← Search

Alex Liu

3 accepted papers

2025

ComposableNav: Instruction-Following Navigation in Dynamic Environments via Composable Diffusion

CoRL 2025poster

This paper considers the problem of enabling robots to navigate dynamic environments while following instructions. The challenge lies in the combinatorial nature of instruction specifications: each instruction can include multiple specifications, and the number of possible specification combination…

Cited by 0SourceScholar
2024

Model Predictive Control for Aggressive Driving Over Uneven Terrain

RSS 2024poster

Terrain traversability in unstructured off-road autonomy has traditionally relied on semantic classification, resource-intensive dynamics models, or purely geometry-based methods to predict vehicle-terrain interactions. While inconsequential at low speeds, uneven terrain subjects our full-scale syst…

Cited by 21SourcePDFScholar
2022

Regularized Graph Structure Learning with Semantic Knowledge for Multi-variates Time-Series Forecasting

IJCAI 2022poster

Multivariate time-series forecasting is a critical task for many applications, and graph time-series network is widely studied due to its capability to capture the spatial-temporal correlation simultaneously. However, most existing works focus more on learning with the explicit prior graph structure…