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ER
2004
Springer
92views Database» more  ER 2004»
14 years 1 months ago
XBiT: An XML-Based Bitemporal Data Model
Abstract. Past research work on modeling and managing temporal information has, so far, failed to elicit support in commercial database systems. The increasing popularity of XML oï...
Fusheng Wang, Carlo Zaniolo
SIGMOD
2003
ACM
115views Database» more  SIGMOD 2003»
14 years 7 months ago
Temporal Coalescing with Now, Granularity, and Incomplete Information
This paper presents a novel strategy for temporal coalescing. Temporal coalescing merges the temporal extents of value-equivalent tuples. A temporal extent is usually coalesced of...
Curtis E. Dyreson
WWW
2006
ACM
14 years 8 months ago
Time-dependent semantic similarity measure of queries using historical click-through data
It has become a promising direction to measure similarity of Web search queries by mining the increasing amount of clickthrough data logged by Web search engines, which record the...
Qiankun Zhao, Steven C. H. Hoi, Tie-Yan Liu, Soura...
SODA
1997
ACM
144views Algorithms» more  SODA 1997»
13 years 9 months ago
Methods for Achieving Fast Query Times in Point Location Data Structures
Given a collection S of n line segments in the plane, the planar point location problem is to construct a data structure that can e ciently determine for a given query point p the...
Michael T. Goodrich, Mark W. Orletsky, Kumar Ramai...
SIGMOD
2009
ACM
138views Database» more  SIGMOD 2009»
14 years 7 months ago
PRIMA: archiving and querying historical data with evolving schemas
Schema evolution poses serious challenges in historical data management. Traditionally historical data have been archived either by (i) migrating them into the current schema vers...
Hyun J. Moon, Carlo Curino, MyungWon Ham, Carlo Za...