Download Python Data Science Cookbook by Gopi Subramanian PDF

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By Gopi Subramanian

Over 60 sensible recipes that can assist you discover Python and its strong facts technological know-how capabilities

About This Book

  • The publication is filled with easy and concise Python code examples to successfully exhibit complex suggestions in action
  • Explore suggestions similar to programming, information mining, info research, facts visualization, and computer studying utilizing Python
  • Get up to the mark on laptop studying algorithms with assistance from easy-to-follow, insightful recipes

Who This e-book Is For

This booklet is meant for all degrees of knowledge technological know-how pros, either scholars and practitioners, ranging from beginner to specialists. newbies can spend their time within the first 5 chapters getting themselves accustomed to info technological know-how. specialists can check with the chapters ranging from 6 to appreciate how complex thoughts are applied utilizing Python. humans from non-Python backgrounds may also successfully use this booklet, however it will be necessary in case you have a few past uncomplicated programming experience.

What you are going to Learn

  • Explore the total diversity of information technology algorithms
  • Get to understand the methods utilized by engineers to create the main exact info technology models
  • Manage and use Python libraries comparable to numpy, scipy, scikit research, and matplotlib effectively
  • Create significant positive aspects to resolve real-world problems
  • Take a glance at complex Regression equipment for version development and variable selection
  • Get an intensive realizing of the underlying suggestions and implementation of Ensemble methods
  • Solve real-world difficulties utilizing numerous diverse datasets from numerical and textual content facts modalities
  • Get familiar with sleek state-of-the paintings algorithms akin to Gradient Boosting, Random woodland, Rotation wooded area, and so on

In Detail

Python is more and more changing into the language for information technological know-how. it's overtaking R by way of adoption, it really is widely recognized via many builders, and has a robust set of libraries resembling Numpy, Pandas, scikit-learn, Matplotlib, Ipython and Scipy, to help its utilization during this box. facts technology is the rising new sizzling tech box, that's an amalgamation of other disciplines together with facts, laptop studying, and computing device technology. it is a disruptive know-how altering the face of ultra-modern enterprise and changing the financial system of assorted verticals together with retail, production, on-line ventures, and hospitality, to call a couple of, in a major way.

This e-book will stroll you thru some of the steps, ranging from basic to the main advanced algorithms on hand within the facts technology arsenal, to successfully mine info and derive intelligence from it. At each step, we offer uncomplicated and effective Python recipes that may not purely help you enforce those algorithms, but additionally make clear the underlying idea thoroughly.

The publication starts through introducing you to utilizing Python for facts technology, by way of operating with Python environments. you are going to then tips on how to examine your info with Python. The ebook then teaches you the thoughts of information mining via an in depth assurance of computing device studying equipment. It introduces you to a few Python libraries on hand to assist enforce computing device studying and information mining exercises successfully. It additionally covers the foundations of shrinkage, ensemble equipment, random wooded area, rotation woodland, and severe bushes, that are essential for any profitable information technology Professional.

Style and approach

This is a step by step recipe-based method of info technology algorithms, introducing the maths philosophy in the back of those algorithms.

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Sample text

List can be accessed through indexing. Indexing starts at 0. With negative indexing the elements of a list are accessed from backwards. Slicing is accessing a subset of list by providing two indices. List concatenation a = [1,2] b = [3,4] print a + b # prints [1, 2, 3, 4] # 6. List min max print min(a),max(a) # 7. in and not in if 1 in a: print "Element 1 is available in list a" else: print "Element 1 is available in tuple a" # 8. pop(0) # 11. reverse() print a How it works… In step 1, we saw different ways of creating a list.

By default, it sorts in an ascending order. Sorting is explained in detail in a later section of this chapter. The reverse() function will reverse the elements of a list. We will first create a list with elements from 1 to 19: a = range(1,20) We will shuffle the elements using the shuffle() function from a module random. This shuffles the elements so that we can demonstrate the sort operations. reverse() is also an in-place operation that produces the following output: [19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1] There's more… The deque stands for double-ended queue.

In step 9, we will show how a list can be used as a stack. The pop() function helps to retrieve the last element appended to the list. The output is as follows: 3 2 1 The last element to be appended is the first element to be retrieved Last In, First Out (LIFO) style as in stacks. In step 10, we will implement a queue using a list. The pop() function with zero as a parameter indicates that the index of the element to be retrieved has been passed. The output is as follows: 1 2 3 The output adheres to the LIFO style of a queue.

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