirements are less than 10 megabytes and it will run in 8 Megabytes of RAM.
• The AAA tools has been experimentally applied in the SGS domain. Its extension to real-time architectural style mismatches is being co-sponsored by Northrop Grumman. AAA is written in Prolog and runs on Unix platforms.
• Aerospace and TRW have also successfully applied the DARPA/Stanford Rapide ADL in identifying behavior problems in SGS architecture specifications.

• Dr. Frank Belz (TRW)
• Dr. Barry W. Boehm (Director, USC Center for Software Engineering)
• Mr. Alexander Egyed (USC-CSE)
• Dr. Cristina Gacek (USC-CSE)
• Dr. Ellis Horowitz (Chairman, USC Computer Science Department)
• Dr. Judy Kerner (Aerospace Corp.)
• Mr. Jung-Won Park (USC-CSE)
• Dr. Dan Port (USC-CSE)

• The Aerospace Corporation
• Air Force Research Laboratory (formerly known as Rome Laboratory)
• Defense Advanced Research Projects Agency (DARPA)
• TRW
• USC-CSE

To access the entire community involved with the DARPA EDCS project click here.

Link to the WinWin Page The WinWin research project investigates collaborative and concurrent models for requirements engineering and design of complex software systems. Current development efforts on the project are focused on developing tools and environments that support the collaborative activity.

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