[wip] add mix scheme (PaddlePaddle#664)

## PaddleMIX统一多模数据格式
1. [x] 纯文
2. [x] 单图
3. [x] 多图
4. [x] interleaved
5. [ ] 音频
6. [ ] 视频 

## 功能
1. [x]  `MIX`格式定义和检查
2. [x] `MM`格式到`MIX`格式转换Op

---

## 特殊字段
1. [x] `images <-> <image>id</image>`
2. [ ] `audios <-> <audio>id</audio>`
3. [ ] `videos <-> <video>id</video>`


```
[
    {
        'id': '000002b66c9c498e',
        'images': [
                {
                    'id': 0,
                    'url': 'train/000002b66c9c498e.jpg', 
                    'heigh': 100,
                    'width': 100,
                }, 
                {
                    'id': 1,
                    'url': 'train/000002b66c9c498e.jpg', 
                    'heigh': 100,
                    'width': 100,
                }, 
            ],
        'conversations': [
                {
                    'from': 'user', 
                    'value': '<image>id</image><image>id</image> xxxx'
                }, 
                {
                    'from': 'assistant', 
                    'value': 'xxx'
                },
                {
                    'from': 'user', 
                    'value': 'xxxx <image>id</image>'
                }, 
                {
                    'from': 'assistant', 
                    'value': 'xxx'
                }
            ],
    },
]
```

paddlemix/datacopilot/core/__init__.py

@@ -13,15 +13,13 @@
 # limitations under the License.
 
 
-from .schema import (
-    T,
-    SCHEMA,
-    is_valid_schema,
-)
+from .schema import T, SCHEMA, is_valid_schema
+from .dataset import MMDataset, ParallelMode
+from .register import register
 
-from .dataset import (
-    MMDataset, 
-    ParallelMode
-)
 
-from .register import register
+MODILATY_TOKENS = {
+    'image': '<image>\d+</image>',
+    'audio': '<audio>\d+</audio>',
+    'video': '<video>\d+</video>',
+}

paddlemix/datacopilot/core/dataset.py

@@ -122,6 +122,11 @@ def shuffle(self, seed: Optional[int]=None) -> 'MMDataset':
             random.shuffle(self._items)
         return self
 
+    def sample(self, k: int) -> 'MMDataset':
+        indices = random.sample(range(len(self)), k)
+        items = [self.items[i] for i in indices]
+        return MMDataset(items)
+
     @classmethod
     def from_json(cls, path: str, schema: SCHEMA=SCHEMA.MM) -> 'MMDataset':
         with open(path, 'r') as f:

paddlemix/datacopilot/core/schema.py

@@ -74,6 +74,74 @@ class SCHEMA(Enum):
 required: ['id', 'image', 'conversations']
 """
 
+    MIX = \
+"""
+$id: 'https://example.com/schemas/multimodal_mix'
+$schema: 'https://json-schema.org/draft/2020-12/schema'
+
+type: object
+properties:
+  id:
+    anyOf:
+      - 
+        type: string
+        pattern: '\S{1,}'
+      - 
+        type: integer
+        minimum: 0
+
+  images:
+    anyOf:
+      - 
+        type: 'null'
+      - 
+        type: array
+        minItems: 1
+        items:
+          type: object
+          properties:
+            id:
+              type: integer
+              minimum: 0
+            url:
+              type: string
+              pattern: '\.(jpg|jpeg|png|webp|JPG|JPEG|PNG)$'
+              description: '.png or .jpg or .jpeg or .webp'
+            heigh:
+              type: integer
+              minimum: 0
+            width:
+              type: integer
+              minimum: 0
+          required:
+            - id
+            - url
+            
+  conversations:
+    type: array
+    minItems: 1
+    items:
+      type: object
+      properties:
+        from:
+          type: string
+          description: 'user or assistant'
+          enum: 
+            - user
+            - assistant
+        value:
+          anyOf:
+            - type: string
+            - type: 'null'
+      required:
+        - from
+        - value
+required:
+  - id
+  - images
+  - conversations
+"""
+
 SCHEMA_VALIDATORS = {
     k: JsonSchemaValidator.from_string(k.value) for k in SCHEMA
 }

paddlemix/datacopilot/ops/__init__.py

@@ -12,5 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from ._info import info, head
-from ._h5 import from_h5, check_h5, export_h5
+
+from .analysis import *
+from .convert import *

paddlemix/datacopilot/ops/analysis/__init__.py

@@ -0,0 +1,17 @@
+# Copyright (c) 2024 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+from ._info import info, head
+

paddlemix/datacopilot/ops/_info.py → paddlemix/datacopilot/ops/analysis/_info.py

@@ -17,7 +17,7 @@
 from rich.table import Table
 from rich.columns import Columns
 
-from ..core import register, MMDataset
+from ...core import register, MMDataset
 
 
 @register(force=True)

paddlemix/datacopilot/ops/convert/__init__.py

@@ -0,0 +1,17 @@
+# Copyright (c) 2024 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+from ._h5 import from_h5, check_h5, export_h5
+from ._schema import convert_schema

paddlemix/datacopilot/ops/_h5.py → paddlemix/datacopilot/ops/convert/_h5.py

@@ -24,8 +24,8 @@
 
 from typing import List, Union
 
-from ..core import MMDataset, SCHEMA
-from ..misc import ParallelMode, parallel_map, freeze_rng_state, enumerate_chunk
+from ...core import MMDataset, SCHEMA
+from ...misc import ParallelMode, parallel_map, freeze_rng_state, enumerate_chunk
 
 __all__ = ['export_h5', 'check_h5', 'from_h5']
 

paddlemix/datacopilot/ops/convert/_schema.py

@@ -0,0 +1,73 @@
+# Copyright (c) 2024 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+from ...core import T
+from ...core import SCHEMA, is_valid_schema
+
+
+def convert_schema(
+    item: T, 
+    in_schema: SCHEMA=SCHEMA.MM, 
+    out_schema: SCHEMA=SCHEMA.MIX
+)-> T:
+    """convert scheme
+    """  
+    if in_schema == out_schema:
+        return item
+
+    # MM <-> MIX
+    elif in_schema == SCHEMA.MM and out_schema == SCHEMA.MIX:
+        return _convert_mm_mix(item)
+
+    else:
+        raise NotImplementedError('')
+
+
+def _convert_mm_mix(item):
+    if 'image' in item:
+        images = [{
+            'id': 0,
+            'url': item['image'],
+        }]
+    else:
+        images = None
+
+    conversations = []
+    for conv in item['conversations']:
+        if conv['from'] == 'human':
+            role = 'user'
+            if 'image' in item:
+                if '<image>' in conv['value']:
+                    value = conv['value'].replace('<image>', '<image>0</image>')
+                else:
+                    value = '<image>0</image>\n' + conv['value']
+            else:
+                value = conv['value']
+        else:
+            role = 'assistant'
+            value = conv['value']
+
+        conversations.append({
+            'from': role,
+            'value': value,
+        })
+
+    newitem = {
+        'id': item['id'],
+        'images': images,
+        'conversations': conversations
+    }
+    return newitem
+