Evolution of  Two Sided Markets - Yury Lifshits - WSDM 2010
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Evolution of Two Sided Markets - Yury Lifshits - WSDM 2010 Presentation Transcript

  • 1. Evolution of Two-Sided Markets Yury Lifshits @ yurylifshits Yahoo! Research http://yury.name Ravi Kumar Yahoo! Research http://research.yahoo.com/Ravi_Kumar Andrew Tomkins Google Research http://www.tomkinshome.com/andrew/ paper: http:// bit.ly/twosided
  • 2. Private Structured Real-time Copyrighted
  • 3.
    • a ’ = V( b ) – a
    • b ’ = W( a ) - b
    Attachment curves model preferential attachment crossing the chasm social influence
  • 4. Market shares convergence
  • 5.
    • Two-sided markets:
    • algorithmic perspective
    • Model: Attachment curves
    • Convergence result
    • Coalitions
    • Measurements
  • 6. Publishers Advertisers
  • 7.  
  • 8. Private Structured Real-time Copyrighted
  • 9.
    • Craigslist
    • Hotjobs, careerBuilder, Monster, LinkedIn
    • ebay, Amazon Merchants
    • eLance, guru.com, freelance.ru
    • Mechanical Turk, youDo, translated.by
    • AdWords, AdSense, DoubleClick, RightMedia
    • iTunes, lala, rhapsody, pandora, last.fm
    • OpenTable , RedBeacon
    • Yelp, Yahoo! Local
    • Threadless, Cafemax
    • Charities, Kickstarter
    • Facebook m arketplace, Yahoo! Newspaper Consortium
    • shopping.com, shopping.yahoo.com
    • eHarmony, Match.com, Yahoo! Personals
    • Upcoming, Facebook Events, evite, eventbrite, ticketmaster, TandP.ru
    • Expedia, Orbitz, Yahoo! Travel
    • CouchSurfing, HospitalityClub, AirBnB
    • Hulu, justin.tv, ustream
    • Alibaba.com
    • Carfax, Experian, Bloomberg
  • 10. Research Agenda
    • Evolution
      • Network effect
      • Market structure
      • Evolution prediction
    • Coalitions
      • When centralization will happen?
      • When does it make sense to form a coalition?
    • Investment strategies
      • When to invest? Which side of the market? Critical mass?
      • Can we predict opportunities for snowball dynamics?
  • 11. platform platform platform a% market share b% market share a’(t) = ? b’(t) = ?
  • 12.
    • a ’ = b
    • b ’ = a
  • 13.
    • a ’ = b – a
    • b ’ = a – b
  • 14.
    • a ’ = V( b ) – a
    • b ’ = W( a ) - b
    Attachment curves model preferential attachment crossing the chasm social influence
  • 15. Independent platforms a1 a4 a2 a3 a1 a4 a3 a2
  • 16. Coalition Joint database
  • 17. Market Shares Dynamics
    • Theorem
    • Market shares stay the same
    A ’ = B – A B ’ = A - B
  • 18. Technical Coalition
    • Theorem
    • If all market shares are below 1/sqrt(k)
    • coalition is profitable for all distributors
    • Corollary
    • Coalitions are not monotone
    • Example: 5 : 4 : 1 : 1
  • 19. Business Coalition
    • Theorem
    • One can re-distribute revenue for full
    • coalition in such a way that no subset
    • has an incentive to walk away and
    • form a sub-coalition.
  • 20. Stackoverflow.com
  • 21. Stackoverflow.com
  • 22. Future work
    • Algorithm for solving attachment curve equation (starting position -> stable state)
    • Stability under noise?
    • Predictive power?
    • Revenue redistribution for coalitions?
    • Investment strategies?
  • 23.
    • Thanks!
    • @ yurylifshits just presented “Evolution
    • of Two-Sided Markets” at #wsdm
    • http:// bit.ly/twosided
    • Please, retweet 
  • 24.
    • An agent joins if number of opposite-side connections to current platform users is at least T
    • You can pay uninterested agent to join
    • How much do you have to pay to get everyone on board?
    Open Problem
  • 25. answers.yahoo.com
  • 26. answers.yahoo.com
  • 27.  
  • 28.  
  • 29.