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© 2009 Endeca Technologies, Inc. All rights reserved.
exploring semantic means
Daniel TunkelangChief Scientist, Endeca
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about me
• 1988 – 1992
• 1993 – 1998
• 1999 -
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overview
a means, not an end
exploratory search (HCIR)
searching for meaning
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do you like our owl?
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a means, not an end
The Semantic Web will improve the connections between knowledge on the web and software.
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so much religion, so little time
Skeptical reactions
• Practical feasibility
• An unrealized idea
• Censorship and privacy
• Doubling output formats
• Need
vs.
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what semantic means to (people who pay) me
using linguistic and statistical approaches to derive meaning from unstructured text
using semantic web approaches to represent meaning in content and query structure
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exploratory search
what i really care about
what you should care about too
especially if you see more toinformation seeking than google
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what would google do?
information Need query select from results
rank using IR model
USER:
SYSTEM:tf-idf PageRank
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assumptions of relevance-centric approach
• self-awareness
• self-expression
• model knows best
• answer is a document
• one-shot query
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human-computer information retrieval
• don’t just guess the user’s intent– optimize communication
• increase user responsibility and control– require and reward human intellectual effort
“Toward Human-Computer Information Retrieval”
Gary Marchionini
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let’s make this concrete
• Colleague:
Hey Daniel! You should check out what this guy Steve Pollitt’s been researching. Sounds right up your alley.
• Daniel:
Sure thing, I’ll look into it.
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google him!
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google scholar him?
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hcir-inspired interface
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tags provide summarization and guidance
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my information need evolves as i learn
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how did we do that?
• wisdom of crowds
• corpus analysis
• scope the problem
• target exploratory search
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if you prefer sports to computer science
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a more current slide…
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hcir can get fancy
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and there’s query structure side of semantics
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a more current example
All reviewers Reviewers Under 18
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one last example
“…As an example, I may be interested in the tensions between government and newly nationalized banks over the bonus culture that taxpayers are now funding (a hot topic in the UK currently)…”
--a commenter at The Noisy Channel, in a discussion of exploratory search for news
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still in private beta…
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following the information scent
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to explore the news
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in closing
let’s not quibble over protocols
exploration is the killer app for semantic tech
it’s real, and it’s fabulous!
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thank you
communication 1.0email: [email protected]
communication 2.0blog: http://thenoisychannel.com
twitter: http://twitter.com/dtunkelang