© 2009 Endeca Technologies, Inc. All rights reserved. exploring semantic means Daniel Tunkelang Chief Scientist, Endeca

© 2009 Endeca Technologies, Inc. All rights reserved. 2 about me 1988 – –

© 2009 Endeca Technologies, Inc. All rights reserved. 3 overview a means, not an end exploratory search (HCIR) searching for meaning

© 2009 Endeca Technologies, Inc. All rights reserved. 4 do you like our owl?

© 2009 Endeca Technologies, Inc. All rights reserved. 5 a means, not an end The Semantic Web will improve the connections between knowledge on the web and software.

© 2009 Endeca Technologies, Inc. All rights reserved. 6 so much religion, so little time Skeptical reactions Practical feasibility An unrealized idea Censorship and privacy Doubling output formats Need vs.

© 2009 Endeca Technologies, Inc. All rights reserved. 7 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

© 2009 Endeca Technologies, Inc. All rights reserved. 8 exploratory search what i really care about what you should care about too especially if you see more to information seeking than google

© 2009 Endeca Technologies, Inc. All rights reserved. 9 what would google do? information Needqueryselect from results rank using IR model USER: SYSTEM: tf-idf PageRank

© 2009 Endeca Technologies, Inc. All rights reserved. 10 assumptions of relevance-centric approach self-awareness self-expression model knows best answer is a document one-shot query

© 2009 Endeca Technologies, Inc. All rights reserved. 11 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

© 2009 Endeca Technologies, Inc. All rights reserved. 12 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.

© 2009 Endeca Technologies, Inc. All rights reserved. 13 google him!

© 2009 Endeca Technologies, Inc. All rights reserved. 14 google scholar him?

© 2009 Endeca Technologies, Inc. All rights reserved. 15 hcir-inspired interface

© 2009 Endeca Technologies, Inc. All rights reserved. 16 tags provide summarization and guidance

© 2009 Endeca Technologies, Inc. All rights reserved. 17 my information need evolves as i learn

© 2009 Endeca Technologies, Inc. All rights reserved. 18 how did we do that? wisdom of crowds corpus analysis scope the problem target exploratory search

© 2009 Endeca Technologies, Inc. All rights reserved. 19 if you prefer sports to computer science

© 2009 Endeca Technologies, Inc. All rights reserved. 20 a more current slide…

© 2009 Endeca Technologies, Inc. All rights reserved. 21 hcir can get fancy

© 2009 Endeca Technologies, Inc. All rights reserved. 22 and there’s query structure side of semantics

© 2009 Endeca Technologies, Inc. All rights reserved. 23 a more current example All reviewersReviewers Under 18

© 2009 Endeca Technologies, Inc. All rights reserved. 24 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

© 2009 Endeca Technologies, Inc. All rights reserved. 25 still in private beta…

© 2009 Endeca Technologies, Inc. All rights reserved. 26 following the information scent

© 2009 Endeca Technologies, Inc. All rights reserved. 27 to explore the news

© 2009 Endeca Technologies, Inc. All rights reserved. 28 in closing let’s not quibble over protocols exploration is the killer app for semantic tech it’s real, and it’s fabulous!

© 2009 Endeca Technologies, Inc. All rights reserved. 29 thank you communication communication 2.0 blog: twitter: