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ICDE
2007
IEEE
117views Database» more  ICDE 2007»
16 years 7 months ago
Unnesting Scalar SQL Queries in the Presence of Disjunction
Optimizing nested queries is an intricate problem. It becomes even harder if in a nested query the linking predicate or the correlation predicate occurs disjunctively. We present ...
Matthias Brantner, Norman May, Guido Moerkotte
ML
2007
ACM
130views Machine Learning» more  ML 2007»
15 years 6 months ago
Interactive learning of node selecting tree transducer
We develop new algorithms for learning monadic node selection queries in unranked trees from annotated examples, and apply them to visually interactive Web information extraction. ...
Julien Carme, Rémi Gilleron, Aurélie...
224
Voted
ADBIS
2009
Springer
210views Database» more  ADBIS 2009»
15 years 11 months ago
Performance Driven Database Design for Scalable Web Applications
Scaling up web applications requires distribution of load across multiple application servers and across multiple database servers. Distributing load across multiple application se...
Jozsef Patvarczki, Murali Mani, Neil T. Heffernan
TREC
2003
15 years 7 months ago
Fondazione Ugo Bordoni at TREC 2003: Robust and Web Track
Our participation in TREC 2003 aims to adapt the use of the DFR (Divergence From Randomness) models with Query Expansion (QE) to the robust track and the topic distillation task o...
Giambattista Amati, Claudio Carpineto, Giovanni Ro...
180
Voted
VLDB
1999
ACM
89views Database» more  VLDB 1999»
15 years 10 months ago
Physical Data Independence, Constraints, and Optimization with Universal Plans
We present an optimization method and algorithm designed for three objectives: physical data independence, semantic optimization, and generalized tableau minimization. The method ...
Alin Deutsch, Lucian Popa, Val Tannen