Add dataset card and metadata for Paper Circle

Hi! I'm Niels from the Hugging Face community science team.

I've noticed this dataset repository is currently missing a README. This PR adds a dataset card to provide more information about the Paper Circle project, including links to the official paper, project website, and source code, as well as metadata tags to help with discoverability on the Hub.

README.md

@@ -0,0 +1,36 @@
+---
+license: mit
+task_categories:
+- other
+---
+
+# Paper Circle Database
+
+This repository contains data associated with [Paper Circle: An Open-source Multi-agent Research Discovery and Analysis Framework](https://huggingface.co/papers/2604.06170).
+
+[Project Page](https://papercircle.vercel.app/) | [GitHub](https://github.com/MAXNORM8650/papercircle) | [Live Demo](https://papercircle.vercel.app)
+
+## Overview
+
+Paper Circle is a multi-agent research discovery and analysis system designed to reduce the effort required to find, assess, organize, and understand academic literature. The system comprises two complementary pipelines:
+
+1.  **Discovery Pipeline**: Integrates offline and online retrieval from multiple sources (arXiv, Scopus, IEEE), multi-criteria scoring, and diversity-aware ranking.
+2.  **Analysis Pipeline**: Transforms individual papers into structured knowledge graphs with nodes for concepts, methods, experiments, and figures, enabling graph-aware question answering.
+
+The framework produces reproducible outputs in various formats including JSON, CSV, BibTeX, Markdown, and HTML at each agent step.
+
+## Citation
+
+If you find PaperCircle useful in your research, please cite the paper:
+
+```bibtex
+@misc{kumar2026papercircleopensourcemultiagent,
+      title={Paper Circle: An Open-source Multi-agent Research Discovery and Analysis Framework}, 
+      author={Komal Kumar and Aman Chadha and Salman Khan and Fahad Shahbaz Khan and Hisham Cholakkal},
+      year={2026},
+      eprint={2604.06170},
+      archivePrefix={arXiv},
+      primaryClass={cs.CL},
+      url={https://arxiv.org/abs/2604.06170}, 
+}
+```