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NewsBoy: an interactive news retrieval system Joemon M Jose The Information Retrieval Group Department of Computing Science University of Glasgow Email:- jj@dcs.gla.ac.uk http://www.dcs.gla.ac.uk/~jj Outline Background Online News retrieval Scenario

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newsboy an interactive news retrieval system

NewsBoy: an interactive news retrieval system

Joemon M Jose

The Information Retrieval Group

Department of Computing Science

University of Glasgow

Email:- jj@dcs.gla.ac.uk

http://www.dcs.gla.ac.uk/~jj

UITV 2004

outline
Outline
  • Background
  • Online News retrieval
  • Scenario
  • Personalisation and Presentation Strategies
  • System interface
  • Future Work
background
Background
  • news programmes
    • Multiple channels
    • Regular update
    • Information overload
  • User requirement
    • May not be interested in all news
    • Need an overview
    • Interested in selected topics
    • Interested in latest news
information retrieval
Information Retrieval
  • Users information need (Query)
  • Retrieval strategies
  • Interactive issues
    • Browsing, results presentation
  • Embedded in other applications
  • Personalisation
    • Adaptive, context sensitive retrieval
  • Online news retrieval
newsflash system
NewsFlash System

We present a world exclusive - Saddam Hussein in his own words….At the weekend, the veteran labour politican Tony Benn travelled to Baghdad to meet and interview the Iraqi President….You are conscious of the role that Iraqis have set out for themselves, inspired by their own culture, their civilization and their role in human history….Having said that, the Iraqis are committed to their rights as much as they are committed to the rights of others

video indexing retrieval
Video Indexing & Retrieval
  • Video programmes + Subtitles
    • Hauppauge video capture card
    • AVI file format, DivX codec
  • Video Shot segmentation
    • Result of a single camera action
    • Colour histogram based approach
  • Shot, subtitle alignment
    • Using time stamp in subtitles
  • Key frame extraction
    • thumbnails
retrieval and summarisation
Retrieval and summarisation
  • Shot + Corresponding teletext is considered as a document
  • Vector Space retrieval model
    • Representation using term vectors
    • Query is represented using query term vectors
    • Cosine similarity match
  • Query based summary generation
    • Summary of a document
    • Tailored with respect to the query
newsflash system8
NewsFlash System

We present a world exclusive - Saddam Hussein in his own words….At the weekend, the veteran labour politican Tony Benn travelled to Baghdad to meet and interview the Iraqi President….You are conscious of the role that Iraqis have set out for themselves, inspired by their own culture, their civilization and their role in human history….Having said that, the Iraqis are committed to their rights as much as they are committed to the rights of others

scenario
Scenario
  • TV Broadcasts
    • set-top box
  • Users
    • Information overload
    • Wants to see only interesting news
    • Couch potato culture
      • Remote control based interaction
        • No keyboard,
      • Relaxed environment
strategy issues
Strategy/Issues
  • Simple interaction strategies
    • Couch potato environment
  • Intuitive browsing
  • Remote Control
    • Up and down arrows
    • Colour coding
    • Selection buttons
  • Personalisation
user side
User side…
  • Wants to know late breaking news
      • Plane crash somewhere …
      • Any major events
  • Users have interests
    • Capturing their interests
      • Glasgow news, war on terrorism, football news etc.
      • Needs to capture their profiles
        • User specific input
        • From interaction
  • Needs to know about something
document clustering
Document Clustering
  • We cluster shots into groups
    • Single pass clustering
    • Based on the subtitles
  • As a result, we can present the daily news as groups of shots
    • Each group contains shots belongs to same topic
      • Crude story segmentation
learning techniques
Learning Techniques
  • Identify patterns of usage
    • If a person continuously accessing Glasgow weather reports
      • Then he/she is interested in that topic
    • Prioritise/weight areas of interest
      • Present according to priority
    • Present late breaking news
      • Role of clustering

iTV

profile learning
Profile Learning
  • Self-adaptive profile
    • Adapt without explicit feedback
    • Capture the profile with multiple factors
  • A profile P is comprised of a set of profiles pi
  • If a user views a document then that is used as an indication of interest
  • Similar to single pass clustering
  • Strength of profiles
presentation of personal news
Presentation of personal news
  • News shots are grouped with respect to the profiles
  • Highest strength profiles are shown first
evaluation issues
Evaluation Issues
  • Interaction strategies
  • Retrieval effectiveness
  • Quality of profiles
  • User satisfaction
  • Task based user-centred evaluation
    • Provide scenarios of usage
    • Continuous usage over a week
    • Logging and questionnaire based data capture
future work
Future Work
  • Topic & Event detection
    • Use of IR techniques
  • Story Segmentation
  • Personalisation techniques
    • Adaptation within search sessions
    • Long term adaptation
    • Group Personalisation
  • Integration with Internet
  • Evaluation Strategies