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Browsing MIT Open Access Articles by Title

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  • Belloni, Alexandre; Chernozhukov, Victor V. (Bernoulli Society for Mathematical Statistics and Probability, )
    We study post-model selection estimators which apply ordinary least squares (ols) to the model selected by first-step penalized estimators. It is well known that lasso can estimate the nonparametric regression function at ...
  • Yu, Huizhen (Society for Industrial and Applied Mathematics, 2012-12)
    We consider approximate policy evaluation for finite state and action Markov decision processes (MDP) with the least squares temporal difference (LSTD) algorithm, LSTD($\lambda$), in an exploration-enhanced learning context, ...
  • Maydanskiy, Maksim; Seidel, Paul (Oxford University Press, 2010-03)
    Using Lefschetz fibrations, we construct nonstandard symplectic structures on cotangent bundles of spheres. These structures are of Liouville type, which means exact and convex at infinity.
  • Bain, Daniel J.; Green, Mark B.; Campbell, John L.; Chamblee, John F.; Chaoka, Sayo; Fraterrigo, Jennifer M.; Kaushal, Sujay S.; Martin, Sherry L.; Jordan, Thomas E.; Parolari, Anthony J.; Sobczak, William V.; Weller, Donald E.; Wollheim, Wilfred M.; Boose, Emery R.; Duncan, Jonathan M.; Gettel, Gretchen M.; Hall, Brian R.; Kumar, Praveen; Thompson, Jonathan R.; Vose, James M.; Elliott, Emily M.; Leigh, David S. (University of California Press, 2012-06)
    Legacy effects of past land use and disturbance are increasingly recognized, yet consistent definitions of and criteria for defining them do not exist. To address this gap in biological- and ecosystem-assessment frameworks, ...
  • Madnick, Stuart E.; Zhu, Hongwei (Information Systems Department, College of Business Administration, California State University, Long Beach, 2010-09)
    New technologies have been continuously emerging to enable effective reuse of an ever-growing amount of data on the Web. Innovative firms can leverage the available technologies and data to provide useful services. ...
  • Krumme, Katherine Ann; Herrero Lopez, Sergio (Institute of Electrical and Electronics Engineers, 2009-10)
    Increasingly, economic transactions are taking place over social networks. We study the static and dynamic characteristics of a peer-to-peer lending network through 350,000 loan listings and accompanying member profiles ...
  • Moon, SangJun; Keles, Hasan Onur; Kim, Yun-Gon; Kuritzkes, Daniel; Demirci, Utkan (Institute of Electrical and Electronics Engineers, 2009-11)
    We show a platform that merges a microfluidic chip with lensless imaging for CD4[superscript +] T-lymphocyte counting at resource-limited settings. To capture CD4[superscript +] T lymphocytes, anti-CD4[superscript +] ...
  • De Simone, Andrea; Fan, JiJi; Sanz, Veronica; Skiba, Witold (American Physical Society, 2009-08)
    Leptogenic supersymmetry is a scenario characterized by cascade decays with copious lepton production. Leptogenic models have striking signatures that can be probed by the LHC even in the 10 TeV run with as little as ...
  • Picard, Rosalind W.; Goodwin, Matthew; Hoque, Mohammed Ehasanul; Eckhardt, Micah Rye; El Kaliouby, Rana; Madsen, Miriam A. (Association for Computing Machinery, 2009-04)
    Participatory user interface design with adolescent users on the autism spectrum presents a number of unique challenges and opportunities. Through our work developing a system to help autistic adolescents learn to recognize ...
  • Busza, Wit (Elsevier, 2009-11)
    In June 2005 the PHOBOS Collaboration completed data taking at RHIC. In five years of operation PHOBOS recorded information for Au+Au at √sNN = 19.6, 62.4, 130, and 200 GeV, Cu+Cu at 22.4, 62.4 and 200 GeV, d+Au at 201 ...
  • Willsky, Alan S.; Pravia, Marco A.; Babko-Malaya, Olga; Schneider, Michael K.; White, James V.; Chong, Chee-Yee (Institute of Electrical and Electronics Engineers, 2009-08)
    Recent experiences in urban operations highlight the need for automated methods to help execute the data collection and association functions in the intelligence process. Technology development in this area has been ...
  • Gurtan, Allan; Ravi, Arvind; Bosson, Andrew David; JnBaptiste, Courtney Kenneil; Bhutkar, Arjun; Whittaker, Charles A.; Young, Richard A.; Sharp, Phillip A.; Rahl, Peter B. (Cold Spring Harbor Laboratory Press, 2013-04)
    MicroRNAs (miRNAs) are critical to proliferation, differentiation, and development. Here, we characterize gene expression in murine Dicer-null adult mesenchymal stem cell lines, a fibroblast cell type. Loss of Dicer leads ...
  • Ackerman, Joshua; Griskevicius, Vladas; Li, Norman P. (American Psychological Association., 2011-06)
    Are men or women more likely to confess love first in romantic relationships? And how do men and women feel when their partners say “I love you”? An evolutionary–economics perspective contends that women and men incur ...
  • Sheng, Morgan Hwa-Tze; Fisher, Daniel; Xing, Bin; Dill, John; Li, Hui; Hoang, Hai Hiep; Zhao, Zhenze; Yang, Xiao-Li; Bachoo, Robert; Cannon, Stephen; Longo, Frank M.; Silver, Jerry; Li, Shuxin (Society for Neuroscience, 2011-10)
    Chondroitin sulfate proteoglycans (CSPGs) are a family of extracellular matrix molecules with various functions in regulating tissue morphogenesis, cell division, and axon guidance. A number of CSPGs are highly upregulated ...
  • Milbradt, Konstantin (Oxford University Press, 2011-11)
    Fair value accounting forces institutions to revalue inventory whenever a transaction occurs. An institution that faces a balance sheet constraint may have incentives to suspend trading in Level 3 assets (traded on opaque ...
  • Cantuti-Castelvetri, Ippolita; Keller-McGandy, Christine E.; Kett, Lauren R.; Landy, Alex; Hollingsworth, Zane R.; Saka, Esen; Crittenden, Jill R.; Nillni, Eduardo A.; Young, Anne B.; Standaert, David G.; Graybiel, Ann M.; F. Hernandez, Ledia (Public Library of Science, 2010-11)
    Background Dyskinesias associated with involuntary movements and painful muscle contractions are a common and severe complication of standard levodopa (L-DOPA, L-3,4-dihydroxyphenylalanine) therapy for Parkinson's ...
  • Williams, M. (Institute of Physics Publishing for SISSA Medialab, 2013-04)
    This paper presents the design of the LHCb trigger and its performance on data taken at the LHC in 2011. A principal goal of LHCb is to perform flavour physics measurements, and the trigger is designed to distinguish charm ...
  • Gill, Mark E.; Hu, Yueh-Chiang; Lin, Yanfeng; Page, David C. (National Academy of Sciences, 2011-05)
    Mammalian oocytes and spermatozoa derive from fetal cells shared by the sexes. These primordial germ cells (PGCs) migrate to the developing somatic gonad, giving rise to oocytes or spermatozoa. These opposing sexual fates ...
  • Hamma, Alioscia; Markopoulou, Fotini; Premont-Schwarz, Isabeau; Severini, Simone (American Physical Society, 2009-01)
    We apply the Lieb-Robinson bounds technique to find the maximum speed of interaction in a spin model with topological order whose low-energy effective theory describes light [see X.-G. Wen, Phys. Rev. B 68, 115413 (2003)]. ...
  • De Sole, Alberto; Kac, Victor (Springer Berlin / Heidelberg, 2009-08)
    We find an interpretation of the complex of variational calculus in terms of the Lie conformal algebra cohomology theory. This leads to a better understanding of both theories. In par- ticular, we give an explicit ...
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