Search Results for author: David Hong

Found 8 papers, 1 papers with code

Streaming Probabilistic PCA for Missing Data with Heteroscedastic Noise

no code implementations10 Oct 2023 Kyle Gilman, David Hong, Jeffrey A. Fessler, Laura Balzano

Streaming principal component analysis (PCA) is an integral tool in large-scale machine learning for rapidly estimating low-dimensional subspaces of very high dimensional and high arrival-rate data with missing entries and corrupting noise.

Astronomy

Provable tradeoffs in adversarially robust classification

no code implementations9 Jun 2020 Edgar Dobriban, Hamed Hassani, David Hong, Alexander Robey

It is well known that machine learning methods can be vulnerable to adversarially-chosen perturbations of their inputs.

Classification General Classification +1

Baseline Estimation of Commercial Building HVAC Fan Power Using Tensor Completion

no code implementations24 Apr 2020 Shunbo Lei, David Hong, Johanna L. Mathieu, Ian A. Hiskens

Commercial building heating, ventilation, and air conditioning (HVAC) systems have been studied for providing ancillary services to power grids via demand response (DR).

counterfactual

Stochastic Gradients for Large-Scale Tensor Decomposition

no code implementations4 Jun 2019 Tamara G. Kolda, David Hong

The stochastic gradient is formed from randomly sampled elements of the tensor and is efficient because it can be computed using the sparse matricized-tensor-times-Khatri-Rao product (MTTKRP) tensor kernel.

Tensor Decomposition

Convolutional Analysis Operator Learning: Dependence on Training Data

3 code implementations21 Feb 2019 Il Yong Chun, David Hong, Ben Adcock, Jeffrey A. Fessler

Convolutional analysis operator learning (CAOL) enables the unsupervised training of (hierarchical) convolutional sparsifying operators or autoencoders from large datasets.

Open-Ended Question Answering Operator learning

Generalized Canonical Polyadic Tensor Decomposition

no code implementations22 Aug 2018 David Hong, Tamara G. Kolda, Jed A. Duersch

Tensor decomposition is a fundamental unsupervised machine learning method in data science, with applications including network analysis and sensor data processing.

Tensor Decomposition

Subspace Clustering using Ensembles of $K$-Subspaces

no code implementations14 Sep 2017 John Lipor, David Hong, Yan Shuo Tan, Laura Balzano

We present a novel geometric approach to the subspace clustering problem that leverages ensembles of the K-subspaces (KSS) algorithm via the evidence accumulation clustering framework.

Clustering

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