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Multimodal research in Linköping

Multimodal research in Linköping. Arne Jönsson NLPLAB/HCS/IDA. NLPLAB. Upper row: Pernilla , Sonia, Lena, Annika, Micke, Magnus Bottom row: Håkan , Lars A, Robert, Mustapha, Arne , Lise, Anders, Lars D Missing: Nils , Bertil, Pontus, Gen. Current research.

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Multimodal research in Linköping

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  1. Multimodal research in Linköping Arne Jönsson NLPLAB/HCS/IDA

  2. NLPLAB Upper row: Pernilla, Sonia, Lena, Annika, Micke, Magnus Bottom row: Håkan, Lars A, Robert, Mustapha, Arne, Lise, Anders, Lars D Missing: Nils, Bertil, Pontus, Gen

  3. Current research • (Multimodal) information access • Natural language interaction • Text and document analysis • Usability of multimodal interfaces • Open-Source and development methods

  4. Structured Information Dialogue system Dialogue system Interpreter Dialogue manager Generator

  5. Ex TV programme guide • Search for TV programs • Mediaterminal • Structured database • Spoken input • Developed from framework and method for iterative development • With Nokia Home Communication

  6. Demo

  7. Text and document analysis Unstructured documents Q&A Structured Information Language analysis MT

  8. Ex. AskRSV • Information extraction from text document • Simple Q&A-system • With Ida Infront

  9. 24 pages unstructured text Ex. taxation brochure

  10. THING EVENT ACTOR OBJECT PAPER DATE TAXATION TAX EVENT PEOPLE ORG. COMP. PUBL TAX-RETURN ASSET DEBT INCOME TRANSACTION Domain ontology in ASK-RSV • Taxonomy of a limited set of objects, events, properties and relations in the tax domain • Only IS-A and synonymy relations

  11. Unstructured documents Structured Information Dialogue system Language analysis Lexicon Grammar Ontology Combined system

  12. Shared knowledge sources • Ontology, lexicon and grammar • Different demands from IE and DS • Design • Development • Corpus analysis, user • Background system, database • Automatic update

  13. BirdQuest • Bird encyclopaedia • Tagged, templates • Corpus with user questions • Analysed • Based on dialogue systems framework

  14. Ötraf • Time tables from local bus company • Multimodal system • Dialogue • Handling of spatial and temporal expressions

  15. Studies of multimodal interaction • Wizard of Oz-simulation • Feedback study • User’s experience • Interviews, questionnaires • Various dimensions: control, cooperation, ease of use, efficiency, anxiety, hability etc • Three conditions • No spoken feedback • Limited spoken feedback • Full spoken feedback • 30 subjects

  16. Results • All or nothing • More like a human in the full feedback condition • Before the study subjects wanted to have a timetable for the task, after they preferred a human • No difference in experienced control and cooperation • The speech synthesis better in full feedback mode • Same voice

  17. Open source • Share research results between research groups • Stimulate exchange and co-operation • Language technology readily available for industry • Increased use and insights • The companies do their own prototype development • Robust code • nlpFarm http://sourceforge.net/projects/nlpfarm/

  18. http://sourceforge.net/projects/nlpfarm/

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