Search Results for author: Hrushikesh N. Mhaskar

Found 7 papers, 0 papers with code

Kernel based analysis of massive data

no code implementations30 Mar 2020 Hrushikesh N. Mhaskar

In this paper, we develop a very general theory of approximation by networks, which we have called eignets, to achieve local, stratified approximation.

BIG-bench Machine Learning

Theory inspired deep network for instantaneous-frequency extraction and signal components recovery from discrete blind-source data

no code implementations31 Jan 2020 Charles K. Chui, Ningning Han, Hrushikesh N. Mhaskar

This paper is concerned with the inverse problem of recovering the unknown signal components, along with extraction of their instantaneous frequencies (IFs), governed by the adaptive harmonic model (AHM), from discrete (and possibly non-uniform) samples of the blind-source composite signal.

Dimension independent bounds for general shallow networks

no code implementations26 Aug 2019 Hrushikesh N. Mhaskar

In the context of manifold learning, our bounds provide estimates on the degree of approximation for an out-of-sample extension of the target function to the ambient space.

Deep Algorithms: designs for networks

no code implementations6 Jun 2018 Abhejit Rajagopal, Shivkumar Chandrasekaran, Hrushikesh N. Mhaskar

A new design methodology for neural networks that is guided by traditional algorithm design is presented.

Function approximation with zonal function networks with activation functions analogous to the rectified linear unit functions

no code implementations24 Sep 2017 Hrushikesh N. Mhaskar

A zonal function (ZF) network on the $q$ dimensional sphere $\mathbb{S}^q$ is a network of the form $\mathbf{x}\mapsto \sum_{k=1}^n a_k\phi(\mathbf{x}\cdot\mathbf{x}_k)$ where $\phi :[-1, 1]\to\mathbf{R}$ is the activation function, $\mathbf{x}_k\in\mathbb{S}^q$ are the centers, and $a_k\in\mathbb{R}$.

A Fourier-invariant method for locating point-masses and computing their attributes

no code implementations26 Jul 2017 Charles K. Chui, Hrushikesh N. Mhaskar

Motivated by the interest of observing the growth of cancer cells among normal living cells and exploring how galaxies and stars are truly formed, the objective of this paper is to introduce a rigorous and effective method for counting point-masses, determining their spatial locations, and computing their attributes.

A unified method for super-resolution recovery and real exponential-sum separation

no code implementations26 Jul 2017 Charles K. Chui, Hrushikesh N. Mhaskar

In this paper, motivated by diffraction of traveling light waves, a simple mathematical model is proposed, both for the multivariate super-resolution problem and the problem of blind-source separation of real-valued exponential sums.

Astronomy blind source separation +2

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