2468 search results - page 105 / 494 » Aggregation operators 2003 |
UM
2007
Springer
14 years 3 months ago
2007
Springer
One of the main problems of collaborative filtering recommenders is the sparsity of the ratings in the users-items matrix, and its negative effect on the prediction accuracy. This ...
EUC
2005
Springer
14 years 2 months ago
2005
Springer
This paper presents a distributed middleware architecture based on a service-oriented approach, to manage high volume sensor events. Event management takes a multi-step operation f...
PKDD
2004
Springer
14 years 2 months ago
2004
Springer
One of the most important operations involving Data Mining patterns is computing their similarity. In this paper we present a general framework for comparing both simple and comple...
DBPL
1999
Springer
14 years 1 months ago
1999
Springer
We consider IES(SQL), the incremental evaluation system over an SQL-like language with grouping, arithmetics, and aggregation. We show that every second order query is in IES(SQL) ...
EPEW
2007
Springer
14 years 24 days ago
2007
Springer
A parallel composition is defined for Markov reward chains with fast transitions and for discontinuous Markov reward chains. In this setting, compositionality with respect to the r...