将 Columbia 划分改为 full 并说明预处理来源

README.md

@@ -41,28 +41,30 @@ dataset_info:
   - name: has_mask
     dtype: bool
   splits:
-  - name: test
+  - name: full
     num_examples: 363
 configs:
 - config_name: columbia
   default: true
   data_files:
-  - split: test
+  - split: full
     path:
-    - columbia/parquet/test-00000-of-00001.parquet
+    - columbia/parquet/full-00000-of-00001.parquet
 ---
 
 # Enhanced Parquet Edition: Columbia Uncompressed Image Splicing Detection Evaluation Dataset (ForgeryVCR 832x832)
 
 This repository packages the Columbia evaluation assets released with [ForgeryVCR](https://huggingface.co/datasets/ForgeryVCR-Team/ForgeryVCR/tree/main/datasets/test) into a Hugging Face Parquet configuration. It contains **363 images**: 183 real and 180 spliced images, with original supplied PNG bytes, available masks, and per-sample metadata embedded in Parquet.
 
-This is the **832 × 832 preprocessed version supplied by ForgeryVCR**.
+This is the **832 × 832 preprocessed version supplied by ForgeryVCR**, preserving its PNG images and grayscale masks. The original Columbia release uses native-resolution TIFF/BMP images and color-coded edgemasks.
+
+The original Columbia dataset does not publish a fixed train/validation/test partition. The `full` split contains all 363 images supplied in the two ForgeryVCR archives. Their upstream location under `datasets/test` records their use in the ForgeryVCR evaluation workflow.
 
 ## Subsets
 
 | Config | Split | Rows | Image size | Pixel masks | Parquet files |
 | --- | --- | ---: | --- | --- | ---: |
-| `columbia` | `test` | 363 | 832 × 832 | 180 spliced images | 1 |
+| `columbia` | `full` | 363 | 832 × 832 | 180 spliced images | 1 |
 
 ## Columns
 
@@ -72,7 +74,7 @@ This is the **832 × 832 preprocessed version supplied by ForgeryVCR**.
 - `manipulation`: `real` or `splice`.
 - `sample_id`, `source_image_path`: the image path relative to the extracted release directory.
 - `source_mask_path`: the supplied mask path relative to the extracted release directory, or `null`.
-- `source_split`: `test`.
+- `source_split`: `test`, preserved from the upstream ForgeryVCR evaluation directory; this is not an official Columbia partition.
 - `filename_source_id`: the original filename prefix before `_sub_`.
 - `width`, `height`: supplied image dimensions in pixels.
 - `has_mask`: whether a pixel annotation is supplied.

columbia/stats.json

@@ -1,7 +1,7 @@
 {
   "release": "Columbia (ForgeryVCR 832x832)",
   "splits": {
-    "test": {
+    "full": {
       "samples": 363,
       "categories": {
         "real": 183,
@@ -278,7 +278,7 @@
       },
       "parquet_files": [
         {
-          "path": "columbia/parquet/test-00000-of-00001.parquet",
+          "path": "columbia/parquet/full-00000-of-00001.parquet",
           "rows": 363,
           "row_groups": 4,
           "bytes": 241356919
@@ -288,5 +288,7 @@
       "embedded_image_bytes": 241472041,
       "embedded_mask_bytes": 1228718
     }
-  }
+  },
+  "split_origin": "No fixed official train/validation/test partition; full contains all images supplied in the two ForgeryVCR archives.",
+  "upstream_split": "test"
 }

inventory.json

@@ -8,7 +8,7 @@
     "columbia": {
       "release": "Columbia (ForgeryVCR 832x832)",
       "splits": {
-        "test": {
+        "full": {
           "samples": 363,
           "categories": {
             "real": 183,
@@ -285,7 +285,7 @@
           },
           "parquet_files": [
             {
-              "path": "columbia/parquet/test-00000-of-00001.parquet",
+              "path": "columbia/parquet/full-00000-of-00001.parquet",
               "rows": 363,
               "row_groups": 4,
               "bytes": 241356919
@@ -295,7 +295,9 @@
           "embedded_image_bytes": 241472041,
           "embedded_mask_bytes": 1228718
         }
-      }
+      },
+      "split_origin": "No fixed official train/validation/test partition; full contains all images supplied in the two ForgeryVCR archives.",
+      "upstream_split": "test"
     }
   },
   "export": {