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MediaHub: An Intelligent MultiMedia Distributed Platform Hub

MediaHub: An Intelligent MultiMedia Distributed Platform Hub. MediaHub. Glenn Campbell, Tom Lunney, Paul Mc Kevitt School of Computing and Intelligent Systems Faculty of Engineering University of Ulster, Magee Campus Northland Road, Derry { Campbell-g8, TF.Lunney, P.McKevitt} @ulster.ac.uk.

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MediaHub: An Intelligent MultiMedia Distributed Platform Hub

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  1. MediaHub: An Intelligent MultiMedia Distributed Platform Hub MediaHub Glenn Campbell, Tom Lunney, Paul Mc Kevitt School of Computing and Intelligent Systems Faculty of Engineering University of Ulster, Magee Campus Northland Road, Derry {Campbell-g8, TF.Lunney, P.McKevitt} @ulster.ac.uk PGNET, Liverpool JMU, June 2005

  2. Outline • Goals and objectives • Key research problems • Distributed Processing • Distributed Platforms • Architecture of MediaHub • Tools and future development PGNET, Liverpool JMU, June 2005

  3. Project goals The primary objectives of this research are to: • Interpret/generate semantic representations of multimodal input/output • Perform decision-making (fusion and synchronisation) over multimodal data • Implement MediaHub, a multimodal platform hub PGNET, Liverpool JMU, June 2005

  4. Project objectives Focus on following research questions: • Will MediaHub use frames for semantic representation or XML or one of its derivatives? • How will MediaHub communicate with various elements of a platform? • Will MediaHub constitute a blackboard or non-blackboard model? • What mechanism will be implemented for decision-making within MediaHub? PGNET, Liverpool JMU, June 2005

  5. Key research problems • Semantic Representation • Represent language and vision • Frames or XML? • Semantic Storage • Blackboard model? • Non-blackboard model? • Decision-making • Fusion and synchronisation • AI technique PGNET, Liverpool JMU, June 2005

  6. Frames (CHAMELEON) [MODULE INPUT: input INTENTION: intention-type TIME: timestamp] [SPEECH-RECOGNISER UTTERANCE:(Point to Hanne’s office) INTENTION: instruction! TIME: timestamp] [GESTURE GESTURE: coordinates (3, 2) INTENTION: pointing TIME: timestamp] XML (M3L, SmartKom) <presentationTask> <presentationGoal> <inform> <informFocus> <RealizationType>list </RealizationType> </informFocus> </inform> <abstractPresentationContent> <discourseTopic> <goal>epg_browse</goal> </discourseTopic> <informationSearch id="dim24"><tvProgram id="dim23"> <broadcast><timeDeictic id="dim16">now</timeDeictic> <between>2003-03-20T19:42:32 2003-03-20T22:00:00</between> <channel><channel id="dim13"/> </channel> </broadcast></tvProgram> </informationSearch> <result> <event> <pieceOfInformation> <tvProgram id="ap_3"> <broadcast> <beginTime>2003-03-20T19:50:00</beginTime> <endTime>2003-03-20T19:55:00</endTime> <avMedium> <title>Today’s Stock News</title></avMedium> <channel>ARD</channel> </broadcast>…….. </event> </result> </presentationGoal> </presentationTask> • Semantic representation PGNET, Liverpool JMU, June 2005

  7. Semantic storage • Blackboard or Non-blackboard? • High coupling – Blackboard? • Low coupling - distributed architecture? • Communication • Via central blackboard? • Message passing between modules? PGNET, Liverpool JMU, June 2005

  8. Decision-making (fusion & synchronisation) • Rule-based • Potential for Other AI techniques • Fuzzy Logic • Neural Networks • Genetic Algorithms • Bayesian Networks (CPNs) PGNET, Liverpool JMU, June 2005

  9. Distributed processing • PVM (Parallel Virtual Machine) (Sunderam 1990, Fink et al. 1995) • ICE (Amtrup 1995) • DACS (Fink et al. 1995, 1996) • Open Agent Architecture (OAA) (Cheyer et al. 1998, OAA 2004) • JATLite (Kristensen 2001, Jeon et al. 2000) • JavaSpaces (Freeman 2004) • CORBA (Vinoski 1993) PGNET, Liverpool JMU, June 2005

  10. Intelligent Multimedia Distributed Platforms • Blackboard Model: • Ymir (Thórisson 1999) • CHAMELEON (Brøndsted et al. 1998, 2001) • Smartkom (Bühler et al. 2002, Wahlster et al. 2001, SmartKom 2004) • DARBS (Nolle et al. 2001) • DARPA Galaxy Communicator (Bayer et al. 2001) • Psyclone (Psyclone 2004) • Spoken Image/SONAS (Ó Nualláin et al. 1994, Ó Nualláin & Smith 1994, Kelleher et al. 2000) PGNET, Liverpool JMU, June 2005

  11. Intelligent Multimedia Distributed Platforms • Non-blackboard Model: • WAXHOLM (Carlson et al. 1996) • AESOPWORLD (Okada 1996) • COLLAGEN (Rich et al. 1997) • INTERACT (Waibel et al. 1996) • Oxygen (Oxygen 2004) • EMBASSI (Kirste 2001, EMBASSI 2004) • MIAMM (MIAMM 2004) PGNET, Liverpool JMU, June 2005

  12. CHAMELEON • Language & vision integration system • consists of ten modules, mostly programmed in C and C++ • DACS communication system used for communication • Blackboard stores semantic representations produced by other modules • Communication between modules achieved by exchanging semantic representations between themselves or blackboard • Semantic representation in form of input, output and integration frames PGNET, Liverpool JMU, June 2005

  13. Architecture of CHAMELEON PGNET, Liverpool JMU, June 2005

  14. SmartKom • User adaptive interface for human-computer interaction • Mobile • Public • Home/Office • Facilitates speech, gestures and facial expression input • XML-based mark-up language, M3L, used for semantic representation • Distributed multiple blackboard model PGNET, Liverpool JMU, June 2005

  15. Architecture of SmartKom PGNET, Liverpool JMU, June 2005

  16. Project proposal • Dialogue Manager • Acts as a blackboard module • Facilitates communication between other modules • Synchronisation • Semantic Representation Database • Provides semantic representation of language and vision data • Decision Making Module • AI technique for a unique form of decision-making • Bayesian Networks (CPNs) • Neural Networks, Genetic Algorithms, Fuzzy Logic PGNET, Liverpool JMU, June 2005

  17. Architecture of MediaHub PGNET, Liverpool JMU, June 2005

  18. Comparison of Intelligent MultiMedia Platforms PGNET, Liverpool JMU, June 2005

  19. Software Analysis • Main Programming Language • Java • C++ • Semantic Representation • XML • XHTML + Voice • SMIL • RDF Schema • MPEG-7 • Decision Making • HUGIN (Bayesian Networks) (Hugin 2004) • FuzzyJ Toolkit (Fuzzy Logic) (NRC 2004) PGNET, Liverpool JMU, June 2005

  20. Project Schedule PGNET, Liverpool JMU, June 2005

  21. Conclusion • An intelligent multimodal distributed platform hub called MediaHub will be developed • MediaHub will interpret and generate semantic representations of multimodal input and output • MediaHub will perform fusion and synchronisation of language and vision data • Unique contribution of MediaHub is to provide a new method of decision making • MediaHub will be tested within an existing multimodal platform (e.g. CONFUCIUS) PGNET, Liverpool JMU, June 2005

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