Update README.md

add usage python scripts

README.md

@@ -22,3 +22,38 @@ dataset_info:
   download_size: 32870167
   dataset_size: 77424914
 ---
+
+Usage:
+```python
+from dataclasses import dataclass
+import datasets
+
+@dataclass
+class ReplaceImagePath():
+    path_map: {}
+    def __call__(self, features):
+        for k, v in self.path_map.items():
+            features['image'] = features['image'].replace(k, v)
+        return features
+
+# setting
+ds_visdial = datasets.load_dataset('jxu124/visdial')
+path_coco = "/mnt/bn/hri-lq/datasets/coco"
+path_visdial = "/mnt/bn/data-lq/datasets-hf/hub/visdial"
+
+# 解压图片压缩文件（直接内存映射，不消耗时间）
+dl_manager = datasets.DownloadManager()
+path_visdial_dict = datasets.DownloadManager().download_and_extract({
+    "test": f"{path_visdial}/data/VisualDialog_test2018.zip", 
+    "validation": f"{path_visdial}/data/VisualDialog_val2018.zip"
+})
+# 设置路径映射
+path_map = {
+    "coco": path_coco,
+    "visdial/VisualDialog_test2018": f"{path_visdial_dict['test']}/VisualDialog_test2018",
+    "visdial/VisualDialog_val2018": f"{path_visdial_dict['validation']}/VisualDialog_val2018"
+}
+
+# apply your datasets
+ds_visdial = ds_visdial.map(ReplaceImagePath(path_map)).cast_column("image", datasets.Image())
+```