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135
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ICDE
2010
IEEE
206views Database» more  ICDE 2010»
15 years 5 months ago
HECATAEUS: Regulating Schema Evolution
HECATAEUS is an open-source software tool for enabling impact prediction, what-if analysis, and regulation of relational database schema evolution. We follow a graph theoretic appr...
George Papastefanatos, Panos Vassiliadis, Alkis Si...
146
Voted
EDBT
2009
ACM
208views Database» more  EDBT 2009»
15 years 10 months ago
Flexible and efficient querying and ranking on hyperlinked data sources
There has been an explosion of hyperlinked data in many domains, e.g., the biological Web. Expressive query languages and effective ranking techniques are required to convert this...
Ramakrishna Varadarajan, Vagelis Hristidis, Louiqa...
156
Voted
CORR
2011
Springer
207views Education» more  CORR 2011»
14 years 10 months ago
DB Category: Denotational Semantics for View-based Database Mappings
Abstract. We present a categorical denotational semantics for a database mapping, based on views, in the most general framework of a database integration/exchange. Developed databa...
Zoran Majkic
238
Voted
VLDB
2006
ACM
207views Database» more  VLDB 2006»
16 years 4 months ago
Modeling and querying moving objects in networks
: Moving Objects Databases have become an important research issue in recent years. For and querying moving objects, there exists a comprehensive framework of abstract data types t...
Ralf Hartmut Güting, Victor Teixeira de Almeida, ...
111
Voted
SIGIR
2002
ACM
15 years 3 months ago
Two-stage language models for information retrieval
The optimal settings of retrieval parameters often depend on both the document collection and the query, and are usually found through empirical tuning. In this paper, we propose ...
ChengXiang Zhai, John D. Lafferty