Xiaohong Guan

Hand-Interactive Behavior Analysis for User Authentication Systems with Wrist-Worn Devices

2018

The growing trend of using wearable devices for context-aware computing and pervasive sensing systems has raised its potentials for quick and reliable authentication techniques. We collect users' writing actions with their wrist-worn devices and discover …

Meta Reinforcement Learning with Task Embedding and Shared Policy

2019 · arXiv (Cornell University)

Despite significant progress, deep reinforcement learning (RL) suffers from data-inefficiency and limited generalization. Recent efforts apply meta-learning to learn a meta-learner from a set of RL tasks such that a novel but related task could …

Learning by Sampling and Compressing: Efficient Graph Representation Learning with Extremely Limited Annotations

2020 · arXiv (Cornell University)

Graph convolution network (GCN) attracts intensive research interest with broad applications. While existing work mainly focused on designing novel GCN architectures for better performance, few of them studied a practical yet challenging problem: How to …

Accelerating Level-Value Adjustment for the Polyak Stepsize

2023 · arXiv (Cornell University)

The Polyak stepsize has been widely used in subgradient methods for non-smooth convex optimization. However, calculating the stepsize requires the optimal value, which is generally unknown. Therefore, dynamic estimations of the optimal value are usually …