Zhe Liu

Olap query performance tuning in Spark

2015

OLAP query is an efficient way to gain quick insight into big data. Spark is a fast and general engine for big data processing, which supports interactive OLAP queries. Nevertheless, as a general engine, there …

Spectrum-Guided Adversarial Disparity Learning

2020

It has been a significant challenge to portray intraclass disparity precisely in the area of activity recognition, as it requires a robust representation of the correlation between subject-specific variation for each activity class. In this …

The Metamorphosis: Automatic Detection of Scaling Issues for Mobile Apps

2022

As the bridge between users and software, Graphical User Interface (GUI) is critical to the app accessibility. Scaling up the font or display size of GUI can help improve the visual impact, readability, and usability …

RARE: Robust Masked Graph Autoencoder

2023 · arXiv (Cornell University)

Masked graph autoencoder (MGAE) has emerged as a promising self-supervised graph pre-training (SGP) paradigm due to its simplicity and effectiveness. However, existing efforts perform the mask-then-reconstruct operation in the raw data space as is done …

Forgetting Private Textual Sequences in Language Models Via Leave-One-Out Ensemble

2024

Recent research has shown that language models have a tendency to memorize rare or unique token sequences in the training corpus. After deploying a model, practitioners might be asked to delete any personal information from …

Many Minds, One Path: LLM-Augmented Consensus Decision for Distributed Control in Multi-Agent Collaborative Stable Scenarios

2026 · Proceedings of the AAAI Conference on Artificial Intelligence

Distributed multi-agent systems are increasingly deployed in dynamic and high-stakes environments such as power grids, intelligent traffic systems, and collaborative robotics. In these systems, long-term stability, the ability to maintain coherent and safe system behavior …