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» Generating Databases for Query Workloads
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SPIESR
1997
109views Database» more  SPIESR 1997»
15 years 20 days ago
FFT-Based Technique for Image-Signature Generation
In this paper we address image retrieval by similarity in multimedia databases. We discuss the generation and use of signatures computed from image content. The proposed technique...
Augusto Celentano, Vincenzo Di Lecce
SIGMOD
2008
ACM
142views Database» more  SIGMOD 2008»
15 years 11 months ago
Cost-based variable-length-gram selection for string collections to support approximate queries efficiently
Approximate queries on a collection of strings are important in many applications such as record linkage, spell checking, and Web search, where inconsistencies and errors exist in...
Xiaochun Yang, Bin Wang, Chen Li
VLDB
2005
ACM
139views Database» more  VLDB 2005»
15 years 4 months ago
Statistical Learning Techniques for Costing XML Queries
Developing cost models for query optimization is significantly harder for XML queries than for traditional relational queries. The reason is that XML query operators are much mor...
Ning Zhang 0002, Peter J. Haas, Vanja Josifovski, ...
VLDB
2007
ACM
99views Database» more  VLDB 2007»
15 years 11 months ago
Zoom*UserViews: Querying Relevant Provenance in Workflow Systems
In this demonstration, we present the ZOOM*UserView system, and focus on the module which generates a "user view" based on what tasks the user perceives to be relevant i...
Olivier Biton, Sarah Cohen Boulakia, Susan B. Davi...
SIGMOD
2007
ACM
112views Database» more  SIGMOD 2007»
15 years 11 months ago
A random walk approach to sampling hidden databases
A large part of the data on the World Wide Web is hidden behind form-like interfaces. These interfaces interact with a hidden backend database to provide answers to user queries. ...
Arjun Dasgupta, Gautam Das, Heikki Mannila