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Gbb open presentation

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Valeriy Zamarayev
Valeriy Zamarayev

GBBOpen is an interactive OOP tool for Common Lisp based on the blackboard metaphor of specialists collaboratively solving problems. It originated from 1970s speech recognition and sonar data projects. GBBOpen provides CLOS tools and libraries for dates, math, threads, and more. Its core functionality includes bidirectional links between objects, event handling, hierarchical spaces to store objects, and instance retrieval. It implements journaling and could support other persistence backends.

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GBBOpen An interactive OOP tool for Common Lisp Valeriy Zamarayev @valeryz
BlackBoard Metaphor A group of specialists sitting a room with a large blackboard. Work as a team to brainstorm a solution to a problem. Everyone contributes to the blackboard, when the information on the blackboard allows to apply their knowledge
A bit of History From 1970s: Hearsay II speech recognition Interpretation of sonar data for ocean surveillance projects More recent: Collaborative Network for Atmospheric Sensing LiftOff! (Earth observation satellite RADARSAT-1) DARPA Urban Challenge (C++ KOGMO RTDB)
Alternatives? Just use a database to store the current state with a schema (or, some schemaless mess) and queries? Tight coupling between app code and BB Often inefficiency Use an custom in-memory representation developed specifically for the task There's a Flexibility vs. Efficiency tradeoff
Blackboard Subsystems Blackboard Storage of objects in hierarchical spaces Dimensional retrieval Knowledge Sources (KS) Control Shell
GBBOpen Tools Useful CLOS tools define-class macro MOP tools Various libs that should belong elsewhere Declared Numerics Pseudo Probabilities Date/Time Datastructures
GBBOpen Tools Portable Threads Scheduled / Periodic Functions Sockets Double Metaphone Etc etc etc. Even Modules (like ASDF, why?)
GBBOpen CORE Links (bidirectional automatically verified) Events Spaces Instance Retrieval
Persistence? Streaming? Implemented Journaling Prevalence-like persistence possible Other backends can be implemented (but not at the moment)
Persistence? Streaming? Implemented Journaling Prevalence-like persistence possible Other backends can be implemented (but not at the moment)

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Gbb open presentation

  • 1. GBBOpen An interactive OOP tool for Common Lisp Valeriy Zamarayev @valeryz
  • 2. BlackBoard Metaphor A group of specialists sitting a room with a large blackboard. Work as a team to brainstorm a solution to a problem. Everyone contributes to the blackboard, when the information on the blackboard allows to apply their knowledge
  • 3. A bit of History From 1970s: Hearsay II speech recognition Interpretation of sonar data for ocean surveillance projects More recent: Collaborative Network for Atmospheric Sensing LiftOff! (Earth observation satellite RADARSAT-1) DARPA Urban Challenge (C++ KOGMO RTDB)
  • 4. Alternatives? Just use a database to store the current state with a schema (or, some schemaless mess) and queries? Tight coupling between app code and BB Often inefficiency Use an custom in-memory representation developed specifically for the task There's a Flexibility vs. Efficiency tradeoff
  • 5. Blackboard Subsystems Blackboard Storage of objects in hierarchical spaces Dimensional retrieval Knowledge Sources (KS) Control Shell
  • 6. GBBOpen Tools Useful CLOS tools define-class macro MOP tools Various libs that should belong elsewhere Declared Numerics Pseudo Probabilities Date/Time Datastructures
  • 7. GBBOpen Tools Portable Threads Scheduled / Periodic Functions Sockets Double Metaphone Etc etc etc. Even Modules (like ASDF, why?)
  • 8. GBBOpen CORE Links (bidirectional automatically verified) Events Spaces Instance Retrieval
  • 9. Persistence? Streaming? Implemented Journaling Prevalence-like persistence possible Other backends can be implemented (but not at the moment)
  • 10. Persistence? Streaming? Implemented Journaling Prevalence-like persistence possible Other backends can be implemented (but not at the moment)