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» Context-Free Languages via Coalgebraic Trace Semantics
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CALCO
2005
Springer
126views Mathematics» more  CALCO 2005»
13 years 10 months ago
Context-Free Languages via Coalgebraic Trace Semantics
In this paper we identify context-free grammars as coalgebras. To obtain the associated context-free languages (consisting of only finite-length strings) we introduce a general a...
Ichiro Hasuo, Bart Jacobs
IFIPTCS
2010
13 years 2 months ago
A Semiring-Based Trace Semantics for Processes with Applications to Information Leakage Analysis
Abstract. We propose a framework for reasoning about program security building on language-theoretic and coalgebraic concepts. The behaviour of a system is viewed as a mapping from...
Michele Boreale, David Clark, Daniele Gorla
ESOP
2007
Springer
13 years 11 months ago
Probabilistic Anonymity Via Coalgebraic Simulations
There is a growing concern on anonymity and privacy on the Internet, resulting in lots of work on formalization and verification of anonymity. Especially, importance of probabilis...
Ichiro Hasuo, Yoshinobu Kawabe
ICML
2005
IEEE
14 years 5 months ago
Exploiting syntactic, semantic and lexical regularities in language modeling via directed Markov random fields
We present a directed Markov random field (MRF) model that combines n-gram models, probabilistic context free grammars (PCFGs) and probabilistic latent semantic analysis (PLSA) fo...
Shaojun Wang, Shaomin Wang, Russell Greiner, Dale ...
JLP
2006
126views more  JLP 2006»
13 years 4 months ago
Compositional modeling and refinement for hierarchical hybrid systems
In this paper, we develop a theory of modular design and refinement of hierarchical hybrid systems. In particular, we present compositional trace-based semantics for the language ...
Rajeev Alur, Radu Grosu, Insup Lee, Oleg Sokolsky