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Research

Interests

  • Game theory: equilibrium concepts, oligopolies, 2-stage games.
  • Blockchains: cryptoeconomics, incentives.
  • Revenue management: pricing, unimodality conditions, comparative statics.
  • Strategic behavior: voting systems, queues.

Journal Publications

  1. S. Leonardos & C. Melolidakis, Endogenizing the cost parameter in Cournot oligopoly, International Game Theory Review, to appear. [arxiv]
  2. S. Leonardos & C. Koki, Coalitions & Voting Power in the Greek Parliament of 2012: A Case Study, Homo Oeconomicus, (2019). [journal]
  3. S. Leonardos & C. Melolidakis, On the commitment value and commitment optimal strategies in bimatrix games, International Game Theory Review, (2018). [journal]

Conference Publications

  1. Best paper award C. Koki, S. Leonardos and G. Piliouras, Do Cryptocurrency Prices Camouflage Latent Economic Effects? A Bayesian Hidden Markov Approach, MDPI Proceedings – 3rd Annual Decentralized Conference 2019. [MDPI Proceedings]
  2. Best paper award S. Leonardos, N. Leonardos and G. Piliouras, Oceanic Games: Centralization Risks and Incentives in Blockchain Mining,  in International Conference on Mathematical Research for Blockchain Economy, (2019). [arxiv]
  3. Best paper award S. Leonardos, D. Reijsbergen and G. Piliouras, Weighted Voting on the Blockchain: Improving Consensus in Proof of Stake ProtocolsIEEE – International Conference on Blockchain and Cryptocurrency, (2019). [IEEE Xplore]
  4. V. Buterin, D. Reijsbergen, S. Leonardos and G. Piliouras, Incentives in Ethereum’s Hybrid Casper Protocol, IEEE – International Conference on Blockchain and Cryptocurrency, (2019). [IEEE Xplore]

Refereed Book Chapters

  1. S. Leonardos & C. Koki, Political Systems and Indicators: Change and Continuity in Germany and Greece. German-Greek Yearbook of Political Economy vol.3 (invited), to appear. [pdf]
  2. C. Koki, S. Leonardos & C. Melolidakis, Measuring Market Performance with Stochastic Demand: Price of Anarchy and Price of Uncertainty, LNCS/LNAI Springer Series, (2018). [book chapter]
  3. C. Koki, S. Leonardos & C. Melolidakis, Comparative Statics via Stochastic Orderings in a Two-Echelon Market with Upstream Demand UncertaintyAIRO Springer Series, (2019). [book chapter]
  4. Y. Dimitrakopoulos, A. Economou and S. Leonardos, Customer equilibrium behavior in a Markovian queue with an on/off information mechanism (short paper)QTNA2019, LNCS Springer Series, (2019). [pdf]

Working Papers

  • C. Koki, S. Leonardos and G. Piliouras, A Peek into the Unobservable: Hidden States and Bayesian Inference for the Bitcoin and Ether Price Series, under submission. [arxiv]
  • Y. Dimitrakopoulos, A. Economou and S. Leonardos, Strategic customer behavior in a queueing system with alternating information structureProduction and Operations Management, review & resubmit. [arxiv]
  • S. Leonardos, D. Reijsbergen, G. Piliouras, Weighted Voting on the Blockchain: Improving Consensus in Proof of Stake Protocols, International Journal of Network Management, submitted. [arxiv]
  • V. Buterin, D. Reijsbergen, S. Leonardos & G. Piliouras, Incentives in Ethereum’s Hybrid Casper Protocol, International Journal of Network Management, submitted. [arxiv]
  • S. Leonardos, D. Reijsbergen & G. Piliouras, PRESTO: A Systematic Framework for Blockchain Consensus Protocols, IEEE Transactions in Engineering Management, submitted. [paper]
  • S. Leonardos & C. Melolidakis, A Class of Distributions for Linear Demand Markets, Operations Research Perspectives, submitted. [arxiv]
  • S. Leonardos & C. Melolidakis, Monopoly Pricing in a Vertical Market with Demand Uncertainty, European Journal of Operational Research, submitted. [arxiv]
  • S. Leonardos & C. Melolidakis, A Note on Equilibrium Uniqueness in Cournot Competition with Demand Uncertainty, The B.E. Journal of Theoretical Economics, minor revision. [arxiv]
  • S. Leonardos & C. Melolidakis, A Note on the Mean Residual Function of the Cantor Distribution, Journal of Applied Analysis, submitted. [arxiv]
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