Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Parsing as Tree Traversal   This paper presents a unified approach to parsing, in which top-down,
bottom-up and left-corner parsers are related to preorder, postorder and
inorder tree traversals. It is shown that the simplest bottom-up and
left-corner parsers are left recursive and must be converted using an extended
Greibach normal form. With further partial execution, the bottom-up and
left-corner parsers collapse together as in the BUP parser of Matsumoto.

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The categories of this paper are: stat
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The categories of this paper are: econ
26
The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
2
The categories of this paper are: math
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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
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The categories of this paper are: hep-th