Enhance dataset card: Add description, links, and task category

README.md

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   data_files:
   - split: train
     path: data/train-*
+task_categories:
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+# GeoBench Dataset for GeoVista
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+The **GeoBench** dataset is a benchmark introduced in the paper [GeoVista: Web-Augmented Agentic Visual Reasoning for Geolocalization](https://huggingface.co/papers/2511.15705).
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+GeoBench is curated to rigorously evaluate the geolocalization ability of agentic models. It comprises photos and panoramas from around the world, as well as a subset of satellite images of different cities. This dataset addresses the demand for high-resolution imagery and the complexities of localization for advanced agentic reasoning, necessitating nuanced visual grounding and web search to validate hypotheses during the reasoning process.
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+- **Project Page:** https://ekonwang.github.io/geo-vista/
+- **Code:** https://github.com/ekonwang/GeoVista