Learning Concepts Described by Weight Aggregation Logic
Learning Concepts Described by Weight Aggregation Logic
复制标题
学习权重聚合逻辑描述的概念
DOI:
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发表时间:
2020
期刊:
影响因子:
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通讯作者:
Nicole Schweikardt
中科院分区:
文献类型:
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作者:
Steffen van Bergerem;Nicole Schweikardt
We consider weighted structures, which extend ordinary relational structures by assigning weights, i.e. elements from a particular group or ring, to tuples present in the structure. We introduce an extension of first-order logic that allows to aggregate weights of tuples, compare such aggregates, and use them to build more complex formulas. We provide locality properties of fragments of this logic including Feferman-Vaught decompositions and a Gaifman normal form for a fragment called FOW1, as well as a localisation theorem for a larger fragment called FOWA1. This fragment can express concepts from various machine learning scenarios. Using the locality properties, we show that concepts definable in FOWA1 over a weighted background structure of at most polylogarithmic degree are agnostically PAC-learnable in polylogarithmic time after pseudo-linear time preprocessing.
DOI:
10.4230/lipics.icalp.2018.133
发表时间:
2018
期刊:
影响因子:
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作者:
Dietrich Kuske;Nicole Schweikardt
通讯作者:
Nicole Schweikardt
DOI:
10.1109/lics.2017.8005133
发表时间:
2017-03
期刊:
2017 32nd Annual ACM/IEEE Symposium on Logic in Computer Science (LICS)
影响因子:
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作者:
D. Kuske;Nicole Schweikardt
通讯作者:
D. Kuske;Nicole Schweikardt