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---
license: cc-by-sa-4.0
configs:
- config_name: default
data_files:
- split: train
path: data/train-*
dataset_info:
features:
- name: legacysurvey_object_id
dtype: string
- name: astropt_15m_hsc
list: float32
- name: astropt_15m_legacysurvey
list: float32
- name: astropt_95m_hsc
list: float32
- name: astropt_95m_legacysurvey
list: float32
- name: astropt_850m_hsc
list: float32
- name: astropt_850m_legacysurvey
list: float32
- name: convnext_nano_hsc
list: float32
- name: convnext_nano_legacysurvey
list: float32
- name: convnext_tiny_hsc
list: float32
- name: convnext_tiny_legacysurvey
list: float32
- name: convnext_base_hsc
list: float32
- name: convnext_base_legacysurvey
list: float32
- name: convnext_large_hsc
list: float32
- name: convnext_large_legacysurvey
list: float32
- name: dino_small_hsc
list: float32
- name: dino_small_legacysurvey
list: float32
- name: dino_base_hsc
list: float32
- name: dino_base_legacysurvey
list: float32
- name: dino_large_hsc
list: float32
- name: dino_large_legacysurvey
list: float32
- name: dino_giant_hsc
list: float32
- name: dino_giant_legacysurvey
list: float32
- name: ijepa_huge_hsc
list: float32
- name: ijepa_huge_legacysurvey
list: float32
- name: ijepa_giant_hsc
list: float32
- name: ijepa_giant_legacysurvey
list: float32
- name: vit_base_hsc
list: float32
- name: vit_base_legacysurvey
list: float32
- name: vit_large_hsc
list: float32
- name: vit_large_legacysurvey
list: float32
- name: vit_huge_hsc
list: float32
- name: vit_huge_legacysurvey
list: float32
splits:
- name: train
num_bytes: 13556703431
num_examples: 101725
download_size: 15771223711
dataset_size: 13556703431
---
# Legacy Survey ↔ HSC Embeddings (The Platonic Universe)
Precomputed **cross-survey embeddings** for matched sources in **Legacy Survey** and **HSC**.
Each row is one object with multiple backbone embeddings for **both** surveys (paired by suffixes `_legacysurvey` and `_hsc`).
**Examples of columns (see Viewer for full list):**
- AstroPT: `astropt_15m_hsc`, `astropt_15m_legacysurvey`, `astropt_95m_*`, `astropt_850m_*`
- ConvNeXt: `convnext_nano_*`, `convnext_tiny_*`, `convnext_base_*`, `convnext_large_*`
- DINOv2: `dino_small_*`, `dino_base_*`, `dino_large_*`, `dino_giant_*`
- I-JEPA: `ijepa_huge_*`, `ijepa_giant_*`
- ViT: `vit_base_*`, `vit_large_*`, `vit_huge_*`
- Identifier: `legacysurvey_object_id`
---
## Load in Python
```python
from datasets import load_dataset
import numpy as np
ds = load_dataset("UniverseTBD/legacysurvey_hsc_embeddings", split="train")
print("Columns:", ds.column_names[:10], "...")
row = ds[0]
```
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