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VLDB
2005
ACM
86views Database» more  VLDB 2005»
16 years 5 days ago
One-Pass Wavelet Synopses for Maximum-Error Metrics
We study the problem of computing waveletbased synopses for massive data sets in static and streaming environments. A compact representation of a data set is obtained after a thre...
Panagiotis Karras, Nikos Mamoulis
VLDB
2005
ACM
125views Database» more  VLDB 2005»
16 years 5 days ago
Using Association Rules for Fraud Detection in Web Advertising Networks
Discovering associations between elements occurring in a stream is applicable in numerous applications, including predictive caching and fraud detection. These applications requir...
Ahmed Metwally, Divyakant Agrawal, Amr El Abbadi
VLDB
2005
ACM
96views Database» more  VLDB 2005»
16 years 5 days ago
Robust Real-time Query Processing with QStream
Processing data streams with Quality-ofService (QoS) guarantees is an emerging area in existing streaming applications. Although it is possible to negotiate the result quality and...
Sven Schmidt, Thomas Legler, Sebastian Schär,...
ADBIS
2004
Springer
111views Database» more  ADBIS 2004»
16 years 3 days ago
A High-Level Language for Specifying XML Data Transformations
Abstract. We propose a descriptive high-level language XDTrans devoted to specify transformations over XML data. The language is based on unranked tree automata approach. In contra...
Tadeusz Pankowski
ADC
2004
Springer
116views Database» more  ADC 2004»
16 years 3 days ago
Index Compression Using Fixed Binary Codewords
Document retrieval and web search engines index large quantities of text. The static costs associated with storing the index can be traded against dynamic costs associated with us...
Vo Ngoc Anh, Alistair Moffat