Update README.md

README.md

@@ -51,5 +51,5 @@ Note that two captions for the same image do not strictly have the same semantic
       'caption2': 'A man stands on wooden supports and surveys damage.',
     }
     ```
-* Collection strategy: Reading the Flickr30k Captions dataset from [embedding-training-data](https://huggingface.co/datasets/sentence-transformers/embedding-training-data).
+* Collection strategy: Reading the Flickr30k Captions dataset from [embedding-training-data](https://huggingface.co/datasets/sentence-transformers/embedding-training-data), which has lists of duplicate captions. I've considered all adjacent captions as a positive pair, plus the last and first caption. So, e.g. 5 duplicate captions results in 5 duplicate pairs.
 * Deduplified: No