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© 2008 Endeca Technologies, Inc. All rights reserved. Is Search Broken?! Daniel Tunkelang Chief Scientist, Endeca.

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Presentation on theme: "© 2008 Endeca Technologies, Inc. All rights reserved. Is Search Broken?! Daniel Tunkelang Chief Scientist, Endeca."— Presentation transcript:

1 © 2008 Endeca Technologies, Inc. All rights reserved. Is Search Broken?! Daniel Tunkelang Chief Scientist, Endeca

2 © 2008 Endeca Technologies, Inc. All rights reserved. 2 howdy! 1992: Bachelor’s + Master’s from MIT in CS + Math 1998: PhD from CMU in CS (ACO program) 1999: Co-founded Endeca! 2008: ???

3 © 2008 Endeca Technologies, Inc. All rights reserved. 3 overview Who is Endeca? Is search broken? If it is, what can we do about it?

4 © 2008 Endeca Technologies, Inc. All rights reserved. 4 who / what is endeca? Software to help people explore, analyze, and understand complex information, guiding them to unexpected insights and better decisions customers $108M revenue in 2007.

5 © 2008 Endeca Technologies, Inc. All rights reserved. 5 some of our customers

6 © 2008 Endeca Technologies, Inc. All rights reserved. 6 Is search broken?

7 © 2008 Endeca Technologies, Inc. All rights reserved. 7 Search has hit a wall.

8 © 2008 Endeca Technologies, Inc. All rights reserved. 8 search hits a wall in ecommerce

9 © 2008 Endeca Technologies, Inc. All rights reserved. 9 search hits a wall in knowledge management Current Search: it outsourcing

10 © 2008 Endeca Technologies, Inc. All rights reserved. 10 search even hits a wall on the web Results 1-10 out of about 344,000,000 for ir

11 © 2008 Endeca Technologies, Inc. All rights reserved. 11 But is search broken?

12 © 2008 Endeca Technologies, Inc. All rights reserved. 12 the accountants don’t think so

13 © 2008 Endeca Technologies, Inc. All rights reserved. 13 most users don’t think so 75

14 © 2008 Endeca Technologies, Inc. All rights reserved. 14 or do they? 78% wish search engines could read their minds. What frustrates users most? –25%: deluge of results –24%: too many paid listings –19%: inability to understand their keywords –19%: disorganized / random results The State of Search Autobytel & Kelton Research, Oct ’07

15 © 2008 Endeca Technologies, Inc. All rights reserved. 15 web search vs. enterprise search “Search on the internet is solved. I always find what I need. But why not in the enterprise? Seems like a solution waiting to happen.” - a Fortune 500 CTO

16 © 2008 Endeca Technologies, Inc. All rights reserved. 16 Can theory help?

17 © 2008 Endeca Technologies, Inc. All rights reserved. 17 precision = fraction of retrieved documents that are relevant recall = fraction of relevant documents that are retrieved retrieved documents relevant documents

18 © 2008 Endeca Technologies, Inc. All rights reserved. 18 the truth, nothing but the truth why improve precision?

19 © 2008 Endeca Technologies, Inc. All rights reserved. 19 the whole truth, why improve recall?

20 © 2008 Endeca Technologies, Inc. All rights reserved. 20 the truth, the whole truth, nothing but the truth what we want…

21 © 2008 Endeca Technologies, Inc. All rights reserved. 21 recall precision but there is a trade-off…

22 © 2008 Endeca Technologies, Inc. All rights reserved. 22 Precision…to avoid annoying users with irrelevant results? which should we favor? Recall…to make sure we don’t throw away results the user wants / needs?

23 © 2008 Endeca Technologies, Inc. All rights reserved. 23 Enough stalling…what’s the answer?!

24 © 2008 Endeca Technologies, Inc. All rights reserved. 24 depends on what you want vs.

25 © 2008 Endeca Technologies, Inc. All rights reserved. 25 you get what you pay for There are easy use cases… –30% of queries are navigational. –30% of queries lead to Wikipedia pages. –Users won’t pay, but advertisers will! …and hard use cases. –Queries where recall matters. –Exploratory search. –Enterprises will pay for insight.

26 © 2008 Endeca Technologies, Inc. All rights reserved. 26 Great, bring on the insight!

27 © 2008 Endeca Technologies, Inc. All rights reserved. 27 technology alone can’t provide insight The system can’t read your mind. Your spouse / best friend can’t read your mind. Sometimes you can’t read your own mind.

28 © 2008 Endeca Technologies, Inc. All rights reserved. 28 So should we just give up?

29 © 2008 Endeca Technologies, Inc. All rights reserved. 29 technology is a catalyst Computers are good at analysis. People are good at using what they know. How do we get the best of both worlds?

30 © 2008 Endeca Technologies, Inc. All rights reserved. 30 with apologies to luis von ahn

31 © 2008 Endeca Technologies, Inc. All rights reserved. 31 human-computer information retrieval Instead of guessing the user’s intent, optimize communication. De-emphasize the top ten documents; response is a set of documents. Think beyond single queries; support refinement and exploration.

32 © 2008 Endeca Technologies, Inc. All rights reserved. 32 recall precision hcir cheats the trade-off

33 © 2008 Endeca Technologies, Inc. All rights reserved. 33 But how do we implement HCIR?

34 © 2008 Endeca Technologies, Inc. All rights reserved. 34 endeca's approach: guided summarization Set retrieval that responds to queries with –an overview of the user's current context. –an organized set of options for incremental exploration. Contextual summaries of document sets optimize system’s communication with user. Query refinement options optimize user’s communication with system.

35 © 2008 Endeca Technologies, Inc. All rights reserved. 35 guided summarization for ecommerce Matching Categories include: Appliances > Small Appliances > Irons & Steamers Appliances > Small Appliances > Microwaves & Steamers Bath > Sauna & Spas > Steamers Kitchen > Bakeware & Cookware > Cookware > Open Stock Pots > Double Boilers & Steamers Kitchen > Small Appliances > Steamers

36 © 2008 Endeca Technologies, Inc. All rights reserved. 36 guided summarization for KM

37 © 2008 Endeca Technologies, Inc. All rights reserved. 37 Guided summarization starts with faceted search.

38 © 2008 Endeca Technologies, Inc. All rights reserved. 38 facets 101

39 © 2008 Endeca Technologies, Inc. All rights reserved. 39 But faceted search isn’t enough…

40 © 2008 Endeca Technologies, Inc. All rights reserved. 40 showing the right facets: microwaves vs.

41 © 2008 Endeca Technologies, Inc. All rights reserved. 41 showing the right facets: ceiling fans

42 © 2008 Endeca Technologies, Inc. All rights reserved. 42 traditional topic taxonomy

43 © 2008 Endeca Technologies, Inc. All rights reserved. 43 dynamic topic facet Subject Electronic data processing (1002) Distributed processing (937) Parallel processing (619) Computer networks (562) Fault-tolerant-computing (365) Show more… Subject Artificial intelligence (227)High performance computing (244) Automatic theorem proving (9)History (11) Client/server computing (185)Information technology (145) Computer algorithms (110)Java (77) Computer architecture (162)Law and legislation (70) Computer networks (552)Logic, Symbolic and mathematical (16) Computer programs (139)Mathematics (70) Computer security (151)Mobile communication systems (54) Computer software (253)Operating systems (87) Computers (124)Parallel processing (619) Database management (277)Research (83) Distributed processing (937)Software engineering (197) Electronic data processing (1002)Supercomputers (139) Electronic digital computers (148)Web databases (54) Fault-tolerant computing (365)Wireless communication systems (97)

44 © 2008 Endeca Technologies, Inc. All rights reserved. 44 facets populated using entity extraction apple production

45 © 2008 Endeca Technologies, Inc. All rights reserved. 45 cutting through facets to show the big picture Search: storage

46 © 2008 Endeca Technologies, Inc. All rights reserved. 46 summarization: more than search and browse

47 © 2008 Endeca Technologies, Inc. All rights reserved. 47 guided summarization – a summary Guided summarization enables a dialog between the user and the data, enabling exploration and discovery.

48 © 2008 Endeca Technologies, Inc. All rights reserved. 48 The Moral

49 © 2008 Endeca Technologies, Inc. All rights reserved. 49 think outside the box Search works for many use cases. But not for some of the most valuable ones. Focus on human-computer information retrieval.

50 © 2008 Endeca Technologies, Inc. All rights reserved. 50 One More Thing

51 © 2008 Endeca Technologies, Inc. All rights reserved. 51 maybe we should treat search as a game

52 © 2008 Endeca Technologies, Inc. All rights reserved. 52 thank you Questions?


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