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data-profiling

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【数据轮廓速览】当用户刚上传数据、问"数据有多少行"、"有哪些字段"、"数据长什么样"时使用。描述数据结构(行列数、字段类型、缺失率、分布特征、数据质量),不计算建模指标。无需目标变量。与 feature-analysis 的区别:只做"描述"不做"分析",不计算IV/PSI/相关性等建模指标。

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Source SKILL.md: https://github.com/aliyun/qwen-dianjin/blob/HEAD/DianJin-SKILLS/financial-engineering-expert/data-profiling/SKILL.md

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数据洞察报告 (portable)

基于 scripts/profiler.py 主脚本,对数据集进行轮廓扫描,生成数据概况报告。


参数说明

参数必选默认值说明
--data_path✅-数据文件路径(parquet/csv)
--outputdata_profiling_report.md报告输出路径
--output_dir./outputs/<ts>产物输出目录
--output_namedata_profiling_report报告基名(不含扩展名)
--config-JSON 配置文件路径

执行方式

python scripts/profiler.py \
  --data_path ./examples/toy.parquet \
  --output_dir ./outputs/profile_run

执行结束后:

  • 产物目录 <output_dir>/ 下生成:
    • report.md — 数据概况报告
    • result.json — 结构化产物清单(见 PROTOCOL.md)
  • stdout 末行打印 result.json 绝对路径,Agent 读这个文件即可

产物示例

{
  "skill": "data-profiling",
  "status": "success",
  "files": [
    {"path": ".../report.md", "role": "report"}
  ],
  "metrics": {"n_rows": 10000, "n_cols": 28, "n_missing_cols": 5},
  "summary": "中等规模数据集(10,000行),28 个字段,数值型为主,发现 2 个高缺失字段"
}

报告输出结构

章节内容
1. 数据概览文件名、格式、大小、行列数、字段类型分布饼图
2. 字段详情清单每个字段的类型、缺失率、唯一值数、示例值
3. 数值特征分析描述性统计(均值/标准差/分位数/偏度/峰度)+ histogram 分布图
4. 类别特征分析唯一值数、Top 值占比、集中度 + bar chart
5. 缺失值分析缺失率排名表格 + 柱状图
6. 数据质量重复行、空列、常量列、高缺失列
7. 样本预览前 5 行数据展示

自适应展示

当数值/类别特征数量超过 20 个时,统计表格和图表只展示前 20 个,避免报告过长。


与其他 Skill 的关系

Skill用途区别
data-profiling快速了解数据轮廓,不做深度分析
feature-analysis深度特征分析(IV、PSI、相关性等),需要目标变量
xgb-modeling建模全流程,需要目标变量

建议流程:

  1. 先用 data-profiling 了解数据基本情况
  2. 根据洞察结果,决定是否需要 feature-analysis 或 xgb-modeling

注意事项

  1. 无需目标变量:本 Skill 不需要提供目标变量,纯数据描述
  2. 快速轻量:执行速度快,适合大数据集的快速扫描
  3. 自动类型推断:识别数值型、类别型、布尔型、时间型、文本型字段