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POPL
2005
ACM
14 years 8 months ago
Context logic and tree update
Spatial logics have been used to describe properties of treelike structures (Ambient Logic) and in a Hoare style to reason about dynamic updates of heap-like structures (Separatio...
Cristiano Calcagno, Philippa Gardner, Uri Zarfaty
POPL
2005
ACM
14 years 8 months ago
Permission accounting in separation logic
A lightweight logical approach to race-free sharing of heap storage between concurrent threads is described, based on the notion of permission to access. Transfer of permission be...
Richard Bornat, Cristiano Calcagno, Peter W. O'Hea...
VLDB
2006
ACM
124views Database» more  VLDB 2006»
14 years 7 months ago
Query optimization in XML structured-document databases
While the information published in the form of XML-compliant documents keeps fast mounting up, efficient and effective query processing and optimization for XML have now become mor...
Dunren Che, Karl Aberer, M. Tamer Özsu
SIGMOD
2006
ACM
238views Database» more  SIGMOD 2006»
14 years 7 months ago
Continuous monitoring of top-k queries over sliding windows
Given a dataset P and a preference function f, a top-k query retrieves the k tuples in P with the highest scores according to f. Even though the problem is well-studied in convent...
Kyriakos Mouratidis, Spiridon Bakiras, Dimitris Pa...
EDBT
2006
ACM
266views Database» more  EDBT 2006»
14 years 7 months ago
From Analysis to Interactive Exploration: Building Visual Hierarchies from OLAP Cubes
We present a novel framework for comprehensive exploration of OLAP data by means of user-defined dynamic hierarchical visualizations. The multidimensional data model behind the OLA...
Svetlana Vinnik, Florian Mansmann