random_selector

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从CSV数据集中随机抽取样本。支持按比例（0-1）或固定数量抽取，当两者同时提供时取较小值。

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Source SKILL.md: https://github.com/cas-bigdatalab/piflow/blob/HEAD/workspace/skills/random_selector/SKILL.md

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random_selector

Overview

该技能通过 random_selector.py 执行 CSV 数据随机采样。

Instructions

1. 检查文件

确保 input_file 存在。

2. 构建命令

根据需求组合参数，仅提供用户明确指定的参数。若参数为可选（None），则不要在 shell 命令中包含该 flag。

3. 执行采样

使用以下模板执行：

python scripts/random_selector.py \
  --input_file "{input_file}" \
  --output_file "{output_file}" \
  { "--select_ratio " + str(select_ratio) if select_ratio else "" } \
  { "--select_num " + str(select_num) if select_num else "" } \
  { "--seed " + str(seed) if seed else "" }