Cited by 1Time Series Analysis and ForecastingStock Market Forecasting MethodsContext-Aware Activity Recognition Systems

Many-to-Many Prediction for Effective Modeling of Frequent Label Transitions in Time Series

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Katrompas, Alexander, Metsis, Vangelis·2024·Proceedings of the 17th International Conference on PErvasive Technologies Related to Assistive Environments

Abstract

Time-series classification is vital in health monitoring and human activity recognition, as well as in areas such as financial forecasting, process control, and a wide array of forecasting tasks. Traditional time-series models segment data into windows and assign one label per window, often missing label transitions within those windows. This paper presents a novel many-to-many time-series model and post-processing using hybrid recurrent neural networks with attention mechanisms, which more effectively captures label transitions over traditional many-to-one models. Further, unlike typical other many-to-many models, our approach doesn’t require a decoder. Instead, it employs an RNN, generating a label for every input time step. During inference, a weighted voting scheme consolidates overlapping predictions into one label per time step. Experiments show our model remains effective on time-series with sparse label shifts, but particularly excels in detecting frequent transitions. This model is ideal for tasks demanding accurate pinpointing of rapid label changes in time-series data, such as gesture recognition, making it ideal for fast-paced human activity recognition. 1

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  1. Dzmitry Bahdanau, Kyunghyun Cho, and Y. Bengio. 2014. Neural Machine Translation by Jointly Learning to Align and Translate. ArXiv 1409 (09 2014).
  2. Zelda Mariet and Vitaly Kuznetsov. 2019. Foundations of Sequence-to-Sequence Modeling for Time Series. In Proceedings of the Twenty-Second International Conference on Artificial Intelligence and Statistics (Proceedings of Machine Learning Research, Vol. 89), Kamalika Chaudhuri and Masashi Sugiyama (Eds.). PMLR, 408- 417.
  3. Ashish Vaswani, Noam Shazeer, Niki Parmar, Jakob Uszkoreit, Llion Jones, Aidan Gomez, Lukasz Kaiser, and Illia Polosukhin. 2017. Attention Is All You Need. 31st Conference on Neural Information Processing Systems (NIPS 2017) (06 2017).

Authors
Katrompas, A., & Metsis, V.
Affiliations
Texas State University (US)
Venue
Proceedings of the 17th International Conference on PErvasive Technologies Related to Assistive Environments
Publisher
ACM
Published
2024-06-26
Pages
265-272
OpenAlex
W4400037248
Cited by
1
References
27
Citations by year
2025: 1
FWCI
0.38
Type
conference paper
Language
en
Open access
Locations
International Conference on PErvasive Technologies Related to Assistive Environments (PETRA) (publishedVersion)
Topics
  • Physical Sciences › Computer Science › Signal Processing › Time Series Analysis and Forecasting
  • Social Sciences › Decision Sciences › Management Science and Operations Research › Stock Market Forecasting Methods
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Context-Aware Activity Recognition Systems
Keywords
recurrent neural networks, attention mechanism, weighted voting, time series classification, human activity recognition, gesture recognition

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