特征工程入门与实践 从零入手 全面了解特征工程 提升机器学习算法的效率、准确率
特征工程是数据科学和机器学习流水线上的重要一环,包括识别、清洗、构建和发掘数据的特征,为进一步解释数据并进行预测性分析做准备。本书囊括了特征工程的全流程,从数据检查到可视化,再到转换和进一步处理等,并给出了大量数学工具,帮助读者掌握如何将数据处理、转换成适当的形式,以便送入计算机和机器学习流水线中进行处理。后半部分的特征工程实践用Python作为示例语言,循序渐进,通俗易懂。- 识别和利用不同类型的特征- 清洗数据中的特征,提升预测能力- 为何、如何进行特征选择和模型误差分析- 利用领域知识构建新特征- 基于数学知识交付特征- 使用机器学习算法构建特征- 掌握特征工程与特征优化- 在现实应用中利用特征工程
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5 STEPS TO A 5 500 AP STATISTICS QUESTIO(ISBN=9780071780704)
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Product Details 基本信息 ISBN-13 书号 9781498701327 Author 作者 Divya Srinivasan Sridhar Format 版本 平装-胶订 Pages Number 页数 304页 Publication Date 出版日期 2015-02-12 Shipping Weight 商品重量 430g Language 语种 英语 Book Contents 内容简介 This book examines the direct pay business model as a potential policy alternative and policy solution to the economic, technological, and sociocultural problems that have emerged as a result of the Affordable Care Act. Based on a research study conducted by the author, the book addresses key research issues that are supported by theory and recent literature. The research and hypotheses presented are tested and proven through a questionnaire and set of interviews with direct pay physicians as well as case studies that illustrate how the subject originated and why it is gaining momentum in today’s challenging health reform environment.
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