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| license: apache-2.0 |
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| # **NICO++ DG Benchmark Subset (Unofficial)** |
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| ## Dataset Summary |
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| This is a **non-official subset** of the [NICO++ dataset](https://arxiv.org/abs/2204.08040), designed for **Domain Generalization (DG)** evaluation. |
| We select **20 categories** across **6 domains**. |
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| The dataset can be used to benchmark algorithms for **domain generalization, domain adaptation, and robustness testing**. |
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| ⚠️ **Note:** This dataset is **not the official release of NICO++**, but a re-organized subset curated for research purposes. |
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| ## Supported Tasks and Leaderboards |
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| * **Domain Generalization (DG)** |
| * **Out-of-Distribution (OOD) Robustness** |
| * **Representation Learning with Multiple Contexts** |
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| ## Languages |
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| * Images contain natural objects and scenes; no text annotations. |
| * Labels are in **English**. |
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| ## Dataset Structure |
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| ### Data Fields |
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| Each sample contains: |
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| * `image`: the input image (RGB) |
| * `label`: the class label (integer) |
| * `category`: the semantic category (string, one of 20) |
| * `domain`: the environment/domain (string, one of 6) |
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| ### Domains |
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| We follow the DG benchmark setup: |
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| ```python |
| "domains" = ['autumn', 'dim', 'grass', 'outdoor', 'rock', 'water'] |
| ``` |
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| ### Categories |
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| The selected 20 categories are: |
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| ```python |
| "categories" = [ |
| 'kangaroo', 'dolphin', 'sailboat', 'pumpkin','gun','sheep','tent','mailbox','cactus','car', |
| 'spider','tortoise','fox','lion','elephant','racket','umbrella','crab','giraffe','chair' |
| ] |
| ``` |
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| ## Data Splits |
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| The dataset is split into domains rather than standard train/val/test. |
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| * Researchers may adopt **leave-one-domain-out** DG evaluation, where training uses 5 domains and testing uses the held-out one. |
| * Example: Train on {autumn, dim, grass, outdoor, rock}, Test on {water}. |
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