Update README.md

README.md

@@ -66,6 +66,18 @@ In this repo, we release two subsets:
 
 This dataset follows the ESPnet OWSM data format as described in [ESPnet `s2t1` recipe](https://github.com/espnet/espnet/tree/master/egs2/TEMPLATE/s2t1).
 
+### Structure
+
+Each subset contains the following files:
+
+- `text`: text transcriptions with utterance-level timestamps: `uttid <language><asr><start_time1> sentence1<end_time1><start_time2> sentence2<end_time2>...`
+- `text.ctc`: text transcriptions without timestamps: `uttid sentence1 sentence2 ...`
+- `text.prev`: text transcriptions of the previous sentence in the same recording without timestamps: `uttid previous_sentences`
+- `wav.scp`: paths to audio files: `uttid audio_path`. The audio files are saved in Kaldi `ark` format. `kaldiio` can be used to read the audio array and sample rate.
+
+Utterance IDs follow this format: `<recording_id>_<start_time>_<end_time>_<language>_asr`, where `<recording_id>` is the original ID in [YODAS2](https://huggingface.co/datasets/espnet/yodas2).
+Therefore, this dataset can be mapped to the original dataset if needed.
+
 ---
 
 ## OWSM v4 Results