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Jiehui Xu

3 accepted papers

2022

Anomaly Transformer: Time Series Anomaly Detection with Association Discrepancy

ICLR 2022spotlight

Unsupervised detection of anomaly points in time series is a challenging problem, which requires the model to derive a distinguishable criterion. Previous methods tackle the problem mainly through learning pointwise representation or pairwise association, however, neither is sufficient to reason abo…

2022

Flowformer: Linearizing Transformers with Conservation Flows

ICML 2022spotlight

Transformers based on the attention mechanism have achieved impressive success in various areas. However, the attention mechanism has a quadratic complexity, significantly impeding Transformers from dealing with numerous tokens and scaling up to bigger models. Previous methods mainly utilize the sim…

2021

Autoformer: Decomposition Transformers with Auto-Correlation for Long-Term Series Forecasting

NeurIPS 2021poster

Extending the forecasting time is a critical demand for real applications, such as extreme weather early warning and long-term energy consumption planning. This paper studies the long-term forecasting problem of time series. Prior Transformer-based models adopt various self-attention mechanisms to d…