It's been said that data is the new "dirt"—the raw material from which and on which you build the structures of the modern world. And like dirt, data can seem like a limitless, undifferentiated mass. The ability to take raw data, access it, filter it, process it, visualize it, understand it, and communicate it to others is possibly the most essential business problem for the coming decades.
"Machine learning," the process of automating tasks once considered the domain of highly-trained analysts and mathematicians, is the key to efficiently extracting useful information from this sea of raw data. By implementing the core algorithms of statistical data processing, data analysis, and data visualization as reusable computer code, you can scale your capacity for data analysis well beyond the capabilities of individual knowledge workers.
Machine Learning in Action is a unique book that blends the foundational theories of machine learning with the practical realities of building tools for everyday data analysis. In it, you'll use the flexible Python programming language to build programs that implement algorithms for data classification, forecasting, recommendations, and higher-level features like summarization and simplification.
As you work through the numerous examples, you'll explore key topics like classification, numeric prediction, and clustering. Along the way, you'll be introduced to important established algorithms, such as Apriori, through which you identify association patterns in large datasets and Adaboost, a meta-algorithm that can increase the efficiency of many machine learning tasks.
Peter Harrington holds Bachelors and Masters Degrees in Electrical Engineering. He worked for Intel Corporation for seven years in California and China. Peter holds five US patents and his work has been published in three academic journals. He is currently the chief scientist for Zillabyte Inc. Peter spends his free time competing in programming competitions, and building 3D printers.
理论推导太弱,导致部分代码实现难以理解为什么是这样写,建议配合吴恩达讲义使用。 另外贝叶斯那段代码实现应该是错误的,作者在计算概率的时候把分母给弄错了,还有就是因为python版本问题,在python3上跑书上程序需要对程序进行一些改动。 附代码修改: def classifyNB(vec2...
评分这本书的最大好处是让你能够用最基本的pyton语法,从底层上让你构建代码,实现我们常说的比如邮件过滤,数据分类的应用。很多时候你要写最基本的代码和结构去做这些工作,而不是像kaggle的tutorial或者其他的工程大多数告诉你一个lib库函数去调用,你能看到底层在干什么...
评分客观说,完全不能当入门书。 缺少必要的证明过程,有些甚至连公式都没有。 我觉得既然要学习机器学习,光改改代码完全是不够的,起码还得知道各个算法的基本公式和过程,不幸的是,这本书没有。 就比如逻辑斯蒂回归那章,他连损失函数都没提,就开始说梯度法了。问题是梯度法的...
评分如果你是机器学习的入门者,如果你想快速看到算法的执行效果,那么这本书适合你。 作者把算法的基本原理讲的很清楚,而且代码是完整可执行的。当然,如果你想了解算法背后的数学原理,还需要花时间去复习一下概率论、高等数学和线性代数。 BTW:读者最好有编程经验,有抽象思维。
读它是为了熟悉Python语言;内容是在不敢恭维。
评分基本没有算法优化,所以还是给3星。
评分入门好书
评分超级赞的入门好书,很多之前模糊的概念都通过本书中的例子弄明白了
评分Bad Smells in Codes...
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