第1 章机器学习 ··············································································································1__eol__1.1 机器学习简介·······································································································1__eol__1.1.1 机器学习的概念······························································································1__eol__1.1.2 机器学习的应用领域························································································1__eol__1.2 机器学习通用流程································································································2__eol__1.2.1 目标分析·······································································································2__eol__1.2.2 数据准备·······································································································3__eol__1.2.3 特征工程·······································································································4__eol__1.2.4 模型训练与调优······························································································5__eol__1.2.5 性能度量与模型应用························································································6__eol__1.3 Python 机器学习工具库简介·················································································6__eol__1.3.1 数据准备相关工具库························································································6__eol__1.3.2 数据可视化相关工具库·····················································································7__eol__1.3.3 模型训练与评估相关工具库···············································································8__eol__小结····························································································································9__eol__课后习题 ··················································································································· 10__eol__第 2 章数据准备 ············································································································ 12__eol__2.1 数据质量校验····································································································· 12__eol__2.1.1 一致性校验·································································································· 12__eol__2.1.2 缺失值校验·································································································· 15__eol__2.1.3 异常值校验·································································································· 17__eol__2.2 数据分布与趋势探查·························································································· 18__eol__2.2.1 分布分析····································································································· 18__eol__2.2.2 对比分析····································································································· 22__eol__2.2.3 描述性统计分析···························································································· 25__eol__2.2.4 周期性分析·································································································· 28__eol__2.2.5 贡献度分析·································································································· 29__eol__2.2.6 相关性分析·································································································· 31__eol__VIII__eol__2.3 数据清洗············································································································ 35__eol__2.3.1 缺失值处理·································································································· 35__eol__2.3.2 异常值处理·································································································· 38__eol__2.4 数据合并············································································································ 39__eol__2.4.1 数据堆叠····································································································· 39__eol__2.4.2 主键合并·························································