To Do to enhance the repo

[shanzhenren]

• [x] a centralized script/command to call BOTH baselines and our model variants

• [x] four datasets with unified format (and link to the dataset directory on README)

• [x] enrich the README with motivation/intro of the work, plus the illustration figure

[shanzhenren]

• [x] add some baselines to the result tables

• [ ] elaborate on the centralized script for running temporal & static baselines

• [x] add reference info