Add task category, language metadata, link to paper, and dataset description

README.md

@@ -34,4 +34,10 @@ configs:
   data_files:
   - split: train
     path: data/train-*
+language:
+- en
+task_categories:
+- text-ranking
 ---
+
+This dataset is used in the paper [Fixing Data That Hurts Performance: Cascading LLMs to Relabel Hard Negatives for Robust Information Retrieval](https://huggingface.co/papers/2505.16967). It contains query-passage pairs, including positive and negative passages, used for training robust retrieval and reranker models. The dataset was created by identifying and relabeling hard negatives in existing retrieval datasets using cascading LLM prompts.