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IIR
2010
15 years 5 months ago
GrOnto: A Granular Ontology for Diversifying Search Results
Results diversification is an approach used in literature to cover the possible interpretations of the results produced by query evaluation. For diversifying search results we pr...
Silvia Calegari, Gabriella Pasi
PVLDB
2010
120views more  PVLDB 2010»
15 years 5 months ago
Cloudy: A Modular Cloud Storage System
This demonstration presents Cloudy, a modular cloud storage system. Cloudy provides a highly flexible architecture for distributed data storage and is designed to operate with mu...
Donald Kossmann, Tim Kraska, Simon Loesing, Stepha...
DATESO
2009
146views Database» more  DATESO 2009»
15 years 4 months ago
Compression of the Stream Array Data Structure
In recent years, many approaches to XML twig pattern query (TPQ) processing have been developed. Some algorithms are supported by a stream abstract data type. s an abstract data ty...
Radim Baca, Martin Pawlas
SIGIR
2011
ACM
14 years 9 months ago
Ad hoc IR: not much room for improvement
Ranking function performance reached a plateau in 1994. The reason for this is investigated. First the performance of BM25 is measured as the proportion of queries satisfied on th...
Andrew Trotman, David Keeler
SIGMOD
2011
ACM
238views Database» more  SIGMOD 2011»
14 years 9 months ago
Data management over flash memory
Flash SSDs are quickly becoming mainstream and emerge as alternatives to magnetic disks. It is therefore imperative to incorporate them seamlessly into the enterprise. We present ...
Ioannis Koltsidas, Stratis Viglas