Sciweavers

96 search results - page 2 / 20
» PTIME Queries Revisited
Sort
View
IANDC
2011
91views more  IANDC 2011»
13 years 7 days ago
Queries on Xml streams with bounded delay and concurrency
Query answering algorithms on Xml streams check answer candidates on the fly in order to avoid the unnecessary buffering whenever possible. The delay and concurrency of a query ...
Olivier Gauwin, Joachim Niehren, Sophie Tison
CORR
2010
Springer
153views Education» more  CORR 2010»
13 years 5 months ago
The Complexity of Causality and Responsibility for Query Answers and non-Answers
An answer to a query has a well-defined lineage expression (alternatively called how-provenance) that explains how the answer was derived. Recent work has also shown how to comput...
Alexandra Meliou, Wolfgang Gatterbauer, Katherine ...
CHI
2008
ACM
14 years 5 months ago
Large scale analysis of web revisitation patterns
Our work examines Web revisitation patterns. Everybody revisits Web pages, but their reasons for doing so can differ depending on the particular Web page, their topic of interest,...
Eytan Adar, Jaime Teevan, Susan T. Dumais
ICDT
2011
ACM
242views Database» more  ICDT 2011»
12 years 8 months ago
Knowledge compilation meets database theory: compiling queries to decision diagrams
The goal of Knowledge Compilation is to represent a Boolean expression in a format in which it can answer a range of online-queries in PTIME. The online-query of main interest to ...
Abhay Kumar Jha, Dan Suciu
ICDT
1995
ACM
96views Database» more  ICDT 1995»
13 years 8 months ago
On Two Forms of Structural Recursion
We investigate and compare two forms of recursion on sets for querying nested collections. The rst one is called sri and it corresponds to sequential processing of data. The second...
Dan Suciu, Limsoon Wong