From David and Tibault here is an announcement:
Thanks David and Tibault.
Vlad is implementing OMP in Python for insertion in scikits.learn. He recently implemented a sparse PCA algo on that platform.
Bob has some entries on his blog after a short break:
- Paper of the Day (Po'D): Matching Pursuits with Random Sequential Subdictionaries Edition
- Coming Papers
In the last entry, Bob mentioned a poster shown a SAHD by Phil Schniter and Jeremy Vila entitled An Empirical-Bayes Approach to Compressed Sensing via Approximate Message Passing.
Zhilin tells us about a paper that took seven years to publication.
Petros Boufounos announced one of his paper:High Resolution SAR Imaging Using Random Pulse Timing by Dehong Liu, Petros T. Boufounos
Synthetic Aperture Radar (SAR) is a fundamental technology with signiﬁcant impact in remote sensing applications. SAR relies on the motion of the radar platform to synthesize a large aperture, and achieve high resolution imaging of a large area. However, current strip-map SAR designs, relying on uniform pulsing, suffer from a fundamental trade-off between the azimuth resolution and the range coverage length. In this paper we overcome this trade-off using a randomized pulsing scheme combined with non-linear compressive sensing (CS) reconstruction. Our experimental results demonstrate signiﬁcant improvement in the azimuth resolution using the proposed approach, without compromise on the range length of the imaged area.
Finally, of interest is the following video. At issue is not whether statements by the maker of Minecraft is true or not, but rather that there would be discussion on the claim. It looks as though some of the numbers we are able to deal with on a computer can now reach the actual size of the population being modeled (6 billion faces for instance for dictionary learning for face recognition).
Credit: NASA / JPL / SSI / color composite by Emily Lakdawalla, A gaggle of moons, Cassini caught five moons at the edge of Saturn's ring system in this natural color photo from July 29, 2011. From left to right the moons are Janus, Pandora, Enceladus, Mimas, and Rhea.