Update dataset card source information

README.md

@@ -18,25 +18,29 @@ viewer: false
 
 # BToks MMEB-train
 
-This dataset repository stores a Lance-format conversion used by the open-source reproduction code for **Bottleneck Tokens for Unified Multimodal Retrieval** (arXiv:2604.11095).
+This dataset repository contains Lance-format converted data used by the open-source reproduction code for **Bottleneck Tokens for Unified Multimodal Retrieval** (arXiv:2604.11095).
 
-The repository is intended to be consumed by the BToks/VLM2Emb training and evaluation scripts. It is not a standalone benchmark definition, and the Hugging Face Dataset Viewer is disabled because the data is stored as Lance tables rather than standard Parquet/JSON splits.
+## Source
+
+Converted from [TIGER-Lab/MMEB-train](https://huggingface.co/datasets/TIGER-Lab/MMEB-train). This repository does not change upstream ownership, licensing, citation requirements, or usage restrictions.
+
+## Format
+
+The data is stored as Lance tables for the BToks/VLM2Emb training and evaluation scripts. The Hugging Face Dataset Viewer is disabled because this repository is not stored as standard Parquet or JSON splits.
 
 ## Usage
 
-Install the project dependencies, then point the corresponding dataset config entry to this Hugging Face dataset ID:
+Use this repository ID in the corresponding dataset config:
 
 ```yaml
 dataset_name: siyrus/BToks-MMEB-train
 ```
 
-The public code repository documents the expected config schema, training presets, and evaluation commands.
-
-## Data Sources and License
+See the public BToks code repository for the config schema, training presets, and evaluation commands: https://github.com/siryuson/BottleneckTokens
 
-The converted records come from upstream public datasets used for multimodal retrieval, visual question answering, document retrieval, or video understanding experiments. This repository does not change the upstream ownership or licensing terms. Users are responsible for checking and following the licenses, citation requirements, and usage restrictions of the original datasets.
+## License and Citation
 
-## Citation
+Users must follow the license, citation requirements, and usage restrictions of the upstream source dataset.
 
 ```bibtex
 @article{sun2026bottlenecktokens,