实战Scikit-Learn与TensorFlow机器学习

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《手把手教你用Scikit-Learn和TensorFlow进行机器学习》是一本由Aurélien Géron撰写的实践导向教程,专注于在实际场景中运用Scikit-Learn和TensorFlow这两种流行的机器学习工具。这本书旨在帮助读者理解并掌握概念、工具和技术,从而构建智能系统。作者在书中深入浅出地介绍了如何利用Scikit-Learn进行数据预处理、特征工程、模型选择和评估,同时也会引导读者步入TensorFlow的世界,体验深度学习的强大能力。 该书的核心内容包括但不限于以下几个方面: 1. **Scikit-Learn简介**:作为Python中最常用的数据科学库之一,Scikit-Learn提供了一套完整的机器学习流程,包括数据加载、探索性数据分析、分类、回归、聚类、降维和模型选择等模块。读者将学会如何使用这些工具解决实际问题。 2. **监督学习基础**:Scikit-Learn中的线性回归、逻辑回归、决策树、随机森林、支持向量机等经典算法将被详细讲解,以及它们如何通过Scikit-Learn接口实现和调优。 3. **神经网络与深度学习入门**:书中会介绍如何使用TensorFlow库构建神经网络,包括多层感知器、卷积神经网络(CNN)和循环神经网络(RNN),并涵盖数据增强、反向传播等关键概念。 4. **实践案例分析**:书中包含多个实战项目,如图像分类、文本分析、推荐系统等,让读者在实践中熟悉和巩固所学知识。 5. **模型评估与调优**:学习如何使用交叉验证、网格搜索等方法评估模型性能,并优化超参数,以提高模型在真实世界中的表现。 6. **最新进展与未来趋势**:作者也会讨论当前机器学习领域的最新研究和发展动态,以及如何跟上技术的步伐。 《手把手教你用Scikit-Learn和TensorFlow进行机器学习》不仅适合初学者快速上手,也对有一定经验的开发人员提供了进阶实践指导。无论是希望系统学习机器学习,还是寻求在工作中应用这两种工具的开发者,这本书都是不可或缺的参考资料。
2017-12-23 上传
When most people hear “Machine Learning,” they picture a robot: a dependable butler or a deadly Terminator depending on who you ask. But Machine Learning is not just a futuristic fantasy, it’s already here. In fact, it has been around for decades in some specialized applications, such as Optical Character Recognition (OCR). But the first ML application that really became mainstream, improving the lives of hundreds of millions of people, took over the world back in the 1990s: it was the spam filter. Not exactly a self-aware Skynet, but it does technically qualify as Machine Learning (it has actually learned so well that you seldom need to flag an email as spam anymore). It was followed by hundreds of ML applications that now quietly power hundreds of products and features that you use regularly, from better recommendations to voice search. Where does Machine Learning start and where does it end? What exactly does it mean for a machine to learn something? If I download a copy of Wikipedia, has my computer really “learned” something? Is it suddenly smarter? In this chapter we will start by clarifying what Machine Learning is and why you may want to use it. Then, before we set out to explore the Machine Learning continent, we will take a look at the map and learn about the main regions and the most notable landmarks: supervised versus unsupervised learning, online versus batch learning, instance-based versus model-based learning. Then we will look at the workflow of a typical ML project, discuss the main challenges you may face, and cover how to evaluate and fine-tune a Machine Learning system. This chapter introduces a lot of fundamental concepts (and jargon) that every data scientist should know by heart. It will be a high-level overview (the only chapter without much code), all rather simple, but you should make sure everything is crystal-clear to you before continuing to the rest of the book. So grab a coffee and let’s get started!
2017-03-15 上传
Hands-On Machine Learning with Scikit-Learn and TensorFlow: Concepts, Tools, and Techniques to Build Intelligent Systems by Aurélien Géron English | 13 Mar. 2017 | ASIN: B06XNKV5TS | 581 Pages | AZW3 | 21.66 MB Through a series of recent breakthroughs, deep learning has boosted the entire field of machine learning. Now, even programmers who know close to nothing about this technology can use simple, efficient tools to implement programs capable of learning from data. This practical book shows you how. By using concrete examples, minimal theory, and two production-ready Python frameworks—scikit-learn and TensorFlow—author Aurélien Géron helps you gain an intuitive understanding of the concepts and tools for building intelligent systems. You’ll learn a range of techniques, starting with simple linear regression and progressing to deep neural networks. With exercises in each chapter to help you apply what you’ve learned, all you need is programming experience to get started. Explore the machine learning landscape, particularly neural nets Use scikit-learn to track an example machine-learning project end-to-end Explore several training models, including support vector machines, decision trees, random forests, and ensemble methods Use the TensorFlow library to build and train neural nets Dive into neural net architectures, including convolutional nets, recurrent nets, and deep reinforcement learning Learn techniques for training and scaling deep neural nets Apply practical code examples without acquiring excessive machine learning theory or algorithm details