Mixed Initiative Search - Prof. Dr. Maarten de Rijke
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Presentation from Prof. Dr. Maarten de Rijke, Professor of Information Retrieval at the University of Amsterdam, at Textkernel's Intelligent Machines and the Future of Recruitment on June 2nd in Amsterdam. Many information needs concern people. Effective retrieval methods for people search require effective representation, discovery and presentation methods. In this presentation Maarten de Rijke surveys recent entity retrieval methods, recent methods for discovering aspects of entities, and emerging ideas to blend the outcomes of such methods as part of mixed initiative conversational scenarios, where the search engine does not just answer questions but explores options and even generates questions to help a searcher improve their effectiveness.
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Mixed Initiative Search - Prof. Dr. Maarten de Rijke
- 1. This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partnerspartners This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners Mixed initiative search Maarten de Rijke
- 2. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search • Based on joint work with David Graus, Evangelos Kanoulas, Edgar Meij, Daan Odijk, Ridho Reinanda, Manos Tsagkias, Christophe Van Gysel, Nikos Voskarides, Wouter Weerkamp, Marcel Worring, Masrour Zoghi
- 3. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nl It’s all about entities
- 4. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search • Entities (people, locations, organizations, …) play central organizing role • In search • in web search, up to 70% of the queries are entity queries (Lin et al., 2012; Guo et al., 2011) • in academic search, the proportion of queries that contain entities is over 93% (Li et al., 2016) • increasingly, entities are retrievable items It’s all about entities
- 5. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search search
- 6. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search search mothers
- 7. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search
- 8. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search
- 9. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search
- 10. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search
- 11. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search
- 12. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search
- 13. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search
- 14. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search
- 15. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search
- 16. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nl Where are we now?
- 17. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search • Diverse intents • You know an entity by the stuff it hangs out with • Words • Facets • Entities • Organizations relations • … Information needs around entities
- 18. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search • Mine search logs to discover aspects • Prioritizing entity display • Providing direct action • “Query-less” entity-oriented diversification • Supporting complex search tasks • Knowledge base design/construction Discovering entity aspects
- 19. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search • Automatically generate human-readable explanations of related entities • Mine large volumes of text: fragments in which entities co-occur Entity relations
- 20. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search • Update description of long tail entity with information from range of sources • Learn to adjust representations based on clicks • Enriching the representation with additional descriptions helps improve retrieval • Continuously updating the ranker helps Entity updates KBER DCER sim sim
- 21. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search • Unsupervised model construction, efficient entity capabilities query, and semantic matching between query terms and candidate entities • Learn mappings between words and entities, as well as distributed representations of words and entities • Words that are strongly evidential for particular products are projected nearby those products • Very effective, highly scalable Unsupervised entity ranking
- 22. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nl What is next?
- 23. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search
- 24. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search document list action at query state st user environment examine document list generate implicit feedback reward rt implicit feedback evaluation measureretrieval system agentagent action at environment reward rt state st Image taken from K. Hofmann, S. Whiteson, and M. de Rijke. Balancing exploration and exploitation in online learning to rank. In ECIR 2011, April 2011.
- 25. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search • Go beyond the traditional search engine result page • What should the search engine say? • When should it switch? With all of that information around an entity
- 26. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search • Old-fashioned search engine result page (SERP)? • Direct answer? • Engage in a conversation? • Generate a news article? • Produce a timeline? • Multi-document summary? • Wikipedia page? What should a search engine say?
- 27. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search • Working with media professionals in an audiovisual archive • It is their business to create narratives • Wrapping extensive interviewing rounds with media professionals • Next • Annotate and mine semantic aspects of narratives media professionals create • Learning templates for SERP generation • Learning to re-order elements on the SERP • Generating natural language to connect the elements Example: narrative search
- 28. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search Example: Engage in a conversation
- 29. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search • Run an A/B test • Explore online • Learn from historical data (“counterfactual reasoning”) When should should it switch?
- 30. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search Would people buy it?
- 31. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search document list action at query state st user environment examine document list generate implicit feedback reward rt implicit feedback evaluation measureretrieval system agentagent action at environment reward rt state st Based on K. Hofmann, S. Whiteson, and M. de Rijke. Balancing exploration and exploitation in online learning to rank. In ECIR 2011, April 2011. answer format + answers
- 32. This is the presentation title this subline can be used for authors This is the presentation title this subline can be used for authors partners This is the presentation title this subline can be used for authors partners www.amsterdamdatascience.nlMixed initiative search All content represents the opinion of the author(s), which is not necessarily shared or endorsed by their employer and/or sponsors.