Context Driven Search Ranking and Faceting

Transcript

1. Context Driven Search Ranking and Faceting Torsten Bøgh Köster CTO,

   shopping24 internet group

2. @tboeghk #cto, Search Technology Meetup #hamburg, #10YearsSolr, #roadbike, #landscapephotography Torsten

   Bøgh Köster | torsten.koester@s24.com | @tboeghk | developer.s24.com

3. e-commerce product search

4. related products on 3rd party websites

5. Open Source Power Delivered.

6. 10 years live on Apache Solr

7. highly customized solr

8. solr.cool extension directory

9. Search is contextless

10. Make search context aware

11. personalization

12. conversational context @chatshopper

13. category context

14. upfront decision for known queries query —> category

15. ambiguous queries „braun“

16. What about new, trending queries?

17. who wants to configure ∞ query entries?

18. (1) Detect category context through current search result inspection

19. Define contexts as Solr queries

20. represent category context definition as bitset Load JSON from Zookeeper

    Evaluate to BitSet in newSearcher event

21. BitSets are fun! docid —> boolean

22. testing current query against category context definitons

23. Build a PostFilter … QParserPlugin … Collector

24. decisions for a full search result

25. handle collisions

26. (2) faceting depending on detected context

27. Configure facets per context

28. Add own component to configure faceting

29. (3) apply ranking depending on detected context

30. Change scoring during scoring by breaking deferring delegation

31. None

32. Gets called for each docid and returns the scroe

33. None

34. (4) Make it fast

35. Introduce a bounded ranking buffer

36. Fill a bounded buffer. Decide context upon full buffer or

    finish() call

37. Next: Make it stable, Make it better

38. None

39. Image Credits https://www.flickr.com/photos/salihan/7040163843 https://www.flickr.com/photos/scrapthispack/2034500846 https://www.flickr.com/photos/135652812@N05/23375030520 https://www.flickr.com/photos/cozymax/10345521973 https://www.flickr.com/photos/juliegallo/9503466665 https://www.flickr.com/photos/platform3/11350560215 https://www.flickr.com/photos/photo64/6341135231 https://www.flickr.com/photos/opoterser/3760102198

    https://www.flickr.com/photos/smemon/14931786713 https://www.flickr.com/photos/cyclotourist/25362023650 https://www.flickr.com/photos/lain32/8321828310 https://www.flickr.com/photos/oter/5238799883 https://www.flickr.com/photos/clement127/16056864658 https://www.flickr.com/photos/brendanlynch/4765970880 https://www.flickr.com/photos/rrenomeron/8771565313/ https://www.flickr.com/photos/eugenuity/34113551603 https://www.flickr.com/photos/justinwkern/4535555236