Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Knowledge And The Action Description Language A   We introduce Ak, an extension of the action description language A (Gelfond
and Lifschitz, 1993) to handle actions which affect knowledge. We use sensing
actions to increase an agent's knowledge of the world and non-deterministic
actions to remove knowledge. We include complex plans involving conditionals
and loops in our query language for hypothetical reasoning. We also present a
translation of Ak domain descriptions into epistemic logic programs.

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The categories of this paper are: supr-con
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The categories of this paper are: astro-ph
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The categories of this paper are: q-alg
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The categories of this paper are: funct-an
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The categories of this paper are: nlin
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The categories of this paper are: q-bio
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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: quant-ph
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The categories of this paper are: solv-int