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161
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ICC
2007
IEEE
16 years 1 months ago
2007
IEEE
— This paper proposes a new QAM based codebook for beamforming in multiple-input multiple-output (MIMO) wireless systems with a limited-rate feedback channel. We show that such c...
131
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AI
2007
Springer
16 years 1 months ago
2007
Springer
Complex Nominals (CNs) have simple syntactic structure that conceals non-trivial semantic characteristics. While speakers of natural languages combine noun(s)/adjective(s) with a h...
170
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AIIA
2007
Springer
16 years 1 months ago
2007
Springer
Structured Hidden Markov Model (S-HMM) is a variant of Hierarchical Hidden Markov Model that shows interesting capabilities of extracting knowledge from symbolic sequences. In fact...
164
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COCO
2007
Springer
16 years 29 days ago
2007
Springer
We study the link between the complexity of a polynomial and that of its coefficient functions. Valiant’s theory is a good setting for this, and we start by generalizing one of V...
196
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CONCUR
2007
Springer
16 years 29 days ago
2007
Springer
Abstract. We consider linear time temporal logic enriched with semiextended regular expressions through various operators that have been proposed in the literature, in particular i...