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jlidw / awesome-AI-for-spatial-interpolation-papers

A professional list of Papers on AI for Spatial Interpolation in AI conferences and journals.
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what's the difference between interpolation and imputation？ #1

Open shenzekai opened 3 months ago

shenzekai commented 3 months ago

Hi, I am researching the papers related to interpolation, and your GitHub is very helpful to me. I would like to ask what is the difference between interpolation and imputation? One is the spatial dimension and the other is the temporal dimension? Thank you.

jlidw commented 3 months ago

According to Wiki, “imputation” is the process of replacing missing data with substituted values; "interpolation" is a process of constructing new data points based on known data points. I think this is the reason why we call "time series imputation" and "spatial interpolation": each time series has its own historical recordings, we perform imputation to fill the missing parts; however, for a new location in space, we don't have any historical recordings/observations (no sensor is installed here), so we need to perform interpolation to infer the value of this new point.

Hope this helps.

shenzekai commented 3 months ago

OK, I think this explanation is perfect. BTW, your work SSIN is excellent. I summarized the SIGMOD 2023 papers related to spatial-temporal data and other conferences in Zhihu. Hope they are helpful to you. 时空数据顶会论文总结

jlidw commented 3 months ago

Thanks for your work!

I just found out there is a typo in the SIGMOD 2023 时序&时空数据论文总结, Paper 12 is not mine, lol~

截屏2024-03-17 下午9 07 48
shenzekai commented 3 months ago

Thanks for your correction, this typo has been corrected now.

shenzekai commented 1 month ago

Hi, I found two papers about ST interpolation with codes. Maybe you can add them to your list.

  1. 2024[KBS]Inductive and adaptive graph convolution networks equipped with constraint task for spatial–temporal traffic data kriging [Paper] [Code] IAGCN
  2. 2024[EDBT]Spatial-temporal Forecasting for Regions without Observations [Paper][Code] STSM The second paper is different. It looks like a new question. It not only interpolates value in the past but also forecasts value in the future.