Cost-Sharing Games Cost-Sharing Games Pseudonyms in Cost-Sharing Games

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Cost-Sharing Games Cost-Sharing Games Pseudonyms in Cost-Sharing Games

Dominican University, US has reference to this Academic Journal, Pseudonyms in Cost-Sharing Games Cost-Sharing Games Which users so that service? At which price? Users Service Users willingness so that pay Cost-Sharing Games Users Service Cheat! Users willingness so that pay 1 0.6 0.6 1

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Cost-Sharing Games S Service Group Strategyproof (GSP): no cheating, even in consideration of coalitions Voluntary Participation, Consumer Sovereinity Budget Balance (BB) : sum payments = total cost Mechanisms Mechanisms are (essentially) methods so that divide the cost [Moulin 99, Moulin&Shenker01, Immorlica&Mahdian&Mirrokni05] Different prices do help [Bleischwitz&Monien&Schoppmann&Tiemann 07] GSP + BB Different prices 1 1/2 1/2 1/2 1/2 1 1 1/2 1/2 Change name! Internet: no identity verification Virtual identities, pseudonyms GSP + BB [Bleischwitz et al 07] 1/2 1/2

This work BB + GSP + Renameproof Symmetric games Deterministic No multiple bids no incentive so that change name Are there mechanisms that ?resist so that pseudonyms?? Main Results BB + GSP + Renameproof ? Identical prices Main Results BB + GSP + Renameproof ? Identical prices Reputationproof use reputation so that rank users reputation helps!

Basic Measurements: What do we want so that measure? What Makes Particle Detection Possible?

BB + GSP + Renameproof ? Identical prices S S a d a d Price does not depend on ?a? Price(S) BB + GSP + Renameproof ? Identical prices S S a d a d Price(S) 3 users: BB + GSP + Renameproof ? Identical prices S S a d a d 3 users: x1 x3 x2 x1 +x2 + x3 = 1 For all triangles!!

BB + GSP + Renameproof ? Identical prices S S a d a d 3 users: Color edges of complete graph on n nodes s.t. every triangle has weight 1 BB + GSP + Renameproof ? Identical prices S S a d a d 3 users: x1 +x2 + x3 = 1 BB + GSP + Renameproof ? Identical prices S S a d a d s+1 users: x1 +x2 + x3+x4 = 1 Color the complete hypergraph on n nodes s.t. every (s+1)-subset sums up so that 1

BB + GSP + Renameproof ? Identical prices LB(?, s) ? x(S) ? UB(?, s) s+1 users: Color the complete hypergraph on n nodes s.t. every (s+1)-subset sums up so that 1 q ?[1, ?] BB + GSP + Renameproof ? Identical prices LB(?, s) ? x(S) ? UB(?, s) s+1 users: Color the complete hypergraph on n nodes s.t. every (s+1)-subset sums up so that 1 q ?[1, ?] Prices are always bounded? Service Main Results BB + GSP + Renameproof ? Identical prices Reputationproof use reputation so that rank users reputation helps!

Renameproof R R a d a d 5 years ago 2min ago Renameproof R R a d a d Renameproof a Names a? a?

Reputationproof 2/3 1/3 1 Reputationproof 1 1/2 1/2 1/2 1/2 1 Conclusions Renameproof mechanisms identical prices randomization new mechanisms? Reputationproof mechanisms better reputation ? better price Social Cost of Cheap Pseudonyms [Friedman&Resnik 01] Sybil Attacks [Douceur 01, Cheng&Friedman 05] Falsenameproof [Yokoo&Sakurai&Matsubara 04]

Conclusions Renameproof mechanisms identical prices randomization Social Cost of Cheap Pseudonyms [Friedman&Resnik 01] Sybil Attacks [Douceur 01, Cheng&Friedman 05] Falsenameproof [Yokoo&Sakurai&Matsubara 04] Thank You Randomization? 1 2 1 2 1 GSP [BMST07] not GSP

Burnstein, Sergio Meteorologist

Burnstein, Sergio is from United States and they belong to Meteorologist and work for ABC15 News at 10 PM Sunday – KNXV-TV in the AZ state United States got related to this Particular Article.

Journal Ratings by Dominican University

This Particular Journal got reviewed and rated by Conclusions Renameproof mechanisms identical prices randomization Social Cost of Cheap Pseudonyms [Friedman&Resnik 01] Sybil Attacks [Douceur 01, Cheng&Friedman 05] Falsenameproof [Yokoo&Sakurai&Matsubara 04] Thank You Randomization? 1 2 1 2 1 GSP [BMST07] not GSP and short form of this particular Institution is US and gave this Journal an Excellent Rating.