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SCFT: A Dual-Domain Orthogonal Representation Framework for Efficient Time Series Forecasting

  • Tianshi Wang
  • , Di Zhang*
  • *Corresponding author for this work
  • Xian Jiaotong-Liverpool University Entrepreneur College

Research output: Chapter in Book or Report/Conference proceeding › Conference Proceeding › peer-review

Abstract

Long-horizon multivariate time series forecasting demands a balance between modeling global frequency structures and capturing local irregular fluctuations. We present SCFT, a forecasting framework centered on a novel Dual-Domain Orthogonal Representation that simultaneously exposes global periodicity and preserves temporal shape fidelity. SCFT integrates two supporting mechanisms: (1) an Adaptive Polynomial Approximator that models complex spectral states within the frequency domain, and (2) a Phase-Preserving Local Enhancer that refines short-term temporal irregularities without distorting global frequency alignment. Orthogonality constraints between domains ensure stable and interpretable subspace learning. Extensive evaluations across multiple benchmarks demonstrate that SCFT achieves competitive predictive accuracy while maintaining superior trend consistency, parameter efficiency, and predictable memory scaling compared to heavy baselines.

Original languageEnglish
Title of host publicationAdvanced Intelligent Computing Technology and Applications - 22nd International Conference on Intelligent Computing, ICIC 2026, Proceedings
EditorsDe-Shuang Huang, Chuanlei Zhang, Wei Chen, Bo Li, Qinhu Zhang, Wenzheng Bao, Yijie Pan, Prashan Premaratne
PublisherSpringer Science and Business Media Deutschland GmbH
Pages261-273
Number of pages13
ISBN (Print)9789819235506
DOIs
Publication statusPublished - 2027
Externally publishedYes
Event22nd International Conference on Intelligent Computing, ICIC 2026 - Toronto, Canada
Duration: 22 Jul 2026 → 26 Jul 2026

Publication series

NameCommunications in Computer and Information Science
Volume3038 CCIS
ISSN (Print)1865-0929
ISSN (Electronic)1865-0937

Conference

Conference22nd International Conference on Intelligent Computing, ICIC 2026
Country/TerritoryCanada
CityToronto
Period22/07/26 → 26/07/26

Keywords

  • Kolmogorov-Arnold networks
  • Lightweight architecture
  • Spectral decomposition
  • Time series forecasting

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