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Zhaoxian Wu

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#machine learning Preprint Oct 2026

Robust Parameter-Efficient LLM Adaptation on Analog Hardware

Analog in-memory computing is a promising platform for on-device execution of large language models because it performs matrix--vector multiplications (MVMs) in memory and in parallel, reducing data movement. However, limited digital-to-analog converter precision, input noise, and finite conductance states can degrade...

Jin-Dan Li, Zhao-Xian Wu, Tian-Yi Chen · 0 citations
#machine learning Preprint Sep 2026

Making Analog Training Scale: Co-Designing Mapping, Optimizer, and Converters

Analog in-memory computing (AIMC) offers an alternative for model training by executing matrix operations directly where weights are stored. However, scaling AIMC to train modern deep models remains an open challenge due to severe hardware non-idealities, including physical weights with finite dynamic range and write g...

Zhao-Xian Wu, Tayfun Gokmen, Omobayode I. Fagbohungbe et al. · 1 citation
#machine learning Preprint Sep 2026

The Price of Locality: Why Forward-Forward Underperforms Backpropagation?

The Forward-Forward Algorithm (FFA) replaces backpropagation (BP) with layer-wise local contrastive objectives, eliminating the backward pass and the need to retain intermediate activations, yet suffers a persistent performance gap with BP that worsens with depth. This paper diagnoses two structural failure modes: an o...

Zhao-Xian Wu, Hai-Chuan Liu, Tian-Yi Chen · 0 citations
Preprint Jul 2026

Optimization under Persistent State-Dependent Bias: Gradient-based Method and Complexity Analysis

This paper studies the convergence of stochastic gradient descent when the implemented updates are subject to a persistent and state-dependent bias, in which the desired update is scaled by response functions component-wise, and proposes a gradient-based algorithm, termed Residual Learning.

Zhaoxian Wu, Quan Xiao, Tayfun Gokmen et al. · 0 citations

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