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Zhiqiang Zhao

3 accepted papers

2025

Enhancing Character-Level Understanding in LLMs through Token Internal Structure Learning

ACL 2025long

Tokenization methods like Byte-Pair Encoding (BPE) enhance computational efficiency in large language models (LLMs) but often obscure internal character structures within tokens. This limitation hinders LLMs’ ability to predict precise character positions, which is crucial in tasks like Chinese Spel…

2021

SPADE: A Spectral Method for Black-Box Adversarial Robustness Evaluation

ICML 2021spotlight

A black-box spectral method is introduced for evaluating the adversarial robustness of a given machine learning (ML) model. Our approach, named SPADE, exploits bijective distance mapping between the input/output graphs constructed for approximating the manifolds corresponding to the input/output dat…

2020

GraphZoom: A Multi-level Spectral Approach for Accurate and Scalable Graph Embedding

ICLR 2020talk

Graph embedding techniques have been increasingly deployed in a multitude of different applications that involve learning on non-Euclidean data. However, existing graph embedding models either fail to incorporate node attribute information during training or suffer from node attribute noise, which c…

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