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20022008
most citedA direct formulation for sparse PCA using semidefinite programming

125 citations

Showing 2008Show all

7 papers · 1 filter

quant-ph20085 cited

The Detectability Lemma and Quantum Gap Amplification

Dorit Aharonov, Itai Arad, Zeph Landau +1

The quantum analogue of a constraint satisfaction problem is a sum of local Hamiltonians - each local Hamiltonian specifies a local constraint whose violation contributes to the en…

astro-ph20085 cited

A shift in Jupiter's equatorial haze distribution imaged with the Multi-Conjugate Adaptive Optics Demonstrator at the VLT

Michael H. Wong, Franck Marchis, Enrico Marchetti +4

Jupiter was imaged during the Science Demonstration of the MCAO Demonstrator (MAD) at the European Southern Observatory's UT3 Very Large Telescope unit. Io and Europa were used as…

astro-ph2008

Resolved Properties of Extragalactic Giant Molecular Clouds

Alberto D. Bolatto, Adam K. Leroy, Erik Rosolowsky +2

Giant molecular clouds (GMCs) are the major reservoirs of molecular gas in galaxies, and the starting point for star formation. As such, their properties play a key role in setting…

astro-ph20081 cited

Candidate AGNs in Late-Type Galaxies

Louis-Benoit Desroches, Luis Ho

We have assembled a sample of 64 late-type spiral galaxies (T types 6.0-9.0, corresponding to Hubble types Scd-Sm) with archival Chandra data. At a signal-to-noise (S/N) threshold…

cs.IT2008

Lower Bounds on the Rate-Distortion Function of LDGM Codes

A. G. Dimakis, M. J. Wainwright, K. Ramchandran

A recent line of work has focused on the use of low-density generator matrix (LDGM) codes for lossy source coding. In this paper, wedevelop a generic technique for deriving lower b…

astro-ph20081 cited

Fuel for Galaxy Disks

M. E. Putman, J. Grcevich, J. E. G. Peek

Halo clouds have been found about the three largest galaxies of the Local Group and in the halos of nearby spirals. This suggests they are a relatively generic feature of the galax…