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Zhengxin Zhang

5 accepted papers

2026

HAPO: Training Language Models to Reason Concisely via History-Aware Policy Optimization

AAAI 2026technical

While scaling the length of responses at test-time has been shown to markedly improve the reasoning abilities and performance of large language models (LLMs), it often results in verbose outputs and increases inference cost. Prior approaches for efficient test-time scaling, typically using universal

Cited by 0SourcePDFScholar
2024

Quantized Side Tuning: Fast and Memory-Efficient Tuning of Quantized Large Language Models

ACL 2024long

Finetuning large language models (LLMs) has been empirically effective on a variety of downstream tasks. Existing approaches to finetuning an LLM either focus on parameter-efficient finetuning, which only updates a small number of trainable parameters, or attempt to reduce the memory footprint durin…

2023

Metis: Understanding and Enhancing In-Network Regular Expressions

NeurIPS 2023poster

Regular expressions (REs) offer one-shot solutions for many networking tasks, e.g., network intrusion detection. However, REs purely rely on expert knowledge and cannot utilize labeled data for better accuracy. Today, neural networks (NNs) have shown superior accuracy and flexibility, thanks to thei…

2022

Cycle Consistent Probability Divergences Across Different Spaces

AISTATS 2022poster

Discrepancy measures between probability distributions are at the core of statistical inference and machine learning. In many applications, distributions of interest are supported on different spaces, and yet a meaningful correspondence between data points is desired. Motivated to explicitly encode…

2021

Non-asymptotic Performance Guarantees for Neural Estimation of f-Divergences

AISTATS 2021poster

Statistical distances (SDs), which quantify the dissimilarity between probability distributions, are central to machine learning and statistics. A modern method for estimating such distances from data relies on parametrizing a variational form by a neural network (NN) and optimizing it. These estima…

Cited by 24SourcePDFScholar