Search Results for author: Hanyu Zhang

Found 12 papers, 2 papers with code

Manifold learning: what, how, and why

no code implementations7 Nov 2023 Marina Meilă, Hanyu Zhang

Manifold learning (ML), known also as non-linear dimension reduction, is a set of methods to find the low dimensional structure of data.

Dimensionality Reduction

Asset Bundling for Wind Power Forecasting

no code implementations28 Sep 2023 Hanyu Zhang, Mathieu Tanneau, Chaofan Huang, V. Roshan Joseph, Shangkun Wang, Pascal Van Hentenryck

This approach effectively introduces an auxiliary learning task (predicting the bundle-level time series) to help the main learning tasks.

Auxiliary Learning Time Series

Optimization-based Learning for Dynamic Load Planning in Trucking Service Networks

no code implementations8 Jul 2023 Ritesh Ojha, Wenbo Chen, Hanyu Zhang, Reem Khir, Alan Erera, Pascal Van Hentenryck

The paper also proposes an optimization proxy to address the computational challenges of the optimization models.

Transfer Learning for Causal Effect Estimation

no code implementations16 May 2023 Song Wei, Hanyu Zhang, Ronald Moore, Rishikesan Kamaleswaran, Yao Xie

We present a Transfer Causal Learning (TCL) framework when target and source domains share the same covariate/feature spaces, aiming to improve causal effect estimation accuracy in limited data.

regression Transfer Learning

Changes in Commuter Behavior from COVID-19 Lockdowns in the Atlanta Metropolitan Area

no code implementations27 Feb 2023 Tejas Santanam, Anthony Trasatti, Hanyu Zhang, Connor Riley, Pascal Van Hentenryck, Ramayya Krishnan

This paper analyzes the impact of COVID-19 related lockdowns in the Atlanta, Georgia metropolitan area by examining commuter patterns in three periods: prior to, during, and after the pandemic lockdown.

Clustering Word Embeddings

The Parametric Stability of Well-separated Spherical Gaussian Mixtures

no code implementations1 Feb 2023 Hanyu Zhang, Marina Meila

We quantify the parameter stability of a spherical Gaussian Mixture Model (sGMM) under small perturbations in distribution space.

Dictionary-based Manifold Learning

1 code implementation1 Feb 2023 Hanyu Zhang, Samson Koelle, Marina Meila

We propose a paradigm for interpretable Manifold Learning for scientific data analysis, whereby we parametrize a manifold with $d$ smooth functions from a scientist-provided dictionary of meaningful, domain-related functions.

regression

Risk-Aware Control and Optimization for High-Renewable Power Grids

no code implementations2 Apr 2022 Neil Barry, Minas Chatzos, Wenbo Chen, Dahye Han, Chaofan Huang, Roshan Joseph, Michael Klamkin, Seonho Park, Mathieu Tanneau, Pascal Van Hentenryck, Shangkun Wang, Hanyu Zhang, Haoruo Zhao

The transition of the electrical power grid from fossil fuels to renewable sources of energy raises fundamental challenges to the market-clearing algorithms that drive its operations.

Uncertainty Quantification Vocal Bursts Intensity Prediction

Distribution free optimality intervals for clustering

no code implementations30 Jul 2021 Marina Meilă, Hanyu Zhang

We demonstrate the practical relevance of this method by obtaining guarantees for the K-means and the Normalized Cut clustering criteria on realistic data sets.

Clustering

Public Transit for Special Events: Ridership Prediction and Train Optimization

no code implementations9 Jun 2021 Tejas Santanam, Anthony Trasatti, Pascal Van Hentenryck, Hanyu Zhang

This paper proposes a suite of data-driven techniques that exploit Automated Fare Collection (AFC) data for evaluating, anticipating, and managing the performance of transit systems during recurring congestion peaks due to special events.

Manifold Coordinates with Physical Meaning

2 code implementations29 Nov 2018 Samson Koelle, Hanyu Zhang, Marina Meila, Yu-Chia Chen

Manifold embedding algorithms map high-dimensional data down to coordinates in a much lower-dimensional space.

Dimensionality Reduction

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