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Kai Zhen

10 accepted papers

2025

MaZO: Masked Zeroth-Order Optimization for Multi-Task Fine-Tuning of Large Language Models

EMNLP 2025

Large language models have demonstrated exceptional capabilities across diverse tasks, but their fine-tuning demands significant memory, posing challenges for resource-constrained environments. Zeroth-order (ZO) optimization provides a memory-efficient alternative by eliminating the need for backpro

Cited by 0SourcePDFScholar
2025

QuZO: Quantized Zeroth-Order Fine-Tuning for Large Language Models

EMNLP 2025

Large Language Models (LLMs) are often quantized to lower precision to reduce the memory cost and latency in inference. However, quantization often degrades model performance, thus fine-tuning is required for various downstream tasks. Traditional fine-tuning methods such as stochastic gradient desce

Cited by 0SourcePDFScholar
2025

Saten: Sparse Augmented Tensor Networks for Post-Training Compression of Large Language Models

EMNLP 2025

The efficient implementation of large language models (LLMs) is crucial for deployment on resource-constrained devices. Low-rank tensor compression techniques, such as tensor-train (TT) networks, have been widely studied for over-parameterized neural networks. However, their applications to compress

2025

Wanda++: Pruning Large Language Models via Regional Gradients

ACL 2025finding

Large Language Models (LLMs) pruning seeks to remove unimportant weights for inference speedup with minimal accuracy impact. However, existing methods often suffer from accuracy degradation without full-model sparsity-aware fine-tuning. This paper presents Wanda++, a novel pruning framework that out…

Cited by 0SourcePDFScholar
2024

AdaZeta: Adaptive Zeroth-Order Tensor-Train Adaption for Memory-Efficient Large Language Models Fine-Tuning

EMNLP 2024main

Fine-tuning large language models (LLMs) has achieved remarkable performance across various natural language processing tasks, yet it demands more and more memory as model sizes keep growing. To address this issue, the recently proposed Memory-efficient Zeroth-order (MeZO) methods attempt to fine-tu…

2024

Max-Margin Transducer Loss: Improving Sequence-Discriminative Training Using a Large-Margin Learning Strategy

ICASSP 2024accepted

In this work, we propose a novel sequence-discriminative training criterion for automatic speech recognition (ASR) based on the Conformer Transducer. Inspired by the large-margin classifier framework, we separate the "good" and the "bad" hypotheses in an N-best list produced from a pre-trained trans…

Cited by 0SourceScholar
2021

Sparsification via Compressed Sensing for Automatic Speech Recognition

ICASSP 2021accepted

In order to achieve high accuracy for machine learning (ML) applications, it is essential to employ models with a large number of parameters. Certain applications, such as Automatic Speech Recognition (ASR), however, require real-time interactions with users, hence compelling the model to have as lo…

Cited by 0SourceScholar
2020

A Dual-Staged Context Aggregation Method towards Efficient End-to-End Speech Enhancement

ICASSP 2020accepted

In speech enhancement, an end-to-end deep neural network converts a noisy speech signal to a clean speech directly in the time domain without time-frequency transformation or mask estimation. However, aggregating contextual information from a high-resolution time domain signal with an affordable mod…

Cited by 0SourceScholar
2020

Efficient and Scalable Neural Residual Waveform Coding with Collaborative Quantization

ICASSP 2020accepted

Scalability and efficiency are desired in neural speech codecs, which supports a wide range of bitrates for applications on various devices. We propose a collaborative quantization (CQ) scheme to jointly learn the codebook of LPC coefficients and the corresponding residuals. CQ does not simply shoeh…

Cited by 0SourceScholar