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ICWN
2009
15 years 4 months ago
On the Power Allocation of MIMO Channels
In this paper we consider MIMO system with Mt transmitting and Mr receiving antennas, when channel state information (CSI) is known on the transmitter side. The Reyleigh fading cha...
Viktor Zaharov, Houssain Kettani
IGARSS
2009
15 years 4 months ago
Comparison of Precipitation Effects in Space-borne X- and Ka-band SAR Imaging
As the operating frequencies of SAR-systems are increasing, the visible distortions due to precipitation in SAR-images are becoming more frequent. This holds especially for the ca...
Andreas Danklmayer, Madhu Chandra
ACL
2011
14 years 10 months ago
Neutralizing Linguistically Problematic Annotations in Unsupervised Dependency Parsing Evaluation
Dependency parsing is a central NLP task. In this paper we show that the common evaluation for unsupervised dependency parsing is highly sensitive to problematic annotations. We s...
Roy Schwartz, Omri Abend, Roi Reichart, Ari Rappop...
FSE
2011
Springer
268views Cryptology» more  FSE 2011»
14 years 10 months ago
Cryptanalysis of PRESENT-Like Ciphers with Secret S-Boxes
At Eurocrypt 2001, Biryukov and Shamir investigated the security of AES-like ciphers where the substitutions and affine transformations are all key-dependent and successfully crypt...
Julia Borghoff, Lars R. Knudsen, Gregor Leander, S...
STOC
2009
ACM
102views Algorithms» more  STOC 2009»
16 years 7 months ago
Multiple intents re-ranking
One of the most fundamental problems in web search is how to re-rank result web pages based on user logs. Most traditional models for re-ranking assume each query has a single int...
Yossi Azar, Iftah Gamzu, Xiaoxin Yin