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dspace.mit.edu 檢索結果共 84617 筆,本頁資料從第 85 筆到第 96 筆

In this paper, we present a novel method for inverse filtering a two dimensional (2-D) signal using phase-based processing techniques. A 2-D sequence can be represented by a sufficient number of samples of the phase of its Fourier transform and its region of support. This is exploited to perform deconvolution. We examine the effects of additive noise and incomplete know....

By Jae S. Lim,Megan Marie Fuller--SPIE--2016-01-13
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Selection among alternative theoretical models given an observed dataset is an important challenge in many areas of physics and astronomy. Reversible-jump Markov chain Monte Carlo (RJMCMC) is an extremely powerful technique for performing Bayesian model selection, but it suffers from a fundamental difficulty and it requires jumps between model parameter spaces, but cann....

By W. M. Farr,D. Stevens,Ilya Mandel--Royal Society--2016-01-13
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We initiate the study of quantum locally testable codes (qLTCs). Classical LTCs are very important in computational complexity. These codes are defined as the linear subspace satisfying a set of local constraints, with the additional requirement that their soundness, R(δ), which is the probability that a randomly chosen constraint is violated, is proportional to the pr....

By Dorit Aharonov,Lior Eldar--Society for Industrial and Applied Mathematics--2016-01-13
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The introduction of a non-black-box simulation technique by Barak (FOCS 2001) has been a major landmark in cryptography, breaking the previous barriers of black-box impossibility. Barak's technique has given rise to various powerful applications and is a key component in all known protocols with non-black-box simulation. We present the first non-black-box simulation tec....

By Nir Bitansky,Omer Paneth--Society for Industrial and Applied Mathematics--2016-01-13
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Most image instance retrieval pipelines are based on comparison of vectors known as global image descriptors between a query image and the database images. Due to their success in large scale image classification, representations extracted from Convolutional Neural Networks (CNN) are quickly gaining ground on Fisher Vectors (FVs) as state-of-the-art global descriptors f....

By Olivier Morère,Antoine Veillard,Jie Lin,Julie Petta,Vijay Chandrasekhar,Tomaso Poggio--Center for Brains, Minds and Machines (CBMM)--2016-01-12
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Gradient backpropagation (BP) requires symmetric feedforward and feedback connections—the same weights must be used for forward and backward passes. This “weight transport problem” [1] is thought to be one of the main reasons of BP’s biological implausibility. Using 15 different classification datasets, we systematically study to what extent BP really depends on....

By Qianli Liao,Joel Z. Leibo,Tomaso Poggio--Center for Brains, Minds and Machines (CBMM), arXiv--2016-01-12
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Faces are a behaviorally important class of visual stimuli for primates. Recent work in macaque monkeys has identified six discrete face areas where most neurons have higher firing rates to images of faces compared with other objects (Tsao et al., 2006). While neurons in these areas appear to have different tuning (Freiwald and Tsao, 2010; Issa and DiCarlo, 2012), exact....

By Ethan M. Meyers,Mia Borzello,Winrich A. Freiwald,Doris Tsao--Society for Neuroscience--2016-01-12
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Inter-organizational collaboration as a means for policy coordination has come to be seen as a solution to difficult and complex urban challenges. In Portugal, where metropolitan governance structures are highly fragmented, critics highlight the need for better coordination between municipalities—a situation typical in many countries. We seek to understand the forces ....

By Lisa Rayle,P. Christopher Zegras--Taylor & Francis--2016-01-12
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The reference human genome sequence set the stage for studies of genetic variation and its association with human disease, but epigenomic studies lack a similar reference. To address this need, the NIH Roadmap Epigenomics Consortium generated the largest collection so far of human epigenomes for primary cells and tissues. Here we describe the integrative analysis of 111....

By Anshul Kundaje,Wouter Meuleman,Jason Ernst,Angela Yen,Pouya Kheradpour,Zhizhuo Zhang,Jianrong Wang--Nature Publishing Group--2016-01-12
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Songbirds represent an important model organism for elucidating molecular mechanisms that link genes with complex behaviors, in part because they have discrete vocal learning circuits that have parallels with those that mediate human speech. We found that ~10% of the genes in the avian genome were regulated by singing, and we found a striking regional diversity of both ....

By Osceola Whitney,Andreas R. Pfenning,Jason T. Howard,Charles A. Blatti,Fang Liu,James Ward--American Association for the Advancement of Science (AAAS)--2016-01-12
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In this paper, we analyze the effectiveness of the 2010 Tarmac Delay Rule from a passenger - centric point of view. The Tarmac Delay Rule stipulates that aircraft lift-off, or an opportunity for passengers to deplane, must occur no later than three hours after the cabin door closure at the gate of the departure airport; and that an opportunity for passengers to deplane ....

By Chiwei Yan,Vikrant Vaze,Allison Vanderboll,Cynthia Barnhart----2016-01-12
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There is a growing demand for data-driven web applications that help automate organizational and business processes of low to medium complexity by letting users view and update structured data in controlled ways. We present Object Spreadsheets, an end-user development tool that combines a spreadsheet interface with a rich data model to help the process administrators bu....

By Richard Matthew McCutchen,Shachar Itzhaky,Daniel Jackson----2016-01-12
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