[Time Series] - TS2Vec(Towards Universal Representation of Time Series) 論文筆記
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2022。AAAI。TS2Vec: Towards Universal Representation of Time Series
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- 輕量、運算時間相當快、可輕易取得學習的特徵
- 支援多變量時間序列
- 同時透過不同層級多尺度的特徵比對提供不同層次的語意,提高特徵學習與通用化的能力
- 時序(temporal)、不同實例(instance)
- 但缺乏頻率方面的特徵提取?
- performance
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TS2Vec核心概念
1. 模型架構
2. 語境一致性(Contextual Consistency)
3. 分層對比(Hierarchical Contrasting)
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