Decidability and complexity of threshold description logics induced by concept similarity measures
Decidability and complexity of threshold description logics induced by concept similarity measures
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由概念相似性度量引起的阈值描述逻辑的可判定性和复杂性
DOI:
10.1145/3019612.3019715
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Oliver Fernández Gil.
中科院分区:
文献类型:
--
作者:
Franz Baader;Oliver Fernández Gil.
In a recent research paper, we have proposed an extension of the lightweight Description Logic (DL) εL in which concepts can be defined in an approximate way. To this purpose, the notion of a graded membership functionm, which instead of a Boolean membership value 0 or 1 yields a membership degree from the interval [0, 1], was introduced. Threshold concepts can then, for example, require that an individual belongs to a conceptCwith degree at least 0.8. Reasoning in the threshold DL τε;L(m) obtained this way of course depends on the employed graded membership functionm. The paper defines a specific such function, called deg, and determines the exact complexity of reasoning in τε;L(deg). In addition, it shows how concept similarity measures (CSMs) ∼ satisfying certain properties can be used to define graded membership functionsm∼, but it does not investigate the complexity of reasoning in the induced threshold DLs τε;L(m∼). In the present paper, we start filling this gap. In particular, we show that computability of ∼ implies decidability of τε;L(m∼), and we introduce a class of CSMs for which reasoning in the induced threshold DLs has the same complexity as in τε;L(deg).
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DOI:
10.1109/incos.2013.77
发表时间:
2013
期刊:
2013 5th International Conference on Intelligent Networking and Collaborative Systems
影响因子:
--
作者:
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影响因子:
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DOI:
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发表时间:
2016
期刊:
Artif. Intell.
影响因子:
--
作者:
F. Baader;O. Gil
通讯作者:
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