Update README.md

README.md

@@ -14,11 +14,11 @@ VLAC2 is a video-progress benchmark for long-horizon robot manipulation. This re
 
 ## Contents
 
-- `benchmark_json/train/video_progress_benchmark_file.json`
-- `benchmark_json/test_expert_seen/video_progress_benchmark_file.json`
-- `benchmark_json/test_expert_unseen/video_progress_benchmark_file.json`
-- `benchmark_json/test_nonexpert_seen/video_progress_benchmark_file.json`
-- `benchmark_json/test_nonexpert_unseen/video_progress_benchmark_file.json`
+- `benchmark_data/train/video_progress_benchmark_file.json`
+- `benchmark_data/test_expert_seen/video_progress_benchmark_file.json`
+- `benchmark_data/test_expert_unseen/video_progress_benchmark_file.json`
+- `benchmark_data/test_nonexpert_seen/video_progress_benchmark_file.json`
+- `benchmark_data/test_nonexpert_unseen/video_progress_benchmark_file.json`
 - `scripts/extract_vlac2_release_raw_archives.sh`
 - `scripts/extract_vlac2_release_frames.py`
 - `scripts/vlac2_release_common.py`
@@ -40,7 +40,7 @@ python scripts/extract_vlac2_release_frames.py --release-root /path/to/vlac2_rel
 
 If `--output-root` is not specified, extracted frames are written to `/path/to/vlac2_release/_extracted_frames/`, which is created automatically by the script.
 
-3. Use the benchmark JSON files for training or evaluation. Frame paths in the JSONs use the placeholder prefix `__VLAC2_RELEASE_ROOT__`, which should be replaced with the absolute path of the local release root.
+3. Use the benchmark files for training or evaluation. Frame paths in the JSONs use the prefix `__VLAC2_RELEASE_ROOT__/_extracted_frames/...`. Replace `__VLAC2_RELEASE_ROOT__` with the absolute path of the downloaded `VLAC2-Benchmark` directory itself, not with the path to `_extracted_frames/`. For example, if the repository root is `/data/VLAC2-Benchmark`, then `__VLAC2_RELEASE_ROOT__/_extracted_frames/...` becomes `/data/VLAC2-Benchmark/_extracted_frames/...`.
 
 ## Notes