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Welcome to My GitHub. 👋

I'm YoungDon Choi, a principal researcher at K-water AI research Lab ( https://github.com/Kwater-AILab) . I have worked at K-water (https://www.kwater.or.kr/eng/about/sub02/kwaterPage.do?s_mid=1099) since 2003 with many experiences such as dam operation, water resources survey and planning, water technology strategy, and water information system. Currently, I'm working at K-water AI research Lab to apply AI in water resources fields.

I did my PhD from 2017 to 2021 at the UVA Hydroinformatics research group (https://uvahydroinformatics.org/team/) in University of Virginia (https://www.virginia.edu/). This is my Dissertation (https://doi.org/10.18130/g9tg-0c69), google scholar(https://scholar.google.com/citations?user=VCyCE5QAAAAJ&hl=en) and Resume(https://github.com/DavidChoi76/profile/blob/main/YD_Choi_17June2022.pdf)

These are my current research. 🤓 Focusing 🤔

  1. 🔭 Application of neuralhydrology and other AI technologies for upstream and downstream analysis for dam operation
  1. 🌱 Long-Term Water Demand Forecasting

  2. 👯 Satellite Rainfall Distribution using Machine Learning

  3. 🔭 Urban Inundation Forecasting using Machine Learning as Surrogate Model

  4. 🌱 Application of NeRF and 3DGS in Water Infrastructures

  5. 👯 Drought Quantification using Social data such as Newspapers

Study for Deeper Understanding. 🤓 Focusing 🤔

  1. Differentiable Modeling

Study HydroMT. 🤓 Focusing 🤔

  1. hydromt: https://github.com/DavidChoi76/hydromt
  2. hydromt_wflow: https://github.com/DavidChoi76/hydromt_wflow
  3. hydromt_delwaq: https://github.com/DavidChoi76/hydromt_delwaq
  4. hydromt_sfincs: https://github.com/DavidChoi76/hydromt_sfincs
  5. hydromt_fiat: https://github.com/DavidChoi76/hydromt_fiat
  6. hydromt_delft3dfm: https://github.com/DavidChoi76/hydromt_delft3dfm

YoungDon Choi's Projects

largescalenerfpytorch icon largescalenerfpytorch

1. Non-official implementation of Block-NeRF and Mega-NeRF in Pytorch. 2. Train your large-scale NeRF in the wild. 3. Weekly classified NeRF literature.

leafmap icon leafmap

A Python package for interactive mapping and geospatial analysis with minimal coding in a Jupyter environment

learning-resources icon learning-resources

Collection of resources recommended by community members for learning various python programming topics.

ludwig icon ludwig

Data-centric declarative deep learning framework

master icon master

A machine learning course using Python, Jupyter Notebooks, and OpenML

mit-deep-learning icon mit-deep-learning

Tutorials, assignments, and competitions for MIT Deep Learning related courses.

ml4floods icon ml4floods

An ecosystem of data, models and code pipelines to tackle flooding with ML

mts-lstm icon mts-lstm

Rainfall-Runoff Prediction at Multiple Timescales with a Single Long Short-Term Memory Network

multimodal-flood-tweet-classification icon multimodal-flood-tweet-classification

While text classification can classify tweets, assessing whether a tweet is related to an ongoing flood event or not based on its text remains difficult. Inclusion of contextual hydrological information could improve the performance of such algorithms. In this study, we designed a multilingual multimodal neural network that can effectively use both textual and hydrological information. The classification data was obtained from the Twitter-streaming API using flood-related keywords in English, French, Spanish and Indonesian. Subsequently, hydrological information was extracted from a global precipitation dataset based on the tweet’s timestamp and locations mentioned in its text. We performed three experiments analyzing precision, recall and F1-scores while comparing a network that uses hydrological information against a network that does not. Results showed that F1-scores improved significantly across all experiments. Most notably, when optimizing for precision the network with hydrological information could achieve a precision of 0.91 while the network without hydrological information failed to effectively optimize. Moreover, this study shows that including hydrological information can assist in the translation of the classification algorithm to unseen languages. Tweets filtered using this network can be used to more effectively organize disaster response, validate and calibrate flood risk models, and task satellites among other applications.

nasa_gpm icon nasa_gpm

Scripts for get precipitation from arthurhou.pps.eosdis.nasa.gov

nerf icon nerf

Code release for NeRF (Neural Radiance Fields)

nerf-pytorch icon nerf-pytorch

A PyTorch implementation of NeRF (Neural Radiance Fields) that reproduces the results.

neuralhydrology icon neuralhydrology

Python library to train neural networks with a strong focus on hydrological applications.

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