Update README.md

README.md

@@ -6,18 +6,39 @@ We release the raw passages, embeddings, and index of MassiveDS.
 
 Website: https://retrievalscaling.github.io
 
+## Versions
 We release two versions of MassiveDS:
 1. [MassiveDS-1.4T](https://huggingface.co/datasets/rulins/MassiveDS-1.4T), which contains 1.4T tokens in the datastore.
 2. [MassiveDS-140B](https://huggingface.co/datasets/rulins/MassiveDS-140B), which is a subsampled version containing 140B tokens in the datastore.
 
-File structure:
+**Note**: 
+
+* Due to large data volume, **we are still uploading the data for MassiveDS-1.4T** (ETA: July 31).
+* MassiveDS-140B is ready to go. Please try our 10% subsampled version first!
+* Code support to run with MassiveDS is in https://github.com/RulinShao/retrieval-scaling.
+
+## File structure
 * `raw_data`: plain data in JSONL files.
 * `passages`: chunked raw passages with passage IDs. Each passage is chunked to have no more than 256 words.
 * `embeddings`: embeddings of the passages encoded with Contriever-MSMACRO.
 * `index`: flat index built with embeddings.
 
-**Note**: 
+## Download
+We recommend using Git LFS to download large files. We provide an example script below.
+
+First, clone the Git history only to start working with it.
+```bash
+git clone --filter=blob:none https://huggingface.co/datasets/rulins/MassiveDS-1.4T
+cd MassiveDS-1.4T/
+```
+(Optionally) Specify the directory that you want to partially download, e.g., the `embeddings` only. Skip this step if you want to download everything.
+```bash
+git sparse-checkout init --cone
+git sparse-checkout set embeddings
+```
+Finally, pull the data.
+```bash
+git lfs install
+git lfs pull
+```
 
-* Due to large data volume, **we are still uploading the data for MassiveDS-1.4T** (ETA: July 31).
-* MassiveDS-140B is ready to go. Please try our 10% subsampled version first!
-* Code support to run with MassiveDS is in https://github.com/RulinShao/retrieval-scaling.