Search Results for author: William J. Welch

Found 11 papers, 5 papers with code

Data-Adaptive Dimensional Analysis for Accurate Interpolation and Extrapolation in Computer Experiments

no code implementations14 Dec 2023 G. Alexi Rodriguez-Arelis, William J. Welch

Dimensional analysis (DA) pays attention to fundamental physical dimensions such as length and mass when modelling scientific and engineering systems.

valid

Distilling and Transferring Knowledge via cGAN-generated Samples for Image Classification and Regression

2 code implementations7 Apr 2021 Xin Ding, Yongwei Wang, Zuheng Xu, Z. Jane Wang, William J. Welch

Knowledge distillation (KD) has been actively studied for image classification tasks in deep learning, aiming to improve the performance of a student based on the knowledge from a teacher.

General Classification Image Classification +2

Continuous Conditional Generative Adversarial Networks: Novel Empirical Losses and Label Input Mechanisms

1 code implementation ICLR 2021 Xin Ding, Yongwei Wang, Zuheng Xu, William J. Welch, Z. Jane Wang

This work proposes the continuous conditional generative adversarial network (CcGAN), the first generative model for image generation conditional on continuous, scalar conditions (termed regression labels).

Generative Adversarial Network Image Generation +1

Classification Beats Regression: Counting of Cells from Greyscale Microscopic Images based on Annotation-free Training Samples

1 code implementation28 Oct 2020 Xin Ding, Qiong Zhang, William J. Welch

Modern methods often formulate the counting of cells from microscopic images as a regression problem and more or less rely on expensive, manually annotated training images (e. g., dot annotations indicating the centroids of cells or segmentation masks identifying the contours of cells).

Data Augmentation Image Classification

Sequential Computer Experimental Design for Estimating an Extreme Probability or Quantile

no code implementations14 Aug 2019 Hao Chen, William J. Welch

A computer code can simulate a system's propagation of variation from random inputs to output measures of quality.

Experimental Design

Bayesian Optimization Using Monotonicity Information and Its Application in Machine Learning Hyperparameter

no code implementations10 Feb 2018 Wenyi Wang, William J. Welch

We propose an algorithm for a family of optimization problems where the objective can be decomposed as a sum of functions with monotonicity properties.

Bayesian Optimization BIG-bench Machine Learning

Regression Phalanxes

no code implementations3 Jul 2017 Hongyang Zhang, William J. Welch, Ruben H. Zamar

Tomal et al. (2015) introduced the notion of "phalanxes" in the context of rare-class detection in two-class classification problems.

Clustering Drug Discovery +2

Ensembling classification models based on phalanxes of variables with applications in drug discovery

no code implementations20 Mar 2013 Jabed H. Tomal, William J. Welch, Ruben H. Zamar

Because the class of interest is rare in the training data, there is relatively little information in the known class response labels for model building.

Drug Discovery General Classification

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