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CORR
2008
Springer
112views Education» more  CORR 2008»
14 years 10 months ago
Analytic aspects of the shuffle product
There exist very lucid explanations of the combinatorial origins of rational and algebraic functions, in particular with respect to regular and context free languages. In the searc...
Marni Mishna, Mike Zabrocki
TCS
2008
14 years 9 months ago
On the weight of universal insertion grammars
We study the computational power of pure insertion grammars. We show that pure insertion grammars of weight 3 can characterize all recursively enumerable languages. This is achiev...
Lila Kari, Petr Sosík
SIGMOD
2008
ACM
123views Database» more  SIGMOD 2008»
15 years 10 months ago
SchemaScope: a system for inferring and cleaning XML schemas
We present SchemaScope, a system to derive Document Type Definitions and XML Schemas from corpora of sample XML documents. Tools are provided to visualize, clean, and refine exist...
Geert Jan Bex, Frank Neven, Stijn Vansummeren
AICT
2007
IEEE
113views Communications» more  AICT 2007»
15 years 4 months ago
Ontologies to Support Call Control Policies
—The topic of policy-based management is introduced. Its specific application by the ACCENT project to call control is then discussed. The APPEL policy language supports regular ...
Gemma A. Campbell, Kenneth J. Turner
MFCS
2007
Springer
15 years 4 months ago
Height-Deterministic Pushdown Automata
Abstract. We define the notion of height-deterministic pushdown automata, a model where for any given input string the stack heights during any (nondeterministic) computation on t...
Dirk Nowotka, Jirí Srba