LychSim selected dataset

25,989 images in 5,567 complete intervention groups: outdoor 9,961 images and indoor (including insertion) 16,028 images. Original RGB, geometric outputs, annotations, paired levels, and provenance are preserved.

Complete: all archives and metadata have been uploaded and verified.

The release is stored under lychsim_selected_20261106/. Payload files are losslessly packed into independent Zstandard-compressed tar archives (approximately 8 GiB of original files per shard). All archive members use the original relative paths. Indexes and source checksums are available without extracting the payload.

hf download Lychsim-projects/data --repo-type dataset --local-dir ./lychsim-data
cd ./lychsim-data/lychsim_selected_20261106
sha256sum -c ARCHIVE_SHA256SUMS
for shard in archives/*.tar.zst; do tar --zstd -xf "$shard"; done
sha256sum -c SHA256SUMS

Install zstd and GNU tar before extraction. Reading then starts at frames.jsonl; use groups.jsonl to keep paired intervention levels together. No new train/test split is introduced. Keep linked_sample_cluster_id together when constructing splits.

See the original package README, dataset metadata, and archive manifest. Source bytes, including annotation formats, are unchanged. The operational .build/ directory is excluded as documented by the package. The existing manual access approval and license settings are retained.