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CORIA
2008
15 years 8 months ago
Involving Validity Indices in Document Clustering
The goal of any clustering algorithm is to find the optimal clustering solution with the optimal number of clusters. In order to evaluate a clustering solution, a number of validit...
Ahmad El Sayed, Hakim Hacid, Djamel A. Zighed
ICDT
2009
ACM
121views Database» more  ICDT 2009»
16 years 7 months ago
Optimal splitters for database partitioning with size bounds
Partitioning is an important step in several database algorithms, including sorting, aggregation, and joins. Partitioning is also fundamental for dividing work into equal-sized (o...
Kenneth A. Ross, John Cieslewicz
ISQED
2006
IEEE
118views Hardware» more  ISQED 2006»
16 years 24 days ago
Localized On-Chip Power Delivery Network Optimization via Sequence of Linear Programming
— In this paper, we propose an efficient algorithm to reduce the voltage noises for on-chip power/ground (P/G) networks of VLSI. The new method is based on the sequence of linea...
Jeffrey Fan, I-Fan Liao, Sheldon X.-D. Tan, Yici C...
108
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ICASSP
2010
IEEE
15 years 7 months ago
Rate-distortion optimized transform for intra-frame coding
In this paper, a novel algorithm is proposed for intra-frame coding, named as rate-distortion optimized transform (RDOT). Unlike existing intra-frame coding schemes where the tran...
Xin Zhao, Li Zhang, Siwei Ma, Wen Gao
WIOPT
2010
IEEE
15 years 4 months ago
Optimizing power allocation in interference channels using D.C. programming
Abstract--Power allocation is a promising approach for optimizing the performance of mobile radio systems in interference channels. In the present paper, the non-convex objective f...
Hussein Al-Shatri, Tobias Weber