| --- |
| license: mit |
| pretty_name: AstroCLIP Lightweight 30K |
| task_categories: |
| - feature-extraction |
| tags: |
| - astronomy |
| - multimodal |
| - image-spectrum |
| - astroclip |
| configs: |
| - config_name: default |
| data_files: |
| - split: train |
| path: data/train-*.parquet |
| - split: test |
| path: data/test-*.parquet |
| --- |
| |
| # AstroCLIP Lightweight 30K |
|
|
| This repository contains the deterministic 30,000-object subset used by the |
| lightweight AstroCLIP backbone experiments in `AstroCLIP-lightweight`. |
|
|
| ## Dataset structure |
|
|
| The dataset contains two non-overlapping splits: |
|
|
| | Split | Rows | |
| |---|---:| |
| | `train` | 24,000 | |
| | `test` | 6,000 | |
|
|
| Each row contains exactly three fields: |
|
|
| - `image`: a `float32` array with shape `(152, 152, 3)`; |
| - `spectrum`: a `float32` array with shape `(7781, 1)`; |
| - `targetid`: an `int64` astronomical object identifier. |
|
|
| The dataset intentionally does not include a `redshift` field because this is |
| the exact input dataset used by the reported lightweight-model experiments. |
|
|
| ## Construction |
|
|
| The source is the MIT-licensed |
| [`mhsotoudeh/astroclip`](https://huggingface.co/datasets/mhsotoudeh/astroclip) |
| dataset at source revision `9f36fcb2acc304c7b4fd73d452673d82ba9bf1fb`. |
|
|
| Rows were selected deterministically by hashing `seed:targetid` with BLAKE2b |
| (8-byte digest), retaining the lowest scores. The train split uses seed `42` |
| and the test split uses seed `43`. Source train and test partitions were kept |
| separate, and the resulting `targetid` sets do not overlap. |
|
|
| ## Usage |
|
|
| ```python |
| from datasets import load_dataset |
| |
| dataset = load_dataset("Corustella/AstroCLIP-lightweight") |
| print(dataset) |
| ``` |
|
|
| ## Intended use and limitations |
|
|
| This subset is intended for reproducible training, retrieval evaluation, and |
| controlled efficiency comparisons of lightweight AstroCLIP variants. It is a |
| deterministic experimental subset, not a statistically representative sample |
| of all astronomical surveys or galaxy populations. Users requiring redshift |
| labels should obtain them from the appropriately licensed upstream source and |
| join them by `targetid`. |
|
|
| ## Attribution |
|
|
| Please cite the upstream AstroCLIP work and dataset when using this subset: |
|
|
| - [AstroCLIP: Cross-Modal Pre-Training for Astronomical Foundation Models](https://arxiv.org/abs/2310.03024) |
| - [`mhsotoudeh/astroclip`](https://huggingface.co/datasets/mhsotoudeh/astroclip) |
|
|
| The upstream dataset is marked as MIT licensed. This derived subset is |
| published under the same license and retains source attribution. |
|
|
