Updated the readme

README.md

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 license: cc-by-nc-sa-4.0
+task_categories:
+- feature-extraction
+language:
+- en
+size_categories:
+- 100K<n<1M
 ---
 
 ## Nordland dataset 
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 * Non-modular SNN: [Spiking Neural Networks for Visual Place Recognition via Weighted Neuronal Assignments (RAL + ICRA2022)](https://arxiv.org/abs/2109.06452) DOI: [10.1109/LRA.2022.3149030](https://doi.org/10.1109/LRA.2022.3149030)
 
 
-The code for our three papers mentioned above is publicly available at: [https://github.com/QVPR/VPRSNN](https://github.com/QVPR/VPRSNN)
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+The code for our three papers mentioned above is publicly available at: [https://github.com/QVPR/VPRSNN](https://github.com/QVPR/VPRSNN)