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» On the Complexity of Model Expansion
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ICASSP
2011
IEEE
12 years 11 months ago
Maximum marginal likelihood estimation for nonnegative dictionary learning
We describe an alternative to standard nonnegative matrix factorisation (NMF) for nonnegative dictionary learning. NMF with the Kullback-Leibler divergence can be seen as maximisa...
Onur Dikmen, Cédric Févotte
CIKM
2011
Springer
12 years 7 months ago
Improved answer ranking in social question-answering portals
Community QA portals provide an important resource for non-factoid question-answering. The inherent noisiness of user-generated data makes the identification of high-quality cont...
Felix Hieber, Stefan Riezler
ASPDAC
2005
ACM
118views Hardware» more  ASPDAC 2005»
13 years 9 months ago
Wideband modeling of RF/Analog circuits via hierarchical multi-point model order reduction
This paper proposes a novel wideband modeling technique for high-performance RF passives and linear(ized) analog circuits. The new method is based on a recently proposed sdomain h...
Zhenyu Qi, Sheldon X.-D. Tan, Hao Yu, Lei He
BSL
2004
110views more  BSL 2004»
13 years 7 months ago
Notes on quasiminimality and excellence
This paper ties together much of the model theory of the last 50 years. Shelah's attempts to generalize the Morley theorem beyond first order logic led to the notion of excel...
John T. Baldwin
VLDB
2004
ACM
104views Database» more  VLDB 2004»
14 years 7 months ago
Retrieval effectiveness of an ontology-based model for information selection
Technology in the field of digital media generates huge amounts of nontextual information, audio, video, and images, along with more familiar textual information. The potential for...
Latifur Khan, Dennis McLeod, Eduard H. Hovy