Search Results for author: Zitong Yang

Found 7 papers, 5 papers with code

Bellman Conformal Inference: Calibrating Prediction Intervals For Time Series

1 code implementation7 Feb 2024 Zitong Yang, Emmanuel Candès, Lihua Lei

We introduce Bellman Conformal Inference (BCI), a framework that wraps around any time series forecasting models and provides approximately calibrated prediction intervals.

Prediction Intervals Time Series +1

Predicting Out-of-Distribution Error with the Projection Norm

1 code implementation11 Feb 2022 Yaodong Yu, Zitong Yang, Alexander Wei, Yi Ma, Jacob Steinhardt

Projection Norm first uses model predictions to pseudo-label test samples and then trains a new model on the pseudo-labels.

Pseudo Label text-classification +1

Understanding Generalization in Adversarial Training via the Bias-Variance Decomposition

1 code implementation17 Mar 2021 Yaodong Yu, Zitong Yang, Edgar Dobriban, Jacob Steinhardt, Yi Ma

To investigate this gap, we decompose the test risk into its bias and variance components and study their behavior as a function of adversarial training perturbation radii ($\varepsilon$).

Exact Gap between Generalization Error and Uniform Convergence in Random Feature Models

no code implementations8 Mar 2021 Zitong Yang, Yu Bai, Song Mei

We show that, in the setting where the classical uniform convergence bound is vacuous (diverges to $\infty$), uniform convergence over the interpolators still gives a non-trivial bound of the test error of interpolating solutions.

Rethinking Bias-Variance Trade-off for Generalization of Neural Networks

1 code implementation ICML 2020 Zitong Yang, Yaodong Yu, Chong You, Jacob Steinhardt, Yi Ma

We provide a simple explanation for this by measuring the bias and variance of neural networks: while the bias is monotonically decreasing as in the classical theory, the variance is unimodal or bell-shaped: it increases then decreases with the width of the network.

Service Wrapper: a system for converting web data into web services

1 code implementation17 Oct 2019 Naibo Wang, Zhiling Luo, Xiya Lyu, Zitong Yang, Jianwei Yin

In this work, we construct a service wrapper system to convert available data in web pages into web services.

Complete Dictionary Learning via $\ell^4$-Norm Maximization over the Orthogonal Group

no code implementations6 Jun 2019 Yuexiang Zhai, Zitong Yang, Zhenyu Liao, John Wright, Yi Ma

Most existing methods solve the dictionary (and sparse representations) based on heuristic algorithms, usually without theoretical guarantees for either optimality or complexity.

Dictionary Learning

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