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Evolution of  Two Sided Markets - Yury Lifshits - WSDM 2010
 

Evolution of Two Sided Markets - Yury Lifshits - WSDM 2010

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

    • 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
    • Private Structured Real-time Copyrighted
      • a ’ = V( b ) – a
      • b ’ = W( a ) - b
      Attachment curves model preferential attachment crossing the chasm social influence
    • Market shares convergence
      • Two-sided markets:
      • algorithmic perspective
      • Model: Attachment curves
      • Convergence result
      • Coalitions
      • Measurements
    • Publishers Advertisers
    •  
    • Private Structured Real-time Copyrighted
      • 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
    • 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?
    • platform platform platform a% market share b% market share a’(t) = ? b’(t) = ?
      • a ’ = b
      • b ’ = a
      • a ’ = b – a
      • b ’ = a – b
      • a ’ = V( b ) – a
      • b ’ = W( a ) - b
      Attachment curves model preferential attachment crossing the chasm social influence
    • Independent platforms a1 a4 a2 a3 a1 a4 a3 a2
    • Coalition Joint database
    • Market Shares Dynamics
      • Theorem
      • Market shares stay the same
      A ’ = B – A B ’ = A - B
    • 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
    • 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.
    • Stackoverflow.com
    • Stackoverflow.com
    • Future work
      • Algorithm for solving attachment curve equation (starting position -> stable state)
      • Stability under noise?
      • Predictive power?
      • Revenue redistribution for coalitions?
      • Investment strategies?
      • Thanks!
      • @ yurylifshits just presented “Evolution
      • of Two-Sided Markets” at #wsdm
      • http:// bit.ly/twosided
      • Please, retweet 
      • 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
    • answers.yahoo.com
    • answers.yahoo.com
    •  
    •  
    •