Search Results for author: Runze Li

Found 17 papers, 1 papers with code

Time-aware Heterogeneous Graph Transformer with Adaptive Attention Merging for Health Event Prediction

no code implementations23 Apr 2024 Shibo Li, Hengliang Cheng, Runze Li, Weihua Li

The widespread application of Electronic Health Records (EHR) data in the medical field has led to early successes in disease risk prediction using deep learning methods.

Graph Learning Management

TransFusion: Covariate-Shift Robust Transfer Learning for High-Dimensional Regression

no code implementations1 Apr 2024 Zelin He, Ying Sun, Jingyuan Liu, Runze Li

Nonasymptotic bound is provided for the estimation error of the target model, showing the robustness of the proposed method to covariate shifts.

regression Transfer Learning

AdaTrans: Feature-wise and Sample-wise Adaptive Transfer Learning for High-dimensional Regression

no code implementations20 Mar 2024 Zelin He, Ying Sun, Jingyuan Liu, Runze Li

We consider the transfer learning problem in the high dimensional setting, where the feature dimension is larger than the sample size.

Transfer Learning

Enhancing Robustness of Gradient-Boosted Decision Trees through One-Hot Encoding and Regularization

no code implementations26 Apr 2023 Shijie Cui, Agus Sudjianto, Aijun Zhang, Runze Li

Gradient-boosted decision trees (GBDT) are widely used and highly effective machine learning approach for tabular data modeling.

regression

Detection and Estimation of Structural Breaks in High-Dimensional Functional Time Series

no code implementations14 Apr 2023 Degui Li, Runze Li, Han Lin Shang

In this paper, we consider detecting and estimating breaks in heterogeneous mean functions of high-dimensional functional time series which are allowed to be cross-sectionally correlated and temporally dependent.

Clustering Time Series

RECLIP: Resource-efficient CLIP by Training with Small Images

no code implementations12 Apr 2023 Runze Li, Dahun Kim, Bir Bhanu, Weicheng Kuo

We present RECLIP (Resource-efficient CLIP), a simple method that minimizes computational resource footprint for CLIP (Contrastive Language Image Pretraining).

Contrastive Learning Retrieval +3

Functional-Coefficient Quantile Regression for Panel Data with Latent Group Structure

no code implementations23 Mar 2023 Xiaorong Yang, Jia Chen, Degui Li, Runze Li

A latent group structure is imposed on the heterogenous quantile regression models so that the number of nonparametric functional coefficients to be estimated can be reduced considerably.

regression

MonoIndoor++:Towards Better Practice of Self-Supervised Monocular Depth Estimation for Indoor Environments

no code implementations18 Jul 2022 Runze Li, Pan Ji, Yi Xu, Bir Bhanu

As compared to outdoor environments, estimating depth of monocular videos for indoor environments, using self-supervised methods, results in two additional challenges: (i) the depth range of indoor video sequences varies a lot across different frames, making it difficult for the depth network to induce consistent depth cues for training; (ii) the indoor sequences recorded with handheld devices often contain much more rotational motions, which cause difficulties for the pose network to predict accurate relative camera poses.

Depth Prediction Monocular Depth Estimation +1

Learning Local Recurrent Models for Human Mesh Recovery

no code implementations27 Jul 2021 Runze Li, Srikrishna Karanam, Ren Li, Terrence Chen, Bir Bhanu, Ziyan Wu

We conduct a variety of experiments on standard video mesh recovery benchmark datasets such as Human3. 6M, MPI-INF-3DHP, and 3DPW, demonstrating the efficacy of our design of modeling local dynamics as well as establishing state-of-the-art results based on standard evaluation metrics.

3D Human Pose Estimation 3D Human Shape Estimation +1

MonoIndoor: Towards Good Practice of Self-Supervised Monocular Depth Estimation for Indoor Environments

no code implementations ICCV 2021 Pan Ji, Runze Li, Bir Bhanu, Yi Xu

The effectiveness of each module is shown through a carefully conducted ablation study and the demonstration of the state-of-the-art performance on three indoor datasets, \ie, EuRoC, NYUv2, and 7-scenes.

Monocular Depth Estimation Pose Estimation

Risk-Sensitive Deep RL: Variance-Constrained Actor-Critic Provably Finds Globally Optimal Policy

no code implementations28 Dec 2020 Han Zhong, Xun Deng, Ethan X. Fang, Zhuoran Yang, Zhaoran Wang, Runze Li

In particular, we focus on a variance-constrained policy optimization problem where the goal is to find a policy that maximizes the expected value of the long-run average reward, subject to a constraint that the long-run variance of the average reward is upper bounded by a threshold.

reinforcement-learning Reinforcement Learning (RL)

Learning the aerodynamic design of supercritical airfoils through deep reinforcement learning

no code implementations5 Oct 2020 Runze Li, Yufei Zhang, Haixin Chen

The policy is then trained in environments based on surrogate models, of which the mean drag reduction of 200 airfoils can be effectively improved by reinforcement learning.

Computational Engineering, Finance, and Science Data Analysis, Statistics and Probability

Towards Visually Explaining Variational Autoencoders

2 code implementations CVPR 2020 Wenqian Liu, Runze Li, Meng Zheng, Srikrishna Karanam, Ziyan Wu, Bir Bhanu, Richard J. Radke, Octavia Camps

We present methods to generate visual attention from the learned latent space, and also demonstrate such attention explanations serve more than just explaining VAE predictions.

Disentanglement

Model-free Feature Screening and FDR Control with Knockoff Features

no code implementations19 Aug 2019 Wanjun Liu, Yuan Ke, Jingyuan Liu, Runze Li

It can be shown that the proposed two-step approach enjoys both sure screening and FDR control if the pre-specified FDR level $\alpha$ is greater or equal to $1/s$, where $s$ is the number of active features.

On the Feasibility of Distributed Kernel Regression for Big Data

no code implementations5 May 2015 Chen Xu, Yongquan Zhang, Runze Li

Under mild conditions, we show that, with a proper number of segments, DKR leads to an estimator that is generalization consistent to the unknown regression function.

regression valid

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