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DOLAP
1999
ACM
15 years 10 months ago
A Cache Filtering Optimisation for Queries to Massive Datasets on Tertiary Storage
We consider a system in which many users run queries to examine subsets of a large object set. The object set is partitioned into files on tape. A single subset of objects will b...
Koen Holtman, Peter van der Stok, Ian Willers
SIGMOD
2009
ACM
133views Database» more  SIGMOD 2009»
16 years 6 months ago
Hierarchical result views for keyword queries over relational databases
Enabling keyword queries over relational databases (KQDB) benefits a large population of users who have difficulty in understanding the database schema or using SQLs. However, sin...
Shiyuan Wang, Jun'ichi Tatemura, Arsany Sawires, O...
CIKM
2009
Springer
15 years 10 months ago
Empirical justification of the gain and discount function for nDCG
The nDCG measure has proven to be a popular measure of retrieval effectiveness utilizing graded relevance judgments. However, a number of different instantiations of nDCG exist, d...
Evangelos Kanoulas, Javed A. Aslam
CHI
2005
ACM
16 years 6 months ago
Vista: interactive coffee-corner display
In the contemporary information-saturated world, there is a need for an easier, faster, and more social way to keep office workers updated and better aware of surrounding activiti...
Marcin Wichary, Lucy T. Gunawan, Nele Van den Ende...
ITICSE
2004
ACM
15 years 12 months ago
Generation as method for explorative learning in computer science education
The use of generic and generative methods for the development and application of interactive educational software is a relatively unexplored area in industry and education. Advant...
Andreas Kerren