Sciweavers

950 search results - page 73 / 190
» Evaluation over thousands of queries
Sort
View
EDBT
2010
ACM
164views Database» more  EDBT 2010»
14 years 1 months ago
Techniques for efficiently querying scientific workflow provenance graphs
A key advantage of scientific workflow systems over traditional scripting approaches is their ability to automatically record data and process dependencies introduced during workf...
Manish Kumar Anand, Shawn Bowers, Bertram Ludä...
ICDE
2012
IEEE
304views Database» more  ICDE 2012»
12 years 19 days ago
Learning-based Query Performance Modeling and Prediction
— Accurate query performance prediction (QPP) is central to effective resource management, query optimization and query scheduling. Analytical cost models, used in current genera...
Mert Akdere, Ugur Çetintemel, Matteo Rionda...
CIKM
2005
Springer
14 years 3 months ago
Selectivity-based partitioning: a divide-and-union paradigm for effective query optimization
Modern query optimizers select an efficient join ordering for a physical execution plan based essentially on the average join selectivity factors among the referenced tables. In ...
Neoklis Polyzotis

Publication
394views
15 years 10 months ago
SEA-CNN: Scalable Processing of Continuous K-Nearest Neighbor Queries in Spatio-temporal Databases
Location-aware environments are characterized by a large number of objects and a large number of continuous queries. Both the objects and continuous queries may change their locati...
Xiaopeng Xiong, Mohamed F. Mokbel, Walid G. Aref
SIGMOD
2009
ACM
148views Database» more  SIGMOD 2009»
14 years 10 months ago
Combining keyword search and forms for ad hoc querying of databases
A common criticism of database systems is that they are hard to query for users uncomfortable with a formal query language. To address this problem, form-based interfaces and keyw...
Eric Chu, Akanksha Baid, Xiaoyong Chai, AnHai Doan...