Complex Systems Engineering Strategies Bob Marcus

Complex Systems Properties Emergent- Macroscopic dynamics and variables occur in the system, which is not easily predictable from local dynamics Multiscale Interactive - The macroscopic and component-level behavior interact in a measurable way Non-equilibrium – Large changes in the behavior of the system are possible under small perturbations Metastable - Long-lived non-equilibrium states can arise and be maintained in interaction with the environment Evolutionary Adaption- The system exhibits altered behavior in response to environmental changes Self Organizing - Coordinated behavior can take place among components without centralized guidance

Behavior Structures in Complex Systems Component = Basic element of functionality in the system. Intrinsic behavior under environment influences. Collaboration = Interactions without macroscopic coordinators. Behavior influenced by peer-to-peer interactions. Coordination = Interaction possibly managed by coordinators to support group goals. Behavior influenced by group dynamics. Control = Interactions directed hierarchically to foster global goals. Behavior constrained by controller. All of these structures can be present in a system of systems and can be mixed and combined recursively

Aspects and Examples of Behavior ComponentsCollaborationCoordinationControl No couplingLoose couplingCooperative processes Tight Coupling Have dynamics and/or goals Individual dynamics and goals (Nash) Shared dynamics and goals (Pareto) Global dynamics and goals (Managed) Adapt to environment Individuals adapt to each other Individuals and coordinators adapt Controllers adapt Government, Societies Town Meetings, Interactions Representatives, Communities Authoritarian, Enterprises Molecules in Chemistry GasLiquidSolid Computers in Network Peer-to-peer and Internet ExtranetIntranet

Components Behavior Structures are Recursive Controller Components Collaboration Components Coordination Coordinators Controllers Coordinators Controllers Coordinators

Complex Systems Engineering Strategies Bottom up – Self-organizing, Emergent collaboration and coordination from interactions. Top down - Traditional systems engineering, Pre- defined coordination and interactions Matchmaking – Coordination is based on matching and combining existing components to meet requirements Middle Out – Coordination combines existing components and collaborations but also drives new requirements, collaborations and components Note: Alternate strategies can be used in different stages of engineering

Top Down Design (Control-based) Existing, Enhanced, Composite and possible new services and/or systems USERS Capability specifications (with priorities) Capability description Set of Services Needed Set of Requirements Requirements Analysis User Requirements and Derived Requirements

Bottom Up Design (Collaboration-based) Existing, Enhanced, Composite and possible new services and/or systems USERS Capability specifications and possible new capabilities Capability description (with cost of implementation) and possible new capabilities Capabilities available Set of Services Available Advertising User Interfaces

Matchmaking ( SOA Orchestration) Existing, Enhanced, Composite and possible new services and/or systems USERS Capability specifications (with priorities) Capability description (with cost of implementation) Set of Services Set of Requirements Matchmaking User Requirements and Derived Requirements

Middle Out Design (Coordination-based) Existing, Enhanced, Composite and possible new services and/or systems USERS Capability specifications (with priorities) and possible new capabilities Capability description (with cost of implementation) and possible new capabilities New capabilities available New capabilities needed Set of Services Set of Requirements Mediating User Requirements and Derived Requirements

Trial Run JPMO FDCE Vendors Open Source Libraries Standards Bodies Contractors Consumers Producers Mike Hebert (JPMO) Bob Marcus (NCOIC) Needs Offerings (1)(2) (3) (4) NECC ST&T Marketplace (5) (6) (7) (8) (3) (7) (9) JMPO, FDCE groups solicited for ST&T needs Needs consolidated, prioritized and binned Needs sent to Bob Marcus Clarify need Match needs with offerings Gain producers interest Develop list of offerings – use Industry Days as delivery mechanism Scrub list of offerings and do final offering selections, finalize schedules for Industry Day(s) Ensure Industry Day(s) meet needs and ensure participation