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4,446
A constant approximation algorithm for link scheduling in arbitrary networks under physical interference model
 Proc. ACM FOWANC
, 2009
"... Link scheduling is crucial in improving the throughput in wireless networks and it has been widely studied under various interference models. In this paper, we study the link scheduling problem under physical interference model where all senders of the links transmit at a given power P and a link ca ..."
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Cited by 13 (4 self)
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with approximation ratio O(min(log maxl∈L w(l) minl∈L w(l) , log maxl∈L ‖l‖)), where‖l‖ minl∈L ‖l‖ is the Euclidean length of a link l.
WikiLeaks Afghanistan War Logs ”
, 2013
"... Model validation supplement to “Model trees with topic model preprocessing: An approach ..."
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Model validation supplement to “Model trees with topic model preprocessing: An approach
LogDomain Circuits for Auditory Signal Processing
, 1999
"... The theory and practice of logdomain filter design has reached the point where it is possible to incorporate logdomain filter structures into large currentmode VLSI systems. We report on interface circuits used to implement a currentmode frontend filterbank and feature extractor for acoustic p ..."
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The theory and practice of logdomain filter design has reached the point where it is possible to incorporate logdomain filter structures into large currentmode VLSI systems. We report on interface circuits used to implement a currentmode frontend filterbank and feature extractor for acoustic
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"... Let f (z) _ Ik o ak zk be an entire function. Denote M(r) = maxl,l=, If (z)I; then the order p is defined thus: lim sup ra ..."
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Let f (z) _ Ik o ak zk be an entire function. Denote M(r) = maxl,l=, If (z)I; then the order p is defined thus: lim sup ra
Logmajorization of the moduli of the eigenvalues of a matrix polynomial by tropical roots
"... Abstract. We show that the sequence of moduli of the eigenvalues of a matrix polynomial is logmajorized, up to universal constants, by a sequence of “tropical roots ” depending only on the norms of the matrix coefficients. These tropical roots are the nondifferentiability points of an auxiliary tr ..."
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Cited by 4 (3 self)
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Abstract. We show that the sequence of moduli of the eigenvalues of a matrix polynomial is logmajorized, up to universal constants, by a sequence of “tropical roots ” depending only on the norms of the matrix coefficients. These tropical roots are the nondifferentiability points of an auxiliary
Effect of Mismatched SNR on the Performance of LogMAP Turbo Detector
"... Abstract—The effect of signaltonoise ratio (SNR) mismatch on the bit error rate (BER) performance of LogMAP turbo detector is studied. It is shown that the sensitivity to the mismatched SNR depends on the channel loss and the encoder memory length. In particular, the sensitivity is more important ..."
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Cited by 2 (2 self)
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Abstract—The effect of signaltonoise ratio (SNR) mismatch on the bit error rate (BER) performance of LogMAP turbo detector is studied. It is shown that the sensitivity to the mismatched SNR depends on the channel loss and the encoder memory length. In particular, the sensitivity is more
On approximating the density function of reliabilities of the maxlogMAP decoder
 in Fourth IASTED International MultiConference on Wireless and Optical Communications (CSA 2004
, 2004
"... Reliabilities at the output of softdecision decoders are random variables and hence are characterized by their density function. Density functions of reliabilities have been computed based on probabilities involving the projection of the noise in directions corresponding to different error events. ..."
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Cited by 3 (1 self)
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Reliabilities at the output of softdecision decoders are random variables and hence are characterized by their density function. Density functions of reliabilities have been computed based on probabilities involving the projection of the noise in directions corresponding to different error events. Each such projection results in a random variable, and two approaches have been taken to compute probabilities involving these random variables. In the first approach, the random variables are treated as if they are independent; in the second approach, correlations between the random variables are taken into account. The mathematical expressions found using either approach are generally too complicated for further use in analytical work. In this paper, we propose a simple approach to account for the correlation between the random variables resulting from the projection of noise onto directions specified by different error events. Under this approach, we reduce the number of random variables that are considered in the computation of the PDF by eliminating those that are highly correlated. Working with this condensed set of random variables produces results that are close to the true values even if the independence assumption is used. A mathematically tractable closedform approximation for the PDF is also presented, and the validity of this approximation is demonstrated. This PDF estimate can be used to analyze several communication schemes that utilize reliabilities as a design tool.
1An Inequality for Nearly Logconcave Distributions with Applications to Learning
"... Abstract — We prove that given a nearly logconcave distribution, in any partition of the space to two well separated sets, the measure of the points that do not belong to these sets is large. We apply this isoperimetric inequality to derive lower bounds on the generalization error in learning. We ..."
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Abstract — We prove that given a nearly logconcave distribution, in any partition of the space to two well separated sets, the measure of the points that do not belong to these sets is large. We apply this isoperimetric inequality to derive lower bounds on the generalization error in learning. We
MaximumLikelihood Estimation of a LogConcave Density based on Censored Data∗
, 2014
"... We consider nonparametric maximumlikelihood estimation of a logconcave density in case of intervalcensored, rightcensored and binned data. We allow for the possibility of a subprobability density with an additional mass at +∞, which is estimated simultaneously. The existence of the estimator is ..."
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We consider nonparametric maximumlikelihood estimation of a logconcave density in case of intervalcensored, rightcensored and binned data. We allow for the possibility of a subprobability density with an additional mass at +∞, which is estimated simultaneously. The existence of the estimator
.Abstract LogP: Towards a Realistic Model of Parallel Computation
"... A vast body of theoretical research hea focused either on overly SimpKStiC models of parallel computation, notably the PRAM or overly specific models that have few representatives in the real world. Both kinds of models encourage exploitation of formal loopholes, rather than rewarding development of ..."
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of techrdques that yield performance across a range of current and future parallel machines. This paper offers a new parallel machine model, called lLogP, that reflects the critical technology trends underlying parallel computers. It is intended to serve as a basis for developing fas~ portable parallel
Results 1  10
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4,446