boschetti a. - python data science essentials - 2015.pdf

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Python Data Science Essentials
Become an efficient data science practitioner by
thoroughly understanding the key concepts of Python
Alberto Boschetti
Luca Massaron
BIRMINGHAM - MUMBAI
Python Data Science Essentials
Copyright © 2015 Packt Publishing
All rights reserved. No part of this book may be reproduced, stored in a retrieval
system, or transmitted in any form or by any means, without the prior written
permission of the publisher, except in the case of brief quotations embedded in
critical articles or reviews.
Every effort has been made in the preparation of this book to ensure the accuracy
of the information presented. However, the information contained in this book is
sold without warranty, either express or implied. Neither the authors, nor Packt
Publishing, and its dealers and distributors will be held liable for any damages
caused or alleged to be caused directly or indirectly by this book.
Packt Publishing has endeavored to provide trademark information about all of the
companies and products mentioned in this book by the appropriate use of capitals.
However, Packt Publishing cannot guarantee the accuracy of this information.
First published: April 2015
Production reference: 1240415
Published by Packt Publishing Ltd.
Livery Place
35 Livery Street
Birmingham B3 2PB, UK.
ISBN 978-1-78528-042-9
www.packtpub.com
Credits
Authors
Alberto Boschetti
Luca Massaron
Project Coordinator
Reviewers
Robert Dempsey
Daniel Frimer
Kevin Markham
Alberto Gonzalez Paje
Bastiaan Sjardin
Michele Usuelli
Zacharias Voulgaris, PhD
Commissioning Editor
Julian Ursell
Acquisition Editor
Subho Gupta
Content Development Editor
Merwyn D'souza
Technical Editor
Namrata Patil
Proofreaders
Simran Bhogal
Faye Coulman
Safis Editing
Dan McMahon
Indexer
Priya Sane
Production Coordinator
Komal Ramchandani
Cover Work
Komal Ramchandani
Neha Bhatnagar
Copy Editor
Vedangi Narvekar
About the Authors
Alberto Boschetti
is a data scientist with expertise in signal processing and
statistics. He holds a PhD in telecommunication engineering and currently lives
and works in London. In his work projects, he faces challenges involving natural
language processing (NLP), machine learning, and probabilistic graph models
everyday. He is very passionate about his job and he always tries to stay updated
on the latest developments in data science technologies by attending meetups,
conferences, and other events.
I would like to thank my family, my friends, and my colleagues.
Also, a big thanks to the open source community.
Luca Massaron
is a data scientist and marketing research director who specializes
in multivariate statistical analysis, machine learning, and customer insight, with over
a decade of experience in solving real-world problems and generating value
for stakeholders by applying reasoning, statistics, data mining, and algorithms. From
being a pioneer of web audience analysis in Italy to achieving the rank of a top 10
Kaggler, he has always been passionate about everything regarding data and analysis
and about demonstrating the potentiality of data-driven knowledge discovery to
both experts and nonexperts. Favoring simplicity over unnecessary sophistication,
he believes that a lot can be achieved in data science by understanding its essentials.
To Yukiko and Amelia, for their loving patience. "Roads go ever ever
on, under cloud and under star, yet feet that wandering have gone
turn at last to home afar".

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