Transformer Multivariate Forecasting: Less is More?


Contents

  1. Abstract
  2. Introduction
  3. PCA+Transformer in TSF


0. Abstract

Inherent complexity of TS datasets

\(\rightarrow\) This paper: focuses on reducing redundant information

  • to elevate forecasting accuracy
  • while optimizing runtime efficiency.


Propose Transformer + Principal Component Analysis (PCA)


1. Introduction

Task : LTSF with MTS


figure2

Trend of Google Scholar’s publications on Transformer techniques since 2017.


Dimension reduction

  • Existing approaches to dimensionality reduction in datasets for transformer models remain insufficient.


Contribution

  1. Present aa benchmark test on transformer-based MTS forecasting with PCA
  2. Proposed framework can significantly enhance LTSF performance
  3. Comprehensive study
    • Detailed and interpretable insights for model transparency,
    • Interpretability and explainability of multivariate analysis


2. PCA+Transformer in TSF

figure2


Updated: