# MSMCE: A novel representation module for classification of raw mass spectrometry data

## TL;DR

This paper introduces MSMCE, a new method for classifying raw mass spectrometry data by improving feature representation and classification performance.

## Contribution

The novel MSMCE module models inter-channel dependencies and enhances classification performance through multi-channel embeddings.

## Key findings

- MSMCE improves classification performance on four public datasets.
- The method enhances computational efficiency and training stability.
- Multi-channel embeddings capture structural information better than single-channel approaches.

## Abstract

Mass spectrometry (MS) analysis plays a crucial role in the biomedical field; however, the high dimensionality and complexity of MS data pose significant challenges for feature extraction and classification. Deep learning has become a dominant approach in data analysis, and while some deep learning methods have achieved progress in MS classification, their feature representation capabilities remain limited. Most existing methods rely on single-channel representations, which struggle to effectively capture structural information within MS data. To address these limitations, we propose a Multi-Channel Embedding Representation Module (MSMCE), which focuses on modeling inter-channel dependencies to generate multi-channel representations of raw MS data. Additionally, we implement a feature fusion mechanism by concatenating the initial encoded representation with the multi-channel embeddings along the channel dimension, significantly enhancing the classification performance of subsequent models. Experimental results on four public datasets demonstrate that the proposed MSMCE module not only achieves substantial improvements in classification performance but also enhances computational efficiency and training stability, highlighting its effectiveness in raw MS data classification and its potential for robust application across diverse datasets.