name	inset
description	诊断并处理缺失值（missing value 缺失值处理）
icon	🩹
allowedTools	["get_schema","profile_data","clean_data","query_data"]

缺失值处理

先量化字段和行级缺失，判断缺失机制及业务含义，再选择删除、常数、统计量或分组插补。修改前说明影响，保留可追溯结果，并在处理后验证缺失率和分布变化。

Use get_schema to identify tables, nullable fields, and candidate columns.
Use profile_data to quantify missingness before any modification.
Use clean_data with the appropriate missing-value operation only when the user intent is clear.
Use query_data after cleaning to verify row counts, remaining nulls, and distribution changes.

Tool entries: agent/tools/business/data.py::_tool_profile_data, agent/tools/business/data.py::_tool_clean_data
Profiling implementation: Function/Clean/data_profile.py
Missing-value implementation: Function/Clean/missing_handler.py

inset