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GENERATION_NOTES.py

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+# Synthetic test fixture generated for Hugging Face ImageFolder.
+# Every image is deterministic, 128x128, and stored as lossless WebP.
+# The numeric badge in each image is its sample index.

README.md

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 ---
 license: cc0-1.0
+task_categories:
+- image-classification
+tags:
+- image
+- synthetic
+- imagefolder
+size_categories:
+- n<1K
+configs:
+- config_name: full
+  default: true
+  metadata_filenames:
+  - full_train.csv
+  - full_val.csv
+  - full_test.csv
+  data_files:
+  - split: train
+    path:
+    - images/*.webp
+    - full_train.csv
+  - split: validation
+    path:
+    - images/*.webp
+    - full_val.csv
+  - split: test
+    path:
+    - images/*.webp
+    - full_test.csv
+- config_name: core
+  metadata_filenames:
+  - core_train.csv
+  - core_val.csv
+  - core_test.csv
+  data_files:
+  - split: train
+    path:
+    - images/*.webp
+    - core_train.csv
+  - split: validation
+    path:
+    - images/*.webp
+    - core_val.csv
+  - split: test
+    path:
+    - images/*.webp
+    - core_test.csv
 ---
+
+# Tiny overlapping ImageFolder demo
+
+A tiny synthetic repository for testing Hugging Face Dataset Viewer.
+
+- 12 lossless WebP images, each exactly 128×128.
+- `full`: 8 train, 2 validation, 2 test.
+- `core`: 4 train, 1 validation, 1 test.
+- `core` is a subset of `full`.
+- Images exist once in `images/`.
+- `manifest.csv` is the canonical manifest.
+- `splits/` contains lightweight source indices.
+- Root `full_*.csv` and `core_*.csv` are materialized metadata files used by ImageFolder.
+
+## Expected Viewer
+
+The Viewer should show:
+
+- subsets: `full`, `core`
+- splits: `train`, `validation`, `test`
+- an `image` column with thumbnails
+- metadata such as `shape`, `background`, and `caption`
+
+## Load
+
+```python
+from datasets import load_dataset
+
+full = load_dataset("YOUR_USERNAME/YOUR_DATASET", "full")
+core = load_dataset("YOUR_USERNAME/YOUR_DATASET", "core")
+```
+
+## Upload
+
+Run from this directory:
+
+```bash
+pip install -U huggingface_hub
+hf auth login
+hf upload YOUR_USERNAME/YOUR_DATASET . . --repo-type=dataset
+```

VALIDATION.json

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+{
+  "images": 12,
+  "image_size": [
+    128,
+    128
+  ],
+  "format": "WebP lossless",
+  "image_feature_detected": true,
+  "configs": {
+    "full": {
+      "train": 8,
+      "validation": 2,
+      "test": 2
+    },
+    "core": {
+      "train": 4,
+      "validation": 1,
+      "test": 1
+    }
+  }
+}

core_test.csv

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+file_name,sample_id,shape,background,has_stripes,is_core,subset,split,caption
+images/sample_10.webp,synthetic-10,square,sky,1,1,core,test,A square on a sky background with diagonal stripes.

core_train.csv

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+file_name,sample_id,shape,background,has_stripes,is_core,subset,split,caption
+images/sample_00.webp,synthetic-00,circle,coral,1,1,core,train,A circle on a coral background with diagonal stripes.
+images/sample_01.webp,synthetic-01,square,mint,0,1,core,train,A square on a mint background.
+images/sample_03.webp,synthetic-03,circle,sand,0,1,core,train,A circle on a sand background.
+images/sample_04.webp,synthetic-04,square,coral,1,1,core,train,A square on a coral background with diagonal stripes.

core_val.csv

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+file_name,sample_id,shape,background,has_stripes,is_core,subset,split,caption
+images/sample_08.webp,synthetic-08,triangle,coral,1,1,core,validation,A triangle on a coral background with diagonal stripes.

full_test.csv

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+file_name,sample_id,shape,background,has_stripes,is_core,subset,split,caption
+images/sample_10.webp,synthetic-10,square,sky,1,1,full,test,A square on a sky background with diagonal stripes.
+images/sample_11.webp,synthetic-11,triangle,sand,0,0,full,test,A triangle on a sand background.

full_train.csv

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+file_name,sample_id,shape,background,has_stripes,is_core,subset,split,caption
+images/sample_00.webp,synthetic-00,circle,coral,1,1,full,train,A circle on a coral background with diagonal stripes.
+images/sample_01.webp,synthetic-01,square,mint,0,1,full,train,A square on a mint background.
+images/sample_02.webp,synthetic-02,triangle,sky,1,0,full,train,A triangle on a sky background with diagonal stripes.
+images/sample_03.webp,synthetic-03,circle,sand,0,1,full,train,A circle on a sand background.
+images/sample_04.webp,synthetic-04,square,coral,1,1,full,train,A square on a coral background with diagonal stripes.
+images/sample_05.webp,synthetic-05,triangle,mint,0,0,full,train,A triangle on a mint background.
+images/sample_06.webp,synthetic-06,circle,sky,1,0,full,train,A circle on a sky background with diagonal stripes.
+images/sample_07.webp,synthetic-07,square,sand,0,0,full,train,A square on a sand background.

full_val.csv

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+file_name,sample_id,shape,background,has_stripes,is_core,subset,split,caption
+images/sample_08.webp,synthetic-08,triangle,coral,1,1,full,validation,A triangle on a coral background with diagonal stripes.
+images/sample_09.webp,synthetic-09,circle,mint,0,0,full,validation,A circle on a mint background.

manifest.csv

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+image_path,sample_id,shape,background,has_stripes,is_core,caption
+sample_00.webp,synthetic-00,circle,coral,1,1,A circle on a coral background with diagonal stripes.
+sample_01.webp,synthetic-01,square,mint,0,1,A square on a mint background.
+sample_02.webp,synthetic-02,triangle,sky,1,0,A triangle on a sky background with diagonal stripes.
+sample_03.webp,synthetic-03,circle,sand,0,1,A circle on a sand background.
+sample_04.webp,synthetic-04,square,coral,1,1,A square on a coral background with diagonal stripes.
+sample_05.webp,synthetic-05,triangle,mint,0,0,A triangle on a mint background.
+sample_06.webp,synthetic-06,circle,sky,1,0,A circle on a sky background with diagonal stripes.
+sample_07.webp,synthetic-07,square,sand,0,0,A square on a sand background.
+sample_08.webp,synthetic-08,triangle,coral,1,1,A triangle on a coral background with diagonal stripes.
+sample_09.webp,synthetic-09,circle,mint,0,0,A circle on a mint background.
+sample_10.webp,synthetic-10,square,sky,1,1,A square on a sky background with diagonal stripes.
+sample_11.webp,synthetic-11,triangle,sand,0,0,A triangle on a sand background.

splits/core/test.csv

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+image_path
+sample_10.webp

splits/core/train.csv

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+image_path
+sample_00.webp
+sample_01.webp
+sample_03.webp
+sample_04.webp

splits/core/val.csv

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+image_path
+sample_08.webp

splits/full/test.csv

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+image_path
+sample_10.webp
+sample_11.webp

splits/full/train.csv

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+image_path
+sample_00.webp
+sample_01.webp
+sample_02.webp
+sample_03.webp
+sample_04.webp
+sample_05.webp
+sample_06.webp
+sample_07.webp

splits/full/val.csv

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+image_path
+sample_08.webp
+sample_09.webp