Python机器学习基础教程:预测分析关键技术

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"Machine Learning in Python(2015).pdf" 是一本由Michael Bowles编写的关于机器学习的书籍,专注于使用Python进行预测分析。这本书共包含7个章节,涵盖了从基础预测算法到高级的机器学习技术。 1. **第一章:两种基本的预测算法** - 这一章介绍机器学习中最核心的两种算法,它们是构建预测模型的基础。通常包括线性回归和决策树等简单但实用的算法,这些算法易于理解,对于初学者来说是入门的好选择。 2. **第二章:通过理解数据来理解问题** - 数据是机器学习的关键,这一章强调了对数据集的探索性数据分析(EDA),包括数据清洗、特征工程和理解数据分布,以更好地理解问题背景并为后续建模做准备。 3. **第三章:预测模型构建:平衡性能、复杂性和大数据** - 在这里,作者讨论了如何在模型性能、模型复杂度以及处理大规模数据之间找到平衡。这可能涉及到特征选择、正则化和分布式计算技术。 4. **第四章:罚函数线性回归** - 罚函数线性回归,如Lasso和Ridge回归,是控制模型复杂度和防止过拟合的有效方法。这一章将深入解释这些方法的工作原理及其在实际中的应用。 5. **第五章:使用罚函数线性方法构建预测模型** - 在这一章,读者会学习如何实际运用上一章介绍的理论,构建和优化基于罚函数的线性模型,包括模型选择、参数调优和验证策略。 6. **第六章:集成方法** - 集成学习(如随机森林和梯度提升机)是提高模型性能的强大工具。本章将介绍这些方法的基本概念,以及如何在Python中实现它们。 7. **第七章:使用Python构建集成模型** - 最后一章将实践与理论结合,指导读者如何利用Python库(如scikit-learn)构建和评估集成学习模型,从而实现更高效的预测分析。 这本书旨在为读者提供一个全面的Python机器学习框架,从基础到高级,从理论到实践,适合对机器学习感兴趣的Python程序员和数据分析人员阅读。通过本书,读者可以学习到如何运用Python进行有效的预测分析,并掌握一系列重要的机器学习技术和工具。
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Machine Learning in Python: Essential Techniques for Predictive Analysis Paperback: 360 pages Publisher: Wiley; 1 edition (April 27, 2015) Language: English ISBN-10: 1118961749 ISBN-13: 978-1118961742 Learn a simpler and more effective way to analyze data and predict outcomes with Python Machine Learning in Python shows you how to successfully analyze data using only two core machine learning algorithms, and how to apply them using Python. By focusing on two algorithm families that effectively predict outcomes, this book is able to provide full descriptions of the mechanisms at work, and the examples that illustrate the machinery with specific, hackable code. The algorithms are explained in simple terms with no complex math and applied using Python, with guidance on algorithm selection, data preparation, and using the trained models in practice. You will learn a core set of Python programming techniques, various methods of building predictive models, and how to measure the performance of each model to ensure that the right one is used. The chapters on penalized linear regression and ensemble methods dive deep into each of the algorithms, and you can use the sample code in the book to develop your own data analysis solutions. Machine learning algorithms are at the core of data analytics and visualization. In the past, these methods required a deep background in math and statistics, often in combination with the specialized R programming language. This book demonstrates how machine learning can be implemented using the more widely used and accessible Python programming language. * Predict outcomes using linear and ensemble algorithm families * Build predictive models that solve a range of simple and complex problems * Apply core machine learning algorithms using Python * Use sample code directly to build custom solutions Machine learning doesn't have to be complex and highly specialized. Python makes this technology more accessible to a much wider audience, using methods that are simpler, effective, and well tested. Machine Learning in Python shows you how to do this, without requiring an extensive background in math or statistics.