Search Results for author: Jiangtao Liu

Found 5 papers, 0 papers with code

Probing the limit of hydrologic predictability with the Transformer network

no code implementations21 Jun 2023 Jiangtao Liu, Yuchen Bian, Chaopeng Shen

While the Transformer results are not higher than current state-of-the-art, we still learned some valuable lessons: (1) the vanilla Transformer architecture is not suitable for hydrologic modeling; (2) the proposed recurrence-free modification can improve Transformer performance so future work can continue to test more of such modifications; and (3) the prediction limits on the dataset should be close to the current state-of-the-art model.

Practical Frequency-Hopping MIMO Joint Radar Communications: Design and Experiment

no code implementations27 Jan 2023 Jiangtao Liu, Kai Wu, Tao Su, J. Andrew Zhang

Joint radar and communications (JRC) can realize two radio frequency (RF) functions using one set of resources, greatly saving hardware, energy and spectrum for wireless systems needing both functions.

Differentiable, learnable, regionalized process-based models with physical outputs can approach state-of-the-art hydrologic prediction accuracy

no code implementations28 Mar 2022 Dapeng Feng, Jiangtao Liu, Kathryn Lawson, Chaopeng Shen

Without using an ensemble or post-processor, {\delta} models can obtain a median Nash Sutcliffe efficiency of 0. 732 for 671 basins across the USA for the Daymet forcing dataset, compared to 0. 748 from a state-of-the-art LSTM model with the same setup.

Management

From calibration to parameter learning: Harnessing the scaling effects of big data in geoscientific modeling

no code implementations30 Jul 2020 Wen-Ping Tsai, Dapeng Feng, Ming Pan, Hylke Beck, Kathryn Lawson, Yuan Yang, Jiangtao Liu, Chaopeng Shen

The behaviors and skills of models in many geosciences (e. g., hydrology and ecosystem sciences) strongly depend on spatially-varying parameters that need calibration.

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