[!WARNING] ⚠️Update[2026.04.10]:
This demo dataset has been updated to newest version with the following changes:
The parquet file is now a flat column layout, with all features as top-level columns.
Add a sequence feature, rename feature names and update some features.
Participants should refer to the updated demo_1000.parquet and this README.md for the latest schema and data details.
A sample dataset containing 1000 user-item interaction… See the full description on the dataset page:
https://huggingface.co/datasets/KamenRider111/data_sample_1000.
