## 📘 Overview [MathBookQuestionExtract](https://github.com/OpenDCAI/DataFlow/blob/main/dataflow/operators/reasoning/generate/reasoning_answer_generator.py)
This operator extracts questions and related images from mathematics textbook PDFs. It converts the PDF to images, uses MinerU for content extraction, organizes the images, and analyzes the content using a large vision-language model, ultimately generating JSON and Markdown files containing questions and images.

## __init__ function
```python
def __init__(self, llm_serving: APIVLMServing_openai, prompt_template = None):

init parameters description

Parameter	Type	Default Value	Description
llm_serving	APIVLMServing_openai	Required	A Vision Language Model (VLM) serving object that implements the APIVLMServing_openai interface.
prompt_template	PromptABC	None	A prompt template object to guide the VLM. If not provided, MathbookQuestionExtractPrompt() is used by default.

Prompt Template Descriptions

run function

def run(
    self,
    pdf_file_path: str,
    output_file_name: str,
    output_folder: str,
    MinerU_Backend: str = "vlm-sglang-engine",
    dpi: int = 300,
    api_url: str = "http://123.129.219.111:3000/v1",
    key_name_of_api_key: str = "DF_API_KEY",
    model_name: str = "o4-mini",
    max_workers: int = 20
)

Parameters

Name	Type	Default Value	Description
pdf_file_path	str	Required	The file path to the input mathematics textbook PDF.
output_file_name	str	Required	The base name for the output files (e.g., "chapter1_questions").
output_folder	str	Required	The path to the directory where output files will be saved.
MinerU_Backend	str	"vlm-sglang-engine"	The backend to use for the MinerU content extraction process.
dpi	int	300	The resolution (dots per inch) for converting PDF pages to images.
api_url	str	"http://..."	The URL of the Vision Language Model API service.
key_name_of_api_key	str	"DF_API_KEY"	The name of the environment variable containing the API key.
model_name	str	"o4-mini"	The name of the model to be used for content analysis.
max_workers	int	20	The maximum number of parallel worker threads for processing.

🧠 Example Usage