0723_merge3

This commit is contained in:
朱晗 2025-07-23 17:06:47 +08:00
parent 2a2e2fe360
commit 8e82c59faa
2 changed files with 130 additions and 2 deletions

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@ -1,6 +1,4 @@
import base64
import math
import os
from io import BytesIO
from typing import Any, Dict, Optional, Union
@ -8,6 +6,7 @@ from datasets import load_dataset
from datasets.distributed import split_dataset_by_node
from PIL.Image import Image as ImageObject
def convert_image(
image: Union[Dict[str, Any], ImageObject, str],
min_pixels: Optional[int],

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@ -0,0 +1,129 @@
import math
from io import BytesIO
from typing import Any, Dict, Optional, Union
from datasets import load_dataset
from datasets.distributed import split_dataset_by_node
from PIL.Image import Image as ImageObject
def convert_image(
image: Union[Dict[str, Any], ImageObject, str],
min_pixels: Optional[int],
max_pixels: Optional[int],
) -> ImageObject:
if max_pixels is not None and (image.width * image.height) > max_pixels:
resize_factor = math.sqrt(max_pixels / (image.width * image.height))
width, height = int(image.width * resize_factor), int(
image.height * resize_factor
)
image = image.resize((width, height))
if min_pixels is not None and (image.width * image.height) < min_pixels:
resize_factor = math.sqrt(min_pixels / (image.width * image.height))
width, height = int(image.width * resize_factor), int(
image.height * resize_factor
)
image = image.resize((width, height))
if image.mode != "RGB":
image = image.convert("RGB")
with BytesIO() as output:
image.save(output, format="JPEG")
return output.getvalue()
def get_geometry3k_sft_dataset(path, split, processor, rank, world_size):
"""
"geometry3k": {
"image_key": "images",
"question_key": "problem",
"answer_key": "answer"
},
"""
dataset = load_dataset(path=path, split=split)
dataset = split_dataset_by_node(dataset, rank=rank, world_size=world_size)
tokenizer = processor.tokenizer
def process_example(example, idx):
# Add query_id column
images = example["images"]
if "qwen" in processor.image_processor.image_processor_type.lower():
image_token = "<|vision_start|><|image_pad|><|vision_end|>"
else:
image_token = processor.image_token if processor is not None else "<image>"
example["problem"] = example["problem"].replace("<image>", image_token)
processed_images = []
for image in images:
processed_images.append(convert_image(image, 113 * 113, 336 * 336))
example["images"] = processed_images
example["seq"] = example["problem"] + example["answer"] + tokenizer.eos_token
return example
dataset = dataset.map(
lambda example, idx: process_example(example, idx),
with_indices=True,
)
def _process(example):
text = example["seq"]
processed_input = processor(
text=[text],
images=example["images"],
padding=False,
return_tensors="pt",
return_length=True,
return_attention_mask=False,
)
example["input_ids"] = processed_input["input_ids"].squeeze(0)
example["pixel_values"] = processed_input["pixel_values"]
example["image_grid_thw"] = processed_input["image_grid_thw"]
answer_token = tokenizer.encode(example["answer"])
loss_mask = [0] * (len(example["input_ids"]) - len(answer_token)) + [1] * len(
answer_token
)
example["loss_mask"] = loss_mask
return example
dataset = dataset.map(
lambda x: _process(x), remove_columns=["images", "seq", "problem", "answer"]
)
return dataset
def get_geometry3k_rl_dataset(path, split, processor, rank, world_size):
dataset = load_dataset(path=path, split=split)
dataset = split_dataset_by_node(dataset, rank=rank, world_size=world_size)
def process(sample):
processed_images = [
convert_image(image, 113 * 113, 336 * 336) for image in sample["images"]
]
if "qwen" in processor.image_processor.image_processor_type.lower():
image_token = "<|vision_start|><|image_pad|><|vision_end|>"
else:
image_token = processor.image_token if processor is not None else "<image>"
system_prompt = {
"role": "system",
"content": (
"Given the image and the mathematical problem, start by thinking step by step. Think through each step clearly and logically. Finally, provide the answer in LaTeX format, enclosed by $$ symbols. Do not include any additional text beyond the LaTeX answer. Start your thinking with 'Thinking:'."
),
}
messages = [
{
"role": "user",
"content": sample["problem"].replace("<image>", image_token),
}
]
messages.insert(0, system_prompt)
messages = processor.tokenizer.apply_chat_template(
messages, add_generation_prompt=True, tokenize=False
)
return {"messages": messages, "images": processed_images}
dataset = dataset.map(process).remove_columns(["problem"])
return dataset