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LPAR
2012
Springer
14 years 2 months ago
Querying Proofs
We motivate and introduce a query language PrQL designed for inspecting machine representations of proofs. PrQL natively supports hiproofs which express proof structure using hiera...
David Aspinall, Ewen Denney, Christoph Lüth
ICFP
2004
ACM
16 years 6 months ago
A sound (and complete) model of contracts
Even in statically typed languages it is useful to have certain invariants checked dynamically. Findler and Felleisen gave an algorithm for dynamically checking expressive higher-...
Matthias Blume, David A. McAllester
CONCUR
2009
Springer
16 years 1 months ago
Probabilistic Weighted Automata
Nondeterministic weighted automata are finite automata with numerical weights on transitions. They define quantitative languages L that assign to each word w a real number L(w). ...
Krishnendu Chatterjee, Laurent Doyen, Thomas A. He...
SACMAT
2009
ACM
16 years 1 months ago
Access control policy combining: theory meets practice
Many access control policy languages, e.g., XACML, allow a policy to contain multiple sub-policies, and the result of the policy on a request is determined by combining the result...
Ninghui Li, Qihua Wang, Wahbeh H. Qardaji, Elisa B...
DIAGRAMS
2008
Springer
15 years 8 months ago
Graphical Revelations: Comparing Students' Translation Errors in Graphics and Logic
We are interested in developing a better understanding of what it is that students find difficult in learning logic. We use both natural language and diagram-based methods for teac...
Richard Cox, Robert Dale, John Etchemendy, Dave Ba...