Stephen Becker

picture

Research interests:

  • Convex optimization
  • Compressed sensing
  • Matrix completion

Biography 

Dr. Stephen Becker received his B.A. degrees in mathematics and in physics from Wesleyan University in 2005, and his Ph.D. degree in Applied & Computational Mathematics from the California Institute of Technology in 2011. Later he was a postdoctoral researcher hosted at the Laboratoire Jacques-Louis Lions in Paris 6, thanks to a fellowship by Foundation Sciences Mathématiques de Paris. In September 2011 he started working as the  Goldstine Memorial Postdoc at the IBM Watson research lab. In fall 2014 he joined the department of Applied Math of University of Colorado Boulder as an Assistant Professor. His research interests are in large-scale methods for convex programming, non-convex optimization, and image processing.

Links

Website: http://ugcs.caltech.edu/~srbecker/


PUBLICATIONS

V. S. Neverov; A. B. Kukushkin; U. Kruezi; M. F. Stamp; H. Weisen et al. : Determination of isotope ratio in the divertor of JET-ILW by high-resolution H alpha spectroscopy: H-D experiment and implications for D-T experiment; Nuclear Fusion. 2019-04-01. DOI : 10.1088/1741-4326/ab0000.
P. Strom; P. Petersson; M. Rubel; E. Fortuna-Zalesna; A. Widdowson et al. : Analysis of deposited layers with deuterium and impurity elements on samples from the divertor of JET with ITER-like wall; Journal Of Nuclear Materials. 2019-04-01. DOI : 10.1016/j.jnucmat.2018.11.027.
Z. Ivezic; S. M. Kahn; J. A. Tyson; B. Abel; E. Acosta et al. : LSST: From Science Drivers to Reference Design and Anticipated Data Products; Astrophysical Journal. 2019-03-10. DOI : 10.3847/1538-4357/ab042c.
K. D. Lawson; K. M. Aggarwal; I. H. Coffey; F. P. Keenan; M. G. O'Mullane et al. : Population modelling of the He II energy levels in tokamak plasmas: I. Collisional excitation model; Journal Of Physics B-Atomic Molecular And Optical Physics. 2019-02-28. DOI : 10.1088/1361-6455/aaf703.
G. Sias; B. Cannas; A. Fanni; A. Murari; A. Pau et al. : A locked mode indicator for disruption prediction on JET and ASDEX upgrade; Fusion Engineering And Design. 2019-01-01. DOI : 10.1016/j.fusengdes.2018.11.021.
Y. Hatano; S. E. Lee; J. Likonen; S. Koivuranta; M. Hara et al. : Tritium distributions on W-coated divertor tiles used in the third JET ITER-like wall campaign; Nuclear Materials And Energy. 2019-01-01. DOI : 10.1016/j.nme.2019.01.001.
J. Rzadkiewicz; Y. Yang; K. Koziol; M. G. O'Mullane; A. Patel et al. : High-resolution tungsten spectroscopy relevant to the diagnostic of high-temperature tokamak plasmas; Physical Review A. 2018-05-04. DOI : 10.1103/PhysRevA.97.052501.
T. M. Malta; A. Sokolov; A. J. Gentles; T. Burzykowski; L. Poisson et al. : Machine Learning Identifies Stemness Features Associated with Oncogenic Dedifferentiation; Cell. 2018-04-05. DOI : 10.1016/j.cell.2018.03.034.
D. Rigamonti; L. Giacomelli; G. Gorini; M. Nocente; M. Rebai et al. : Neutron spectroscopy measurements of 14 MeV neutrons at unprecedented energy resolution and implications for deuterium-tritium fusion plasma diagnostics; Measurement Science And Technology. 2018-04-01. DOI : 10.1088/1361-6501/aaa675.
P. Batistoni; S. Popovichev; A. Cufar; Z. Ghani; L. Giacomelli et al. : 14 MeV calibration of JET neutron detectors-phase 1: calibration and characterization of the neutron source; Nuclear Fusion. 2018-02-01. DOI : 10.1088/1741-4326/aa98f6.
X. Litaudon; S. Abduallev; M. Abhangi; P. Abreu; M. Afzal et al. : Overview of the JET results in support to ITER; Nuclear Fusion. 2017. DOI : 10.1088/1741-4326/aa5e28.
D. J. Klionsky; K. Abdelmohsen; A. Abe; M. J. Abedin; H. Abeliovich et al. : Guidelines for the use and interpretation of assays for monitoring autophagy (3rd edition); Autophagy. 2016. DOI : 10.1080/15548627.2015.1100356.
H. Zhao; R. Ghirlando; C. Alfonso; F. Arisaka; I. Attali et al. : A Multilaboratory Comparison of Calibration Accuracy and the Performance of External References in Analytical Ultracentrifugation; Plos One. 2015. DOI : 10.1371/journal.pone.0126420.
J. J. Bruer; J. A. Tropp; V. Cevher; S. Becker : Designing Statistical Estimators That Balance Sample Size, Risk, and Computational Cost; IEEE Journal of Selected Topics in Signal Processing. 2015. DOI : 10.1109/Jstsp.2015.2400412.
V. Cevher; S. Becker; M. Schmidt : Convex Optimization for Big Data; IEEE Signal Processing Magazine. 2014. DOI : 10.1109/MSP.2014.2329397.
J. J. Bruer; J. A. Tropp; V. Cevher; S. R. Becker : Time–Data Tradeoffs by Aggressive Smoothing. 2014. Conference of Neural Information Processing Systems (NIPS) Foundation 2014, Montreal, Quebec, Canada, December 8-11, 2014.
A. Aravkin; S. Becker; V. Cevher; P. Olsen : A variational approach to stable principal component pursuit. 2014. 30th Conference on Uncertainty in Artificial Intelligence (UAI) 2014, Quebec City, Quebeck, Canada, July 23-27, 2014.
B. Bah; V. Cevher; S. Becker; B. Gözcü : Metric Learning with Rank and Sparsity Constraints. 2014. IEEE International Conference on Acoustics, Speech and Signal Processing, Florence, Italy, May 4-9, 2014.
A. Kyrillidis; S. Becker; V. Cevher; C. Koch : Sparse projections onto the simplex. 2013. The 30th International Conference on Machine Learning (ICML) 2013, Atlanta, USA, June 16-21, 2013. p. 280-288.
S. Becker; V. Cevher; A. Kyrillidis : Randomized Low-Memory Singular Value Projection. 2013. 10th International Conference on Sampling Theory and Applications (Sampta), Bremen, Germany, July 1st - July 5th, 2013.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : Background studies for acoustic neutrino detection at the South Pole; Astroparticle Physics. 2012. DOI : 10.1016/j.astropartphys.2011.09.004.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : Neutrino Analysis Of The 2010 September Crab Nebula Flare And Time-Integrated Constraints On Neutrino Emission From The Crab Using Icecube; Astrophysical Journal. 2012. DOI : 10.1088/0004-637X/745/1/45.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : Time-Dependent Searches For Point Sources Of Neutrinos With The 40-String And 22-String Configurations Of Icecube; Astrophysical Journal. 2012. DOI : 10.1088/0004-637X/744/1/1.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : Measurement of the atmospheric neutrino energy spectrum from 100 GeV to 400 TeV with IceCube; Physical Review D. 2011. DOI : 10.1103/PhysRevD.83.012001.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; O. Actis; J. Adams et al. : Search for neutrino-induced cascades with five years of AMANDA data; Astroparticle Physics. 2011. DOI : 10.1016/j.astropartphys.2010.10.007.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : Measurement of acoustic attenuation in South Pole ice; Astroparticle Physics. 2011. DOI : 10.1016/j.astropartphys.2010.10.003.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : Constraints on high-energy neutrino emission from SN 2008D; Astronomy & Astrophysics. 2011. DOI : 10.1051/0004-6361/201015770.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : TIME-INTEGRATED SEARCHES FOR POINT-LIKE SOURCES OF NEUTRINOS WITH THE 40-STRING IceCube DETECTOR; Astrophysical Journal. 2011. DOI : 10.1088/0004-637X/732/1/18.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : Limits on Neutrino Emission from Gamma-Ray Bursts with the 40 String IceCube Detector; Physical Review Letters. 2011. DOI : 10.1103/PhysRevLett.106.141101.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : Constraints on the extremely-high energy cosmic neutrino flux with the IceCube 2008-2009 data; Physical Review D. 2011. DOI : 10.1103/PhysRevD.83.092003.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : Search for dark matter from the Galactic halo with the IceCube Neutrino Telescope; Physical Review D. 2011. DOI : 10.1103/PhysRevD.84.022004.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : OBSERVATION OF ANISOTROPY IN THE ARRIVAL DIRECTIONS OF GALACTIC COSMIC RAYS AT MULTIPLE ANGULAR SCALES WITH IceCube; Astrophysical Journal. 2011. DOI : 10.1088/0004-637X/740/1/16.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : First search for atmospheric and extraterrestrial neutrino-induced cascades with the IceCube detector; Physical Review D. 2011. DOI : 10.1103/PhysRevD.84.072001.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : Search for a diffuse flux of astrophysical muon neutrinos with the IceCube 40-string detector; Physical Review D. 2011. DOI : 10.1103/PhysRevD.84.082001.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : Search for relativistic magnetic monopoles with the AMANDA-II neutrino telescope; European Physical Journal C. 2010. DOI : 10.1140/epjc/s10052-010-1411-6.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : Search for a Lorentz-violating sidereal signal with atmospheric neutrinos in IceCube; Physical Review D. 2010. DOI : 10.1103/PhysRevD.82.112003.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : Measurement Of The Anisotropy Of Cosmic-Ray Arrival Directions With Icecube; The Astrophysical Journal. 2010. DOI : 10.1088/2041-8205/718/2/L194.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : SEARCH FOR MUON NEUTRINOS FROM GAMMA-RAY BURSTS WITH THE IceCube NEUTRINO TELESCOPE; The Astrophysical Journal. 2010. DOI : 10.1088/0004-637X/710/1/346.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. Aguilar et al. : First search for extremely high energy cosmogenic neutrinos with the IceCube Neutrino Observatory; Physical Review D. 2010. DOI : 10.1103/PhysRevD.82.072003.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : Limits on a muon flux from Kaluza-Klein dark matter annihilations in the Sun from the IceCube 22-string detector; Physical Review D. 2010. DOI : 10.1103/PhysRevD.81.057101.
R. Abbasi; Y. Abdou; M. Ackermann; J. Adams; M. Ahlers et al. : Limits on a Muon Flux from Neutralino Annihilations in the Sun with the IceCube 22-String Detector; Physical Review Letters. 2009. DOI : 10.1103/PhysRevLett.102.201302.
R. Abbasi; Y. Abdou; M. Ackermann; J. Adams; M. Ahlers et al. : Determination of the atmospheric neutrino flux and searches for new physics with AMANDA-II; Physical Review D. 2009. DOI : 10.1103/PhysRevD.79.102005.
R. Abbasi; Y. Abdou; M. Ackermann; J. Adams; M. Ahlers et al. : ERRATUM: “SEARCH FOR HIGH-ENERGY MUON NEUTRINOS FROM THE “NAKED-EYE” GRB 080319B WITH THE ICECUBE NEUTRINO TELESCOPE” (2009, ApJ, 701, 1721); The Astrophysical Journal. 2009. DOI : 10.1088/0004-637X/708/1/911.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. A. Aguilar et al. : SEARCH FOR HIGH-ENERGY MUON NEUTRINOS FROM THE “NAKED-EYE” GRB 080319B WITH THE IceCube NEUTRINO TELESCOPE; The Astrophysical Journal. 2009. DOI : 10.1088/0004-637X/701/2/1721.
R. Abbasi; Y. Abdou; M. Ackermann; J. Adams; J. Aguilar et al. : First Neutrino Point-Source Results From The 22 String Icecube Detector; The Astrophysical Journal. 2009. DOI : 10.1088/0004-637X/701/1/L47.
R. Abbasi; Y. Abdou; T. Abu-Zayyad; J. Adams; J. Aguilar et al. : Extending the search for neutrino point sources with iceCube above the horizon; Physical Review Letters. 2009. DOI : 10.1103/PhysRevLett.103.221102.
S. Schael; R. Barate; R. Brunelière; D. Buskulic; I. de Bonis et al. : Precision electroweak measurements on the Z resonance☆☆☆; Physics Reports. 2006. DOI : 10.1016/j.physrep.2005.12.006.