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JCSS
2000
92views more  JCSS 2000»
14 years 11 months ago
Querying Spatial Databases via Topological Invariants
The paper investigates the use of topological annotations (called topological invariants) to answer topological queries in spatial databases. The focus is on the translation of to...
Luc Segoufin, Victor Vianu
DIS
2000
Springer
15 years 3 months ago
Combination Retrieval for Creating Knowledge from Sparse Document Collection
With the variety of human life, people are interested in various matters for each one’s unique reason, for which a machine maybe a better counselor than a human. This paper prop...
Naohiro Matsumura, Yukio Ohsawa
TCC
2012
Springer
218views Cryptology» more  TCC 2012»
13 years 6 months ago
Iterative Constructions and Private Data Release
In this paper we study the problem of approximately releasing the cut function of a graph while preserving differential privacy, and give new algorithms (and new analyses of exis...
Anupam Gupta, Aaron Roth, Jonathan Ullman
ICDE
2007
IEEE
141views Database» more  ICDE 2007»
15 years 5 months ago
Self Managing Top-k (Summary, Keyword) Indexes in XML Retrieval
Retrieval queries that combine structural constraints with keyword search represent a significant challenge to XML data management systems. Queries are expected to be answered as...
Mariano P. Consens, Xin Gu, Yaron Kanza, Flavio Ri...
SCCC
1997
IEEE
15 years 3 months ago
Reactive Ranking for Cooperative Databases
A cooperative database allows the user to specify approximate or vague query conditions. A vague query requires the database system to rank the retrieved answers according to thei...
Berthier A. Ribeiro-Neto, Guilherme T. de Assis