4589 search results - page 645 / 918 » A new evaluation measure for information retrieval systems |
250
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Publication
Non-negative matrix factorization (NMF) has become a standard tool in data mining, information retrieval, and signal processing. It is used to factorize a non-negative data matrix ...
169
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CHI
2007
ACM
16 years 7 months ago
2007
ACM
The rapid development of handheld devices is driving the development of new interaction styles. This paper examines one such technique: using hand motions to control a menu system...
182
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ICC
2007
IEEE
15 years 10 months ago
2007
IEEE
To increase the achievable sum rate of downlink MIMO (Multiple Input Multiple Output) systems, the cooperation among Base Stations (BS) is investigated in a slow fading channel. Th...
179
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ICWE
2004
Springer
16 years 4 days ago
2004
Springer
Abstract. This paper describes the new e-learning tool CHESt that allows students to search in a knowledge base for short (teaching) multimedia clips by using a semantic search eng...
188
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ACSW
2007
15 years 8 months ago
2007
The automatic conversion of free text into a medical ontology can allow computational access to important information currently locked within clinical notes and patient reports. T...