5 found
Order:
Disambiguations
Satyadev Nandakumar [3]Sansitha Nandakumar [1]S. Nandakumar [1]
  1.  20
    Authente-Kente: enabling authentication for artisanal economies with deep learning.Kwame Porter Robinson, Ron Eglash, Audrey Bennett, Sansitha Nandakumar & Lionel Robert - 2021 - AI and Society 36 (1):369-379.
    The economy for artisanal products, such as Navajo rugs or Pashmina shawls are often threatened by mass-produced fakes. We propose the use of AI-based authentication as one part of a larger system that would replace extractive economies with generative circulation. In this case study we examine initial experiments towards the development of a cell phone-based authentication app for kente cloth in West Africa. We describe the context of weavers and cloth sales; an initial test of a machine learning algorithm for (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  2.  60
    The impact of reporting magnetic resonance imaging incidental findings in the Canadian alliance for healthy hearts and minds cohort.Rhian Touyz, Amy Subar, Ian Janssen, Bob Reid, Eldon Smith, Caroline Wong, Pierre Boyle, Jean Rouleau, F. Henriques, F. Marcotte, K. Bibeau, E. Larose, V. Thayalasuthan, A. Moody, F. Gao, S. Batool, C. Scott, S. E. Black, C. McCreary, E. Smith, M. Friedrich, K. Chan, J. Tu, H. Poiffaut, J. -C. Tardif, J. Hicks, D. Thompson, L. Parker, R. Miller, J. Lebel, H. Shah, D. Kelton, F. Ahmad, A. Dick, L. Reid, G. Paraga, S. Zafar, N. Konyer, R. de Souza, S. Anand, M. Noseworthy, G. Leung, A. Kripalani, R. Sekhon, A. Charlton, R. Frayne, V. de Jong, S. Lear, J. Leipsic, A. -S. Bourlaud, P. Poirier, E. Ramezani, K. Teo, D. Busseuil, S. Rangarajan, H. Whelan, J. Chu, N. Noisel, K. McDonald, N. Tusevljak, H. Truchon, D. Desai, Q. Ibrahim, K. Ramakrishnana, C. Ramasundarahettige, S. Bangdiwala, A. Casanova, L. Dyal, K. Schulze, M. Thomas, S. Nandakumar, B. -M. Knoppers, P. Broet, J. Vena, T. Dummer, P. Awadalla, Matthias G. Friedrich, Douglas S. Lee, Jean-Claude Tardif, Erika Kleiderman & Marcotte - 2021 - BMC Medical Ethics 22 (1):1-15.
    BackgroundIn the Canadian Alliance for Healthy Hearts and Minds (CAHHM) cohort, participants underwent magnetic resonance imaging (MRI) of the brain, heart, and abdomen, that generated incidental findings (IFs). The approach to managing these unexpected results remain a complex issue. Our objectives were to describe the CAHHM policy for the management of IFs, to understand the impact of disclosing IFs to healthy research participants, and to reflect on the ethical obligations of researchers in future MRI studies.MethodsBetween 2013 and 2019, 8252 participants (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  3.  6
    A weakly 2-generic which Bounds a minimal degree.Rodney G. Downey & Satyadev Nandakumar - 2019 - Journal of Symbolic Logic 84 (4):1326-1347.
    Jockusch showed that 2-generic degrees are downward dense below a 2-generic degree. That is, if a is 2-generic, and $0 < {\bf{b}} < {\bf{a}}$, then there is a 2-generic g with $0 < {\bf{g}} < {\bf{b}}.$ In the case of 1-generic degrees Kumabe, and independently Chong and Downey, constructed a minimal degree computable from a 1-generic degree. We explore the tightness of these results.We solve a question of Barmpalias and Lewis-Pye by constructing a minimal degree computable from a weakly 2-generic (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  4.  8
    Martin-Löf Randomness Implies Multiple Recurrence in Effectively Closed Sets.Rodney G. Downey, Satyadev Nandakumar & André Nies - 2019 - Notre Dame Journal of Formal Logic 60 (3):491-502.
    This work contributes to the program of studying effective versions of “almost-everywhere” theorems in analysis and ergodic theory via algorithmic randomness. Consider the setting of Cantor space {0,1}N with the uniform measure and the usual shift. We determine the level of randomness needed for a point so that multiple recurrence in the sense of Furstenberg into effectively closed sets P of positive measure holds for iterations starting at the point. This means that for each k∈N there is an n such (...)
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  5.  30
    A characterization of constructive dimension.Satyadev Nandakumar - 2009 - Mathematical Logic Quarterly 55 (2):185-200.
    In the context of Kolmogorov's algorithmic approach to the foundations of probability, Martin‐Löf defined the concept of an individual random sequence using the concept of a constructive measure 1 set. Alternate characterizations use constructive martingales and measures of impossibility. We prove a direct conversion of a constructive martingale into a measure of impossibility and vice versa such that their success sets, for a suitably defined class of computable probability measures, are equal. The direct conversion is then generalized to give a (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark