Results 1 - 10 of 681

Single-snapshot file system analysis

by Avani Wildani, Ian F. Adams, Ethan L. Miller - in Proc. of MASCOTS 2013 , 2013
"... Abstract—Metadata snapshots are a common method for gaining insight into filesystems due to their small size and relative ease of acquisition. Since they are static, most researchers have used them for relatively simple analyses such as file size distributions and age of files. We hypothesize that i ..."
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into metadata snap-shots, and show a small proof of concept using data from Los Alamos National Laboratories. In our initial work, we see evidence that it is possible to identify user locality information, traditionally the purview of dynamic traces, using a single static snapshot. I.

Single snapshot signal subspace method for target location

by Edwin A. Marengo, Fred K. Gruber - Proc. International URSI/IEEE APS Annual Meeting , 2005
"... Abstract A signal subspace approach is developed for the passive sensing proW lem of locating radiation-emitting point sources from a single statistical realization or snapshot of the superposed radiation as detected at a receiving antenna array, and for the active sensing problem of locating point ..."
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Abstract A signal subspace approach is developed for the passive sensing proW lem of locating radiation-emitting point sources from a single statistical realization or snapshot of the superposed radiation as detected at a receiving antenna array, and for the active sensing problem of locating point

Advances in Radio Science Single snapshot DOA estimation

by B. Yang
"... Abstract. In array signal processing, direction of arrival (DOA) estimation has been studied for decades. Many algo-rithms have been proposed and their performance has been studied thoroughly. Yet, most of these works are focused on the asymptotic case of a large number of snapshots. In automotive r ..."
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radar applications like driver assistance systems, however, only a small number of snapshots of the radar sen-sor array or, in the worst case, a single snapshot is available for DOA estimation. In this paper, we investigate and compare different DOA estimators with respect to their single snapshot

A framework for modeling positive class expansion with single snapshot

by Yang Yu, Zhi-hua Zhou - In PAKDD 2008
"... Abstract. In many real-world data mining tasks, the coverage of the target con-cept may change as the time changes. For example,the coverage of “learned knowledge ” of a student today may be different from his/er “learned knowledge” tomorrow, since the “learned knowledge ” of the student is in expan ..."
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words, only a single snapshot of the data along the time axis is available. In this paper, we show that for positive class ex-pansion, i.e., the coverage of the target concept is in expanding as illustrated in the above “learned knowledge ” example, we can learn an accurate model from the single

High-Resolution Single-Snapshot DOA Estimation in MIMO Radar with Colocated Antennas

by Aboulnasr Hassanien, Moeness G. Amin, Yimin D. Zhang, Fauzia Ahmad
"... Abstract—In this paper, a high-resolution subspace-based method is proposed for single-snapshot direction-of-arrival (DOA) estimation in multiple-input multiple-output (MIMO) radar. First, a ‘principal ’ weight vector is designed for transmit beam-forming to achieve a desired transmit power distribu ..."
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Abstract—In this paper, a high-resolution subspace-based method is proposed for single-snapshot direction-of-arrival (DOA) estimation in multiple-input multiple-output (MIMO) radar. First, a ‘principal ’ weight vector is designed for transmit beam-forming to achieve a desired transmit power

Capon-Based Single-Snapshot DOA Estimation in Monostatic MIMO Radar

by Aboulnasr Hassanien, Moeness G. Amin, Yimin D. Zhang, Fauzia Ahmad
"... We consider the problem of single snapshot direction-of-arrival (DOA) estimation of multiple targets in monos-tatic multiple-input multiple-output (MIMO) radar. When only a single snapshot is used, the sample covariance matrix of the data becomes non-invertible and, therefore, does not permit applic ..."
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We consider the problem of single snapshot direction-of-arrival (DOA) estimation of multiple targets in monos-tatic multiple-input multiple-output (MIMO) radar. When only a single snapshot is used, the sample covariance matrix of the data becomes non-invertible and, therefore, does not permit

MUSIC for Single-Snapshot Spectral Estimation: Stability and Super-resolution

by Wenjing Liao, Albert Fannjiang , 2014
"... This paper studies the problem of line spectral estimation in the continuum of a bounded interval with one snapshot of array measurement. The single-snapshot measurement data is turned into a Hankel data matrix which admits the Vandermonde decomposition and is suitable for the MUSIC algorithm. The M ..."
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This paper studies the problem of line spectral estimation in the continuum of a bounded interval with one snapshot of array measurement. The single-snapshot measurement data is turned into a Hankel data matrix which admits the Vandermonde decomposition and is suitable for the MUSIC algorithm

Graphs over Time: Densification Laws, Shrinking Diameters and Possible Explanations

by Jure Leskovec, Jon Kleinberg, Christos Faloutsos , 2005
"... How do real graphs evolve over time? What are “normal” growth patterns in social, technological, and information networks? Many studies have discovered patterns in static graphs, identifying properties in a single snapshot of a large network, or in a very small number of snapshots; these include hea ..."
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How do real graphs evolve over time? What are “normal” growth patterns in social, technological, and information networks? Many studies have discovered patterns in static graphs, identifying properties in a single snapshot of a large network, or in a very small number of snapshots; these include

A SINGLE SNAPSHOT OPTIMAL FILTERING METHOD FOR FUNDAMENTAL FREQUENCY ESTIMATION

by Aalborg Universitet, Jesper Rindom Christensen, Mads Græsbøll Jensen, Søren Holdt, Jesper Rindom Jensen, Mads Græsbøll Christensen, Søren Holdt Jensen
"... Document Version Peer reviewed version Link to publication from Aalborg University Citation for published version (APA): ..."
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Document Version Peer reviewed version Link to publication from Aalborg University Citation for published version (APA):

CC-MUSIC: An Optimization Estimator for Mutual Coupling Correction of L-Shaped Nonuniform Array with Single Snapshot

by Yuguan Hou , Tongyu Zhang , Shaochuan Wu
"... For the case of the single snapshot, the integrated SNR gain could not be obtained without the multiple snapshots, which degrades the mutual coupling correction performance under the lower SNR case. In this paper, a Convex Chain MUSIC (CC-MUSIC) algorithm is proposed for the mutual coupling correct ..."
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For the case of the single snapshot, the integrated SNR gain could not be obtained without the multiple snapshots, which degrades the mutual coupling correction performance under the lower SNR case. In this paper, a Convex Chain MUSIC (CC-MUSIC) algorithm is proposed for the mutual coupling
Results 1 - 10 of 681