About This Book
Leverage Python' s most powerful open-source libraries for deep learning, data wrangling, and data visualization
Learn effective strategies and best practices to improve and optimize machine learning systems and algorithms
Ask – and answer – tough questions of your data with robust statistical models, built for a range of datasets
Who This Book Is For
If you want to find out how to use Python to start answering critical questions of your data, pick up Python Machine Learning – whether you want to get started from scratch or want to extend your data science knowledge, this is an essential and unmissable resource.
What You Will Learn
Explore how to use different machine learning models to ask different questions of your data
Learn how to build neural networks using Keras and Theano
Find out how to write clean and elegant Python code that will optimize the strength of your algorithms
Discover how to embed your machine learning model in a web application for increased accessibility
Predict continuous target outcomes using regression analysis
Uncover hidden patterns and structures in data with clustering
Organize data using effective pre-processing techniques
Get to grips with sentiment analysis to delve deeper into textual and social media data
Style and approach
Python Machine Learning connects the fundamental theoretical principles behind machine learning to their practical application in a way that focuses you on asking and answering the right questions. It walks you through the key elements of Python and its powerful machine learning libraries, while demonstrating how to get to grips with a range of statistical models.

An Introduction to Statistical Learning provides an accessible overview of the field of statistical learning, an essential toolset for making sense of the vast and complex data sets that have emerged in fields ranging from biology to finance to marketing to astrophysics in the past twenty years. This book presents some of the most important modeling and prediction techniques, along with relevant applications. Topics include linear regression, classification, resampling methods, shrinkage approaches, tree-based methods, support vector machines, clustering, and more. Color graphics and real-world examples are used to illustrate the methods presented. Since the goal of this textbook is to facilitate the use of these statistical learning techniques by practitioners in science, industry, and other fields, each chapter contains a tutorial on implementing the analyses and methods presented in R, an extremely popular open source statistical software platform. Two of the authors co-wrote The Elements of Statistical Learning (Hastie, Tibshirani and Friedman, 2nd edition 2009), a popular reference book for statistics and machine learning researchers. An Introduction to Statistical Learning covers many of the same topics, but at a level accessible to a much broader audience. This book is targeted at statisticians and non-statisticians alike who wish to use cutting-edge statistical learning techniques to analyze their data. The text assumes only a previous course in linear regression and no knowledge of matrix algebra.

The year 1984 has come and gone, but George Orwell's prophetic, nightmarish vision in 1949 of the world we were becoming is timelier than ever. 1984 ...more [close] The year 1984 has come and gone, but George Orwell's prophetic, nightmarish vision in 1949 of the world we were becoming is timelier than ever. 1984 is still the great modern classic of "negative utopia"--a startlingly original and haunting novel that creates an imaginary world that is completely convincing, from the first sentence to the last four words. No one can deny the novel's hold on the imaginations of the whole generations, or the power of its admonitions--a power that seem to grow, not lessen, with the passage of time.

这本书主要是用 pandas 连接 SciPy 和 NumPy，用pandas做数据处理是Pycon2012上一个很热门的话题。另一个功能强大的东西是Sage，它将很多开源的软件集成到统一的 Python 接口。
Python for Data Analysis is concerned with the nuts and bolts of manipulating, processing, cleaning, and crunching data in Python. It is also a practical, modern introduction to scientific computing in Python, tailored for data-intensive applications. This is a book about the parts of the Python language and libraries you’ll need to effectively solve a broad set of data analysis problems. This book is not an exposition on analytical methods using Python as the implementation language.
Written by Wes McKinney, the main author of the pandas library, this hands-on book is packed with practical cases studies. It’s ideal for analysts new to Python and for Python programmers new to scientific computing.
Use the IPython interactive shell as your primary development environment
Learn basic and advanced NumPy (Numerical Python) features
Get started with data analysis tools in the pandas library
Use high-performance tools to load, clean, transform, merge, and reshape data
Create scatter plots and static or interactive visualizations with matplotlib
Apply the pandas groupby facility to slice, dice, and summarize datasets
Measure data by points in time, whether it’s specific instances, fixed periods, or intervals
Learn how to solve problems in web analytics, social sciences, finance, and economics, through detailed examples

"The Catcher in Rye" is the ultimate novel for disaffected youth, but it's relevant to all ages. The story is told by Holden Caulfield, a seventeen- year-old dropout who has just been kicked out of his fourth school. Throughout, Holden dissects the 'phony' aspects of society, and the 'phonies' themselves: the headmaster whose affability depends on the wealth of the parents, his roommate who scores with girls using sickly-sweet affection. Lazy in style, full of slang and swear words, it's a novel whose interest and appeal comes from its observations rather than its plot intrigues (in conventional terms, there is hardly any plot at all). Salinger's style creates an effect of conversation, it is as though Holden is speaking to you personally, as though you too have seen through the pretences of the American Dream and are growing up unable to see the point of living in, or contributing to, the society around you. Written with the clarity of a boy leaving childhood, it deals with society, love, loss, and expectations without ever falling into the clutch of a cliche.
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麦田里的守望者(纪念版)

An unprecedented wealth of data is being generated by genome sequencing projects and other experimental efforts to determine the structure and function of biological molecules. The demands and opportunities for interpreting these data are expanding rapidly. Bioinformatics is the development and application of computer methods for management, analysis, interpretation, and prediction, as well as for the design of experiments. Machine learning approaches (e.g., neural networks, hidden Markov models, and belief networks) are ideally suited for areas where there is a lot of data but little theory, which is the situation in molecular biology. The goal in machine learning is to extract useful information from a body of data by building good probabilistic models--and to automate the process as much as possible.In this book Pierre Baldi and Soren Brunak present the key machine learning approaches and apply them to the computational problems encountered in the analysis of biological data. The book is aimed both at biologists and biochemists who need to understand new data-driven algorithms and at those with a primary background in physics, mathematics, statistics, or computer science who need to know more about applications in molecular biology.This new second edition contains expanded coverage of probabilistic graphical models and of the applications of neural networks, as well as a new chapter on microarrays and gene expression. The entire text has been extensively revised.

Covering the dramatic rise of German science in the nineteenth century, its preeminence in the early twentieth, and the frightening developments that led to its collapse in 1945, this is the compelling story of German scientists under Hitler’s regime. Weaving the history of science and technology with the fortunes of war and the stories of men and women whose discoveries brought both benefits and destruction to the world, Hitler’s Scientists raises questions that are still urgent today. As science becomes embroiled in new generations of weapons of mass destruction and the war against terrorism, as advances in biotechnology outstrip traditional ethics, this powerful account of Nazi science forms a crucial commentary on the ethical role of science.

This reference describes the role of various intermolecular and interparticle forces in determining the properties of simple systems such as gases, liquids and solids, with a special focus on more complex colloidal, polymeric and biological systems. The book provides a thorough foundation in theories and concepts of intermolecular forces, allowing researchers and students to recognize which forces are important in any particular system, as well as how to control these forces. This third edition is expanded into three sections and contains five new chapters over the previous edition.
· starts from the basics and builds up to more complex systems
· covers all aspects of intermolecular and interparticle forces both at the fundamental and applied levels
· multidisciplinary approach: bringing together and unifying phenomena from different fields
· This new edition has an expanded Part III and new chapters on non-equilibrium (dynamic) interactions, and tribology (friction forces)

Harry has been burdened with a dark, dangerous and seemingly impossible task: that of locating and destroying Voldemort’s remaining Horcruxes. Never has Harry felt so alone, or faced a future so full of shadows. But Harry must somehow find within himself the strength to complete the task he has been given. He must leave the warmth, safety, and companionship of The Burrow and follow without fear or hesitation the inexorable path laid out for him.
In this final, seventh installment of the Harry Potter series, J.K. Rowling unveils in spectacular fashion the answers to the many questions that have been so eagerly awaited. The spellbinding, richly woven narrative, which plunges, twists and turns at a breathtaking pace, confirms the author as a mistress of storytelling, whose books will be read, reread and read again.
Harry is waiting in Privet Drive. The Order of the Phoenix is coming to escort him safely away without Voldemort and his supporters knowing – if they can. But what will Harry do then? How can he fulfil the momentous and seemingly impossible task that Professor Dumbledore has left him with?

The long-awaited, eagerly anticipated, arguably over-hyped Harry Potter and the Half-Blood Prince has arrived, and the question on the minds of kids, adults, fans, and skeptics alike is, "Is it worth the hype?" The answer, luckily, is simple: yep. A magnificent spectacle more than worth the price of admission, Harry Potter and the Half-Blood Prince will blow you away. However, given that so much has gone into protecting the secrets of the book (including armored trucks and injunctions), don't expect any spoilers in this review. It's much more fun not knowing what's coming--and in the case of Rowling's delicious sixth book, you don't want to know. Just sit tight, despite the earth-shattering revelations that will have your head in your hands as you hope the words will rearrange themselves into a different story. But take one warning to heart: do not open Harry Potter and the Half-Blood Prince until you have first found a secluded spot, safe from curious eyes, where you can tuck in for a good long read. Because once you start, you won't stop until you reach the very last page.
A darker book than any in the series thus far with a level of sophistication belying its genre, Harry Potter and the Half-Blood Prince moves the series into murkier waters and marks the arrival of Rowling onto the adult literary scene. While she has long been praised for her cleverness and wit, the strength of Book 6 lies in her subtle development of key characters, as well as her carefully nuanced depiction of a community at war. In Harry Potter and the Half-Blood Prince, no one and nothing is safe, including preconceived notions of good and evil and of right and wrong. With each book in her increasingly remarkable series, fans have nervously watched J.K. Rowling raise the stakes; gone are the simple delights of butterbeer and enchanted candy, and days when the worst ailment could be cured by a bite of chocolate. A series that began as a colorful lark full of magic and discovery has become a dark and deadly war zone. But this should not come as a shock to loyal readers. Rowling readied fans with Harry Potter and the Goblet of Fire and Harry Potter and the Order of the Phoenix by killing off popular characters and engaging the young students in battle. Still, there is an unexpected bleakness from the start of Book 6 that casts a mean shadow over Quidditch games, silly flirtations, and mountains of homework. Ready or not, the tremendous ending of Harry Potter and the Half-Blood Prince will leave stunned fans wondering what great and terrible events await in Book 7 if this sinister darkness is meant to light the way. --Daphne Durham

Harry Potter is due to start his fifth year at Hogwarts School of Witchcraft and Wizardry.His best friends Ron and Hermione have been very secretive all summer and he is desperate to get back to school and find out what has been going on.However,what Harry discovers is far more devastating than he could ever have expected…

It is the summer holidays and soon Harry Potter will be starting his fourth year at Hogwarts School of Witchcraft and Wizardry.Harry is counting the days:there are new spells to be learnt,more Quidditch to be played,and Hogwarts castle to continue exploring.But Harry needs to be careful—ther are unexpected dagers lurking…

Don't simply show your data—tell a story with it!
Storytelling with Data teaches you the fundamentals of data visualization and how to communicate effectively with data. You'll discover the power of storytelling and the way to make data a pivotal point in your story. The lessons in this illuminative text are grounded in theory, but made accessible through numerous real-world examples—ready for immediate application to your next graph or presentation.
Storytelling is not an inherent skill, especially when it comes to data visualization, and the tools at our disposal don't make it any easier. This book demonstrates how to go beyond conventional tools to reach the root of your data, and how to use your data to create an engaging, informative, compelling story. Specifically, you'll learn how to:
Understand the importance of context and audience
Determine the appropriate type of graph for your situation
Recognize and eliminate the clutter clouding your information
Direct your audience's attention to the most important parts of your data
Think like a designer and utilize concepts of design in data visualization
Leverage the power of storytelling to help your message resonate with your audience
Together, the lessons in this book will help you turn your data into high impact visual stories that stick with your audience. Rid your world of ineffective graphs, one exploding 3D pie chart at a time. There is a story in your data—Storytelling with Data will give you the skills and power to tell it!

Harry Potter,along with his best friends,Ron and Hermione,is about to start his third year at Hogwarts School of Witchcraft and Wizardry.Harry can't wait to get back to school after the summer holidays.(Who wouldn't if they lived with th horrible Dusley?)But when Harry gets to Hogwarts,the atmosphere is tense.There's an escaped mass murderer on the loose,and the sinister prison guards of Azkaban have been called in to guard the school…

In one of the most hotly anticipated sequels in memory, J.K. Rowling takes up where she left with Harry s second year at the Hogwarts School of Witchcraft and Wizardry. Old friends and new torments abound, including a spirit named Moaning Myrtle who haunts the girl s bathroom, an outrageously conceited professor, Gilderoy Lockheart, and a mysterious force that turns Hogwarts students to stone.

Harry Potter has never played a sport while flying on a broomstick. He's never worn a Cloak of Invisibility, befriended a giant, or helped hatch a dragon. All Harry knows is a miserable life with the Dursleys, his horrible aunt and uncle, and their abominable son, Dudley. Harry's room is a tiny cupboard under the stairs, and he hasn't had a birthday party in ten years.
But all that is about to change when a mysterious letter arrives by owl messenger: a letter with an invitation to a wonderful place he never dreamed existed. There he finds not only friends, aerial sports, and magic around every corner, but a great destiny that's been waiting for him... if Harry can survive the encounter.

In this fascinating account of Arsene Wenger's reign as manager of Arsenal and the methods he has used to keep the club at the top, John Cross has spoken to everyone from board members to players and backroom staff to build the most complete portrait of the man and his management style, and the club he has inspired for almost 20 years.
When Wenger arrived at Arsenal in 1996, he was little known to fans at the club and many doubted he could bring back the glory days of George Graham. But soon he was transforming the way the team played, melding the famous English defensive spine of Adams, Keown, Dixon, Winterburn and Seaman with a hugely creative foreign attacking spirit, epitomised by Dennis Bergkamp, Thierry Henry and Robert Pires. At the same time, he introduced new ideas on diet, fitness and professionalism, which many players believe extended their careers.
Having won numerous trophies, and led the Invincibles to an unbeaten league season in 2003-04, Wenger then had to help the club through the next stage of their development when they moved from Highbury to the Emirates. Despite the financial constraints he faced, he still managed to keep the club playing in the Champions League year after year while remaining true to his philosophy of how the game should be played. Furthermore, he once again began to build a trophy-winning squad, winning back-to-back FA Cups in 2014 and 2015, that was admired by football fans everywhere.