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When the Optimum is also Blind: a New Perspective on Universal Optimization [article]

Marek Adamczyk, Fabrizio Grandoni, Stefano Leonardi, MIchal Wlodarczyk
2017 arXiv   pre-print
Our result is based on rounding a proper configuration IP that captures the optimal universal solution, and using tools from submodular optimization.  ...  Here one typically compares the quality of the produced solution with the optimal offline solution.  ...  It holds that OP T CONF-LP-FL is a lower-bound on the expected cost of an optimal universal solution.  ... 
arXiv:1707.01702v1 fatcat:3qfca2c4rjeylk2a5udljnmzze

Prevention of diabetic blindness

E Stefansson
2006 British Journal of Ophthalmology  
Diabetic eye disease remains a major cause of blindness in the world, also in some of the richest societies. 4 5 10 The public health failure is not universal.  ...  The pressing need is for a public health approach using present technology rather than the development of new technologies The standard of treatment and prevention is universally accepted.  ... 
doi:10.1136/bjo.2005.082065 pmid:16361653 pmcid:PMC1856883 fatcat:zdanwidnqbcb3geb56nln6g7ga

Blind GB-PANDAS: A Blind Throughput-Optimal Load Balancing Algorithm for Affinity Scheduling

Ali Yekkehkhany, Rakesh Nagi
2020 IEEE/ACM Transactions on Networking  
Dynamic affinity load balancing of multi-type tasks on multi-skilled servers, when the service rate of each task type on each of the servers is known and can possibly be different from each other, is an  ...  The goal is to do task assignment on servers in a real time manner so that the system becomes stable, which means that the queue lengths do not diverge to infinity in steady state (throughput optimality  ...  Blind GB-PANDAS can also use a one queue per server queueing structure, where the workload on servers is of interest instead of the queue lengths, but for an easier explanation of the Blind GB-PANDAS algorithm  ... 
doi:10.1109/tnet.2020.2978195 fatcat:fytrqbcsi5dffn2obabdxjxy4y

From Blind Signal Extraction to Blind Instantaneous Signal Separation: Criteria, Algorithms, and Stability

S.A. Cruces-Alvarez, A. Cichocki, S. Amari
2004 IEEE Transactions on Neural Networks  
In addition, we analyze a family of learning algorithms based on Stiefel manifolds and the natural gradient ascent, present the nonlinear optimal activations (score) functions, and provide new or extended  ...  He is currently an Associate Professor at the University of Seville, Spain, where he has been a member of Signal Theory and Communications Group since 1995.  ...  The new estimate is then optimized by maximizing the index (11) with respect to the functional , while keeping the initial constraints.  ... 
doi:10.1109/tnn.2004.828764 pmid:15461079 fatcat:3gkrmacfevbnhha7w3q6v3eyxq

Adaptive Blind Channel Equalization [chapter]

Shafayat Abrar, Azzedine Zerguine, Asoke Kumar
2012 Digital Communication  
The authors acknowledge the support of COMSATS Institute of Information Technology, Islamabad, Pakistan, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia, and the University of Liverpool  ...  , UK towards the accomplishment of this work.  ...  Hence, a Bussgang blind equalizer tries to solve the following optimization problem: w † = arg optimize w J,w i t hJ = E[J (y n )] (4) The cost J is an expression for implicitly embedded higher-order statistics  ... 
doi:10.5772/35399 fatcat:gkyb7wbjuzdjdndkmvdvetyv3y

A blind spectral unmixing in wavelet domain

Vijayashekhar Ss, Jignesh Shashikant Bhatt
2021 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
Alternating nonnegative least-squares is employed to optimize the regularized and constrained nonnegative matrix factorization functional in the wavelet domain.  ...  Spectrally dense and overlapped hyperspectral data is represented using biorthogonal wavelet bases that yield a compact linear mixing model in the wavelet domain.  ...  ACKNOWLEDGMENT The authors would like to thank the Editor, the Associate editor, and four anonymous reviewers for their insightful comments.  ... 
doi:10.1109/jstars.2021.3116698 fatcat:hzp5rgv7l5hs7btztvurst5ggi

A View of Things to Come: Community Services for the Blind, 1980

Alexander F. Handel
1960 Journal of Visual Impairment & Blindness  
The study here reviewed is Services to Blind Children in the State of New York, by William M. Cruick- shank, Ph.D., and Matthew J. Trippe, Ph.D., Syracuse University Press, 1959, 495 pp. $5.  ...  When I read recently of the successful flight of a new plane intended to travel at four thousand miles per hour,-’ I couldn’t help but won- 1 Facts on the Major Killing and Crippling Diseases in the United  ... 
doi:10.1177/0145482x6005400101 fatcat:b5t5wrychzgcbacrwzgom3d6ce

A Blind Particle Filtering Detector of Signals Transmitted Over Flat Fading Channels

Y. Huang, P.M. Djuric
2004 IEEE Transactions on Signal Processing  
A new particle filtering detector (PFD) is proposed for blind signal detection over flat Rayleigh fading channels whose model coefficients are unknown.  ...  The detector employs a hybrid importance function and a mixture Kalman filter. It also incorporates an auxiliary particle filtering strategy with a smoothing kernel in the resampling step.  ...  In particular, the weighted samples, or particles, approximate . When a new observation arrives, sampling from is carried out in a sequential manner based on , as in Chart 1. Chart 1.  ... 
doi:10.1109/tsp.2004.828902 fatcat:rnwsqpday5gpfb3jkrjvxblsca

Strategic issues in preventing cataract blindness in developing countries

L B Ellwein, C Kupfer
1995 Bulletin of the World Health Organization  
The expansion of IOL surgery for unilateral blindness is a favourable trend in ensuring financial sustainability of delivery systems; patients can be operated on while still economically productive and  ...  Cataract blindness is a public health problem of major proportions in developing countries.  ...  This paper represents the sum total of these interactions. The assistance of Diane Barber in the preparation of this manuscript is also acknowledged.  ... 
pmid:8846495 pmcid:PMC2486813 fatcat:qv5s7gkjd5curf6xi5dfhhpuye

Blind equalization using the constant modulus criterion: a review

R. Johnson, P. Schniter, T.J. Endres, J.D. Behm, D.R. Brown, R.A. Casas
1998 Proceedings of the IEEE  
This paper provides a tutorial introduction to the constant modulus (CM) criterion for blind fractionally spaced equalizer (FSE) design via a (stochastic) gradient descent algorithm such as the constant  ...  The topical divisions utilized in this tutorial can be used to help catalog the emerging literature on the CM criterion and on the behavior of (stochastic) gradient descent algorithms used to minimize  ...  ACKNOWLEDGMENT The authors would like to thank the following people for their comments on earlier versions of this paper: C.  ... 
doi:10.1109/5.720246 fatcat:lwf27wfvbjgmph7c32dewno44i

Spectral Variability Aware Blind Hyperspectral Image Unmixing Based on Convex Geometry [article]

Lucas Drumetz, Jocelyn Chanussot, Christian Jutten, Wing-Kin Ma, Akira Iwasaki
2019 arXiv   pre-print
Hyperspectral image unmixing has proven to be a useful technique to interpret hyperspectral data, and is a prolific research topic in the community.  ...  Many algorithms based on convex geometry are still used when considering these two limitations of the linear model.  ...  The perspective projection of a polyhedral cone on any compatible hyperplane u x = 1 is a simplex spanned by the perspective projection of the P generators of the convex cone.  ... 
arXiv:1904.03888v1 fatcat:5z37qadx5rbnxfnoxfriwbieqm

Early Intervention for Infants with Deaf-Blindness

Martha G. Michael, Peter V. Paul
1990 Exceptional children  
We argue also that these perspectives should be emphasized in preservice training programs in university settings.  ...  Methods for adapting environments, optimum positioning of child, and enhancing optimal vision use should be part of the programming (Courtwright, Mihok, & Jose, 1975; Jose, 1983).  ... 
doi:10.1177/001440299105700303 pmid:2286211 fatcat:5b4jfkcv2rghxnqlkkezoaia2a

Multi-Resolution Beta-Divergence NMF for Blind Spectral Unmixing [article]

Valentin Leplat, Nicolas Gillis, Cédric Févotte
2021 arXiv   pre-print
We show on numerical experiments that the MU are able to obtain high resolutions in both dimensions on two applications: (1) blind unmixing of audio spectrograms: to the best of our knowledge, this is  ...  To perform blind source separation using observations with different resolutions, a standard approach is to use coupled nonnegative matrix factorizations (NMF).  ...  Then, we also perform a new numerical experiment where we add multiplicative Gamma noise.  ... 
arXiv:2007.03893v3 fatcat:whbh53miajfa3l6hxk7mk3theq

No Blind Spots: Full-Surround Multi-Object Tracking for Autonomous Vehicles using Cameras & LiDARs [article]

Akshay Rangesh, Mohan M. Trivedi
2019 arXiv   pre-print
We also leverage the modularity of our approach by comparing the effects of including/excluding different sensors, changing the total number of sensors, and the quality of object proposals on the final  ...  This is a departure from traditional techniques where objects are simply tracked in the image plane.  ...  We would also like to thank our colleagues Kevan Yuen, Nachiket Deo, Ishan Gupta and Borhan Vasli at the Laboratory for Intelligent and Safe Automobiles (LISA), UC San Diego for their useful inputs and  ... 
arXiv:1802.08755v4 fatcat:mpiwothglzaljhtct6fburgcwu

On the Optimality of the Null Subcarrier Placement for Blind Carrier Offset Estimation in OFDM Systems

Yan Wu, S. Attallah, J.W.M. Bergmans
2009 IEEE Transactions on Vehicular Technology  
Boutros, "A universal lattice code decoder for fading channels," IEEE Trans.  ...  2109 to the classic two-stage scheme, provided that the SNR is sufficiently high.  ...  ACKNOWLEDGMENT The authors would like to thank Prof. T. J. Lim from the University of Toronto for the insightful discussion that they had with him and for his valuable suggestions.  ... 
doi:10.1109/tvt.2008.2005574 fatcat:wdtidfnzangrlak4fyb7ace74u
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