Add dataset card and metadata for Thalia (#1)

- Add dataset card and metadata for Thalia (eff4943832678374250ae3796ec33fc8f1b124e8)


Co-authored-by: Niels Rogge <[email protected]>

README.md

@@ -0,0 +1,61 @@
+---
+language:
+- en
+task_categories:
+- image-classification
+- image-segmentation
+pretty_name: Thalia
+tags:
+- earth-science
+- remote-sensing
+- volcano-monitoring
+- insar
+- multi-modal
+---
+
+# Thalia: A Global, Multi-Modal Dataset for Volcanic Activity Monitoring
+
+[**Paper**](https://huggingface.co/papers/2505.17782) | [**GitHub**](https://github.com/Orion-AI-Lab/Thalia) | [**Interactive Demo (Colab)**](https://colab.research.google.com/drive/1NeVtXEqrAawe0ICw1prMJSuFdHPHOqlg)
+
+Thalia is a global, multi-modal dataset for volcanic activity monitoring through Satellite-based Interferometric Synthetic Aperture Radar (InSAR) imagery. Building upon the Hephaestus dataset, Thalia provides higher-resolution, multi-source, and multi-temporal data in a machine-learning-ready format.
+
+## Dataset Overview
+
+Thalia consists of 38 spatiotemporal datacubes covering 7 years of volcanic activity. It integrates:
+- **Georeferenced InSAR imagery**: 100m Ground Sample Distance (GSD) with physically interpretable pixel values.
+- **Topographic Data**: Digital Elevation Model (DEM).
+- **Atmospheric Variables**: Data used to account for signal delays that can mimic ground deformation.
+- **Rich Annotations**: Includes expert labels for deformation type (sill, dyke, mogi, spheroid, earthquake), intensity level (low, medium, high), and volcanic activity phase (rest, unrest, rebound).
+- **Text Descriptions**: Descriptive text for each sample, enabling language-based modeling.
+
+## Tasks & Benchmark
+
+Thalia supports two primary computer vision tasks for both single-image and time-series inputs:
+
+### Image Classification
+Evaluated using architectures such as:
+- ResNet, MobileNet v3, EfficientNet v2, ConvNeXt, and ViT.
+
+### Semantic Segmentation
+Evaluated using:
+- DeepLab v3, UNet, and SegFormer.
+
+## Data Split
+
+The dataset follows a temporal split to ensure robust evaluation:
+- **Training**: 01/2014 – 05/2019
+- **Validation**: 06/2019 – 12/2019
+- **Testing**: 01/2020 – 12/2021
+
+## Citation
+
+If you use this dataset in your research, please cite the following paper:
+
+```bibtex
+@article{papadopoulos2025thalia,
+  title={Thalia: A Global, Multi-Modal Dataset for Volcanic Activity Monitoring},
+  author={Papadopoulos, Nikolas and Bountos, Nikolaos Ioannis and Sdraka, Maria and Karavias, Andreas and Papoutsis, Ioannis},
+  journal={arXiv preprint arXiv:2505.17782},
+  year={2025}
+}
+```