2252 search results - page 179 / 451 » Regular expression patterns |
140
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COMBINATORICS
2000
15 years 4 months ago
2000
We find a generating function expressed as a continued fraction that enumerates ordered trees by the number of vertices at different levels. Several Catalan problems are mapped to...
121
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EDBT
2009
ACM
15 years 11 months ago
2009
ACM
We introduce a controlled form of recursion in XQuery, an inflationary fixed point operator, familiar from the context of relational databases. This operator imposes restriction...
148
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BDA
2006
15 years 5 months ago
2006
Surprisingly enough, there has been few investigations for typing references of semistructured data and XML documents. This paper build on a previous proposal [7] introducing simp...
137
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TAGT
1994
Springer
15 years 8 months ago
1994
Springer
An operation of concatenation is introduced for graphs. Then strings are viewed as expressions denoting graphs, and string languages are interpreted as graph languages. For a clas...
123
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RTCSA
1998
IEEE
15 years 8 months ago
1998
IEEE
In this paper, we propose a protocol synthesis method based on a partial order model (called event structures) for the class of context-free processes. First, we assign a unique n...