no code implementations • 27 Nov 2023 • Shuyu Y Chang, Zahra Ghahremani, Laura Manuel, Mohammad Erfani, Chaopeng Shen, Sagy Cohen, Kimberly Van Meter, Jennifer L Pierce, Ehab A Meselhe, Erfan Goharian
Hydraulic geometry parameters describing river hydrogeomorphic is important for flood forecasting.
no code implementations • 18 Nov 2023 • Savinay Nagendra, Chaopeng Shen, Daniel Kifer
Landslides are a recurring, widespread hazard.
no code implementations • 21 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.
no code implementations • 10 Jan 2023 • Chaopeng Shen, Alison P. Appling, Pierre Gentine, Toshiyuki Bandai, Hoshin Gupta, Alexandre Tartakovsky, Marco Baity-Jesi, Fabrizio Fenicia, Daniel Kifer, Li Li, Xiaofeng Liu, Wei Ren, Yi Zheng, Ciaran J. Harman, Martyn Clark, Matthew Farthing, Dapeng Feng, Praveen Kumar, Doaa Aboelyazeed, Farshid Rahmani, Hylke E. Beck, Tadd Bindas, Dipankar Dwivedi, Kuai Fang, Marvin Höge, Chris Rackauckas, Tirthankar Roy, Chonggang Xu, Binayak Mohanty, Kathryn Lawson
Here we present differentiable geoscientific modeling as a powerful pathway toward dissolving the perceived barrier between them and ushering in a paradigm shift.
1 code implementation • 12 Nov 2022 • Savinay Nagendra, Chaopeng Shen, Daniel Kifer
Given the logit scores produced by the base segmentation model, each pixel is given a pseudo-label that is obtained by optimally thresholding the logit scores in each image patch.
Ranked #1 on Few-Shot Semantic Segmentation on FSS-1000 (5-shot) (mIoU metric)
no code implementations • 28 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.
1 code implementation • 5 Mar 2022 • Xiaofeng Liu, Yalan Song, Chaopeng Shen
We also found the surrogate architecture (whether with both velocity and water surface elevation or velocity only as outputs) does not show significant impact on inversion result.
no code implementations • 4 Mar 2022 • Olukunle O. Owolabi, Kathryn Lawson, Sanhita Sengupta, Yingsi Huang, Lan Wang, Chaopeng Shen, Mila Getmansky Sherman, Deborah A. Sunter
Hydroelectric power (hydropower) is unique in that it can function as both a conventional source of electricity and as backup storage (pumped hydroelectric storage) for providing energy in times of high demand on the grid.
1 code implementation • 20 Dec 2021 • Yalan Song, Chaopeng Shen, Xiaofeng Liu
The new method was evaluated and compared against existing methods based on convolutional neural networks (CNNs), which can only make image-to-image predictions on structured or regular meshes.
1 code implementation • 19 Jan 2021 • Judy P. Che-Castaldo, Rémi Cousin, Stefani Daryanto, Grace Deng, Mei-Ling E. Feng, Rajesh K. Gupta, Dezhi Hong, Ryan M. McGranaghan, Olukunle O. Owolabi, Tianyi Qu, Wei Ren, Toryn L. J. Schafer, Ashutosh Sharma, Chaopeng Shen, Mila Getmansky Sherman, Deborah A. Sunter, Lan Wang, David S. Matteson
We also provide relevant critical risk indicators (CRIs) across diverse domains that may influence electric power grid risks, including climate, ecology, hydrology, finance, space weather, and agriculture.
Applications
1 code implementation • 12 Jan 2021 • Wenyu Ouyang, Kathryn Lawson, Dapeng Feng, Lei Ye, Chi Zhang, Chaopeng Shen
However, dammed basins must be present in the training dataset.
no code implementations • 6 Jan 2021 • Kuai Fang, Daniel Kifer, Kathryn Lawson, Dapeng Feng, Chaopeng Shen
We hypothesize that DL models automatically adjust their internal representations to identify commonalities while also providing sufficient discriminatory information to the model.
1 code implementation • 26 Nov 2020 • Dapeng Feng, Kathryn Lawson, Chaopeng Shen
While long short-term memory (LSTM) models have demonstrated stellar performance with streamflow predictions, there are major risks in applying these models in contiguous regions with no gauges, or predictions in ungauged regions (PUR) problems.
no code implementations • 30 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.
no code implementations • 18 Dec 2019 • Dapeng Feng, Kuai Fang, Chaopeng Shen
DI was most beneficial in regions with high flow autocorrelation: it greatly reduced baseflow bias in groundwater-dominated western basins and also improved peak prediction for basins with dynamical surface water storage, such as the Prairie Potholes or Great Lakes regions.
no code implementations • 10 Jun 2019 • Kuai Fang, Chaopeng Shen, Daniel Kifer
Soil moisture is an important variable that determines floods, vegetation health, agriculture productivity, and land surface feedbacks to the atmosphere, etc.
no code implementations • 6 Dec 2017 • Chaopeng Shen
I argue that DL can help address several major new and old challenges facing research in water sciences such as inter-disciplinarity, data discoverability, hydrologic scaling, equifinality, and needs for parameter regionalization.
no code implementations • 20 Jul 2017 • Kuai Fang, Chaopeng Shen, Daniel Kifer, Xiao Yang
The Soil Moisture Active Passive (SMAP) mission has delivered valuable sensing of surface soil moisture since 2015.