The Shapley Value of Tuples in Query Answering

The Shapley Value of Tuples in Query Answering
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查询应答中元组的 Shapley 值

DOI:
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发表时间:
2019
期刊:
International Conference on Database Theory
影响因子:
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通讯作者:
Moshe Sebag
Moshe Sebag
中科院分区:
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文献类型:
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作者:
Ester Livshits;L. Bertossi;B. Kimelfeld;Moshe Sebag

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我们研究应用Shapley值来量化 元组对查询答案的贡献。Shapley值是一个众所周知的 合作博弈论中的数值测度以及博弈的许多应用 评估参与者对联盟博弈的贡献的理论。它有 在20世纪50年代已经建立,理论上是合理的, 满足某些自然公理的唯一财富分配指标。 虽然这一价值已在几个领域进行了调查,但收到的信息很少。 注意数据管理。我们研究这一措施的背景下, 合取和聚合查询通过定义相应的联盟游戏。我们 提供计算的算法和复杂性理论结果, 基于Shapley的查询答案的贡献;以及我们提出的困难情况 近似算法
We investigate the application of the Shapley value to quantifying the contribution of a tuple to a query answer. The Shapley value is a widely known numerical measure in cooperative game theory and in many applications of game theory for assessing the contribution of a player to a coalition game. It has been established already in the 1950s, and is theoretically justified by being the very single wealth-distribution measure that satisfies some natural axioms. While this value has been investigated in several areas, it received little attention in data management. We study this measure in the context of conjunctive and aggregate queries by defining corresponding coalition games. We provide algorithmic and complexity-theoretic results on the computation of Shapley-based contributions to query answers; and for the hard cases we present approximation algorithms.
DOI: 10.1038/s42256-019-0138-9
发表时间: 2020-01-01
影响因子: 23.8
作者:
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通讯作者: Lee, Su-In
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影响因子: 5
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