因子开发练习

Lesson Overview

In "Quant Strategy Development" → "因子构建", this lesson "因子开发练习" builds knowledge you can apply immediately.

因子开发要保存所有尝试，避免只公布最优公式。数据清洗、标签延迟和可交易性限制会改变样本，不应事后调整分母。 写因子卡→冻结参数→分训练/验证→生成缺值与样本流失表→计算关系→列反例与费用。 本课作业：为3步动量交因子卡，包含输入、公式、可用时点、标签、失败场景和未来样本计划。

Core Concepts

These points align with the video walkthrough—take notes as you watch.

• ▸因子开发要保存所有尝试，避免只公布最优公式。数据清洗、标签延迟和可交易性限制会改变样本，不应事后调整分母。
• ▸写因子卡→冻结参数→分训练/验证→生成缺值与样本流失表→计算关系→列反例与费用。
• ▸本课作业：为3步动量交因子卡，包含输入、公式、可用时点、标签、失败场景和未来样本计划。

Practical Application

After studying, complete the practice tasks below to move from understanding to doing.

• ▸Follow along in Jupyter or VS Code
• ▸Log how parameter changes affect backtest results
• ▸Submit a reproducible analysis notebook

FAQ

• ▸Q: How does this lesson fit the course? A: Part of "因子构建"—follow the curriculum order.
• ▸Q: What do I need? A: Demo account and notes; quant lessons need a Python environment.
• ▸Q: How do I know I've mastered it? A: Pass the quiz and explain three key points of 因子开发练习 on your own.