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Creators/Authors contains: "Dou, Zehao"

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  1. ; ; (, The Annals of Statistics)
    Full Text Available 
  2. ; ; ; ; (, Conference on Learning Theory)
    We consider the well-studied problem of learning a linear combination of k ReLU activations with respect to a Gaussian distribution on inputs in d dimensions. We give the first polynomial-time algorithm that succeeds whenever k is a constant. All prior polynomial-time learners require additional assumptions on the network, such as positive combining coefficients or the matrix of hidden weight vectors being well-conditioned. Our approach is based on analyzing random contractions of higher-order moment tensors. We use a multi-scale analysis to argue that sufficiently close neurons can be collapsed together, sidestepping the conditioning issues present in prior work. This allows us to design an iterative procedure to discover individual neurons. 
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    Accepted Manuscript Full Text Available
  3. ; ; ; ; (, The Thirty Sixth Annual Conference on Learning Theory (COLT 2023))
    Accepted Manuscript Full Text Available