nep-spo New Economics Papers
on Sports and Economics
Issue of 2022‒05‒23
two papers chosen by
Humberto Barreto
DePauw University

  1. AI, Ageing and Brain-Work Productivity: Technological Change in Professional Japanese Chess By Eiji Yamamura; Ryohei Hayashi
  2. A Characterization of Draft Rules By Jacob Coreno; Ivan Balbuzanov

  1. By: Eiji Yamamura; Ryohei Hayashi
    Abstract: Using Japanese professional chess (Shogi) players records in the novel setting, this paper examines how and the extent to which the emergence of technological changes influences the ageing and innate ability of players winning probability. We gathered games of professional Shogi players from 1968 to 2019. The major findings are: (1) diffusion of artificial intelligence (AI) reduces innate ability, which reduces the performance gap among same-age players; (2) players winning rates declined consistently from 20 years and as they get older; (3) AI accelerated the ageing declination of the probability of winning, which increased the performance gap among different aged players; (4) the effects of AI on the ageing declination and the probability of winning are observed for high innate skill players but not for low innate skill ones. This implies that the diffusion of AI hastens players retirement from active play, especially for those with high innate abilities. Thus, AI is a substitute for innate ability in brain-work productivity.
    Date: 2022–04
  2. By: Jacob Coreno; Ivan Balbuzanov
    Abstract: This paper considers the problem of allocating bundles of heterogeneous and indivisible objects to agents, when monetary transfers are not allowed and agents reveal only ordinal preferences over objects, e.g., allocating players' contract rights to teams in professional sporting leagues. Preferences over objects are extended to incomplete preferences over bundles using pairwise dominance. We provide a simple characterization of the class of draft rules: they are the only allocation rules satisfying $\textit{efficiency}$, $\textit{respectfulness of the priority}$, $\textit{envy-freeness up to one object}$ and $\textit{resource-monotonicity}$. We also prove two impossibility theorems: (i) $\textit{non-wastefulness}$, $\textit{respectfulness of the priority}$ and $\textit{envy-freeness up to one object}$ are incompatible with $\textit{weak strategy-proofness}$; (ii) $\textit{efficiency}$ and $\textit{envy-freeness up to one object}$ are incompatible with $\textit{weak strategy-proofness}$. If agents may declare some objects unacceptable, then draft rules are characterized by $\textit{efficiency}$, $\textit{respectfulness of the priority}$, $\textit{envy-freeness up to one object}$, $\textit{resource-monotonicity}$ together with a mild invariance property called $\textit{truncation-invariance}$.
    Date: 2022–04

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