wavelet transform

2 items

RESEARCHarXiv CS.CL·4/24/2026

DWTSumm: Discrete Wavelet Transform for Document Summarization

This research proposes a Discrete Wavelet Transform (DWT)-based framework to enhance document summarization, particularly for long, domain-specific texts where LLMs struggle. The method creates compact representations that improve semantic similarity, grounding, and factual consistency compared to a GPT-4o baseline.

LLMs wavelet transform NLP Document Summarization

RESEARCHarXiv CS.LG·8d ago

Functional MRI Time Series Generation via Wavelet-Based Image Transform and Spectral Flow Matching for Brain Disorder Identification

The paper introduces Dual-Spectral Flow Matching (DSFM), a novel fMRI generative framework that cascades dual frequency representation of BOLD signals with spectral flow matching. This method aims to synthesize high-fidelity fMRI time series to overcome limitations in data availability for brain disorder identification, by replicating complex spatiotemporal dynamics.

fMRI brain disorders generative models wavelet transform