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3 Control Statements
4 Functions
4.9Default
4.14
4.15Passing
4.16Function-Call
4.17Functional-Style
4.18Intro
5 Sequences: Lists and Tuples
5.1Introduction
5.9Searching
5.10Other
5.11Simulating
5.12List
5.13Generator
5.14Filter,
5.15Other
5.16Two-Dimensional
5.17Intro
5.17.1Sample
5.18Wrap-Up
6 Dictionaries and Sets
6.2.1Creating
6.2.2Iterating
6.2.3Basic
6.2.4Dictionary
6.2.5Dictionary
6.2.6Example:
6.2.7Example:
6.2.8Dictionary
6.3.3Mutable
6.3.4Set
6.4Intro
6.4.1How
6.4.2Implementing
7 Array-Oriented Programming
7.7
7.8NumPy
7.9Universal
7.10Indexing
7.11Views:
7.12Deep
7.13Reshaping
8 Strings: A Deeper Look
8.2.2Field
8.2.3Numeric
8.3Concatenating
8.4Stripping
8.5Changing
8.6Comparison
8.7Searching
8.8Replacing
8.9Splitting
8.12.2Replacing
8.12.3Other
8.13Intro
9 Files and Exceptions
9.8.1Division
9.8.2
9.8.3Catching
9.12.1Python
9.12.2Reading
9.12.3Reading
9.12.4Simple
10 Object-Oriented Programming
11 Computer Science Thinking: Recursion,
12 Natural Language Processing(NLP)
12.1Introduction
12.2TextBlob
12.2.1Create a TextBlob
12.2.2Tokenizing Text into Sentences and Words
12.2.3Parts-of-Speech Tagging
12.2.4Extracting Noun Phrases
12.2.5Sentiment Analysis with TextBlob’s Default Sentiment Analyzer 484
12.2.6Sentiment Analysis with the NaiveBayesAnalyzer 486
12.2.7Language Detection and Translation 487
12.2.8Inflection: Pluralization and Singularization 489
12.2.9Spell Checking and Correction 489
12.2.10Normalization: Stemming and Lemmatization 490
12.2.11Word Frequencies 491
12.2.12Getting Definitions, Synonyms and Antonyms from WordNet 492
12.2.13Deleting Stop Words 494
12.2.14n-grams 496
12.3Visualizing Word Frequencies with Bar Charts and Word Clouds 497
12.3.1Visualizing Word Frequencies with Pandas 497
12.3.2Visualizing Word Frequencies with Word Clouds 500
12.4Readability Assessment with Textatistic 503
12.5Named Entity Recognition with spaCy 505
12.6Similarity Detection with spaCy 507
12.7Other NLP Libraries and Tools 509
12.8Machine Learning and Deep Learning Natural Language Applications 509
12.9Natural Language Datasets 510
12.10Wrap-Up 510
13 Data Mining Twitter
13.8Getting
13.9Introduction
14 IBM Watson and Cognitive Computing
15 Machine Learning: Classification, Regression and Clustering
15.1Introduction to Machine Learning 594
15.1.1Scikit-Learn 595
15.1.2Types of Machine Learning 596
15.1.3Datasets Bundled with Scikit-Learn 598
15.1.4Steps in a Typical Data Science Study 599
15.2Case Study: Classification with k-Nearest Neighbors and the Digits Dataset, Part 1 599
15.2.1k-Nearest Neighbors Algorithm 601
15.2.2Loading the Dataset 602
15.2.3Visualizing the Data 606
15.2.4Splitting the Data for Training and Testing 608
15.2.5Creating the Model 609
15.2.6Training the Model 610
15.2.7Predicting Digit Classes 610
15.3Case Study: Classification with k-Nearest Neighbors and the Digits Dataset, Part 2 612
15.3.1Metrics for Model Accuracy 612
15.3.2K-Fold Cross-Validation 616
15.3.3Running Multiple Models to Find the Best One 617
15.3.4Hyperparameter Tuning 619
15.4Case Study: Time Series and Simple Linear Regression 620
15.5Case Study: Multiple Linear Regression with the California Housing Dataset 625
15.5.1Loading the Dataset 626
15.5.2Exploring the Data with Pandas 628
15.5.3Visualizing the Features 630
15.5.4Splitting the Data for Training and Testing 634
15.5.5Training the Model 634
15.5.6Testing the Model 635
15.5.7Visualizing the Expected vs. Predicted Prices 636
15.5.8Regression Model Metrics 637
15.5.9Choosing the Best Model 638
15.6 Case Study: Unsupervised Machine Learning, Part 1— Dimensionality Reduction639
15.7 Case Study: Unsupervised Machine Learning, Part 2— k-Means Clustering642
15.7.1Loading the Iris Dataset 644
15.7.2Exploring the Iris Dataset: Descriptive Statistics with Pandas 646
15.7.3Visualizing the Dataset with a Seaborn pairplot 647
15.7.4Using a KMeans Estimator 650
15.7.5Dimensionality Reduction with Principal Component Analysis 652
15.7.6Choosing the Best Clustering Estimator 655
15.8Wrap-Up 656
16.5Tensors
16.6 Convolutional Neural Networks for Vision; Multi-Classification with the
Dataset676 16.6.1Loading
16.8ConvnetJS:
16.9Recurrent
17 Big Data: Hadoop, Spark, NoSQL and IoT
17.3NoSQL and NewSQL Big-Data Databases: A Brief Tour 741
17.3.1NoSQL Key–Value Databases
17.3.2NoSQL Document Databases
17.3.3NoSQL Columnar Databases
17.3.4NoSQL Graph Databases
17.3.5NewSQL Databases 743
17.4Case Study: A MongoDB JSON Document Database 744
17.4.1Creating the MongoDB Atlas Cluster
17.4.2Streaming Tweets into MongoDB
17.5Hadoop
17.5.1Hadoop Overview
17.5.2Summarizing Word Lengths in Romeo and Juliet via MapReduce 758
17.5.3Creating an Apache Hadoop Cluster in Microsoft Azure HDInsight 758
17.5.4Hadoop Streaming 760
17.5.5Implementing the Mapper 760
17.5.6Implementing the Reducer 761
17.5.7Preparing to Run the MapReduce Example 762
17.5.8Running the MapReduce Job
17.6.1Spark Overview
17.6.2Docker and the Jupyter Docker Stacks
17.6.3Word Count with Spark 770
17.6.4Spark Word Count on Microsoft Azure 773
17.7 Spark Streaming: Counting Twitter Hashtags Using the pyspark-notebook Docker Stack777
17.7.1Streaming Tweets to a Socket 777
17.7.2Summarizing Tweet Hashtags; Introducing Spark SQL 780
17.8Internet of Things and Dashboards 786
17.8.1Publish and Subscribe 788
17.8.2Visualizing a PubNub Sample Live Stream with a Freeboard Dashboard 788
17.8.3Simulating an Internet-Connected Thermostat in Python 790
17.8.4Creating the Dashboard with Freeboard.io 792
17.8.5Creating a Python PubNub Subscriber 794
17.9Wrap-Up 798
“There’s gold in them thar hills!”1
Preface
For many decades, some powerful trends have been in place. Computer hardware has rapidly been getting faster, cheaper and smaller. Internet bandwidth (that is, its information carrying capacity) has rapidly been getting larger and cheaper. And quality computer software has become ever more abundant and essentially free or nearly free through the “open source” movement. Soon, the “Internet of Things” will connect tens of billions of devices of every imaginable type. These will generate enormous volumes of data at rapidly increasing speeds and quantities.
Not so many years ago, if people had told us that we’d write a college-level introductory programming textbook with words like “Big Data” and “Cloud” in the title and a graphic of a multicolored elephant (emblematic of “big”) on the cover, our reaction might have been, “Huh?” And, if they’d told us we’d include AI (for artificial intelligence) in the title, we might have said, “Really? Isn’t that pretty advanced stuff for novice programmers?”
If people had said, we’d include “Data Science” in the title, we might have responded, “Isn’t data already included in the domain of ‘Computer Science’? Why would we need a separate academic discipline for it?” Well, in programming today, the latest innovations are “all about the data”—data science, data analytics, big data, relational databases (SQL), and NoSQL and NewSQL databases.
So, here we are! Welcome to Intro to Python for Computer Science and Data Science: Learning to Program with AI, Big Data and the Cloud
In this book, you’ll learn hands-on with today’s most compelling, leading-edge computing technologies—and, as you’ll see, with an easily tunable mix of computer science and data science appropriate for introductory courses in those and related disciplines. And, you’ll program in Python—one of the world’s most popular languages and the fastest growing among them. In this Preface, we present the “soul of the book.”
Professional programmers often quickly discover that they like Python. They appreciate its expressive power, readability, conciseness and interactivity. They like the world of open-source software development that’s generating an ever-growing base of reusable software for an enormous range of application areas.
Whether you’re an instructor, a novice student or an experienced professional programmer, this book has much to offer you. Python is an excellent first programming language for novices and is equally appropriate for developing industrial-strength applications. For the novice, the early chapters establish a solid programming foundation.
We hope you’ll find Intro to Python for Computer Science and Data Science educational, entertaining and challenging. It has been a joy to work on this project.
1.Source unknown, frequently misattributed to Mark Twain.
Another random document with no related content on Scribd:
„ position of, 88
Defence practice, 90
General remarks, 84
„ rules, 85
Meeting attack by cavalry, 92
Reconnaissance practice, 91
Retirements, 91
Scouting, 93
Scouts, duties of, 93
„ training of, 94
Shelter trench exercise, 95
Skirmishers, duties of, 89
Skirmishing, inspection in, 95
Squad drill—
Method of instruction of the recruit, 29
Words of command, 30
With intervals—
Dressing, 32
Formation, 31
Position of attention, 31
Saluting, 34
Standing at ease, 32
Turnings, 33
Marching—
Changing step, 39
Double march, 39
Drum and pace stick, 36
Halt, 37
Length of pace and time, 35
Marking time, 38
Position in marching, 36
Quick march, 37
Side step, 40
Stepping back, 38
„ short, 39 „ out, 37
Turning on the march, 40
Single rank—
Changing direction, 45
„ as in file, 46
Diagonal march, 43
Dressing when halted, 42
Formation, 41
Marching as in file, forming up into squad, 47
„ „ 46
„ in squad, 42
„ with arms, 47
Turnings, 42
In two ranks—
Changing direction and forming up, 50
„ ranks, 49
Diagonal march, 49
Dismissing with or without arms, 53
Dressing, 48
Formation, 48
„ of fours, 50
Fours changing direction and forming squad, 53
Marching in squad and in file, 49
Obstacles, 53
Passage of a defile, 53
Squad leaders, duties of, 162
Square, brigade forming, 122
„ forming, 120
Subalterns, duties of, company in defence, 162
Surprises, 140
Supply of ammunition in the field, 165
Syllabus of training (recruit), 21
Training, course of, skirmishing, 54
„ preliminary, skirmishing, 55
„ of scouts, 94
„ of non-commissioned officers, 179
„ annual course. SeeAnnual Course.
„ recruits, 21
„ syllabus of recruits, 22 Transport of ammunition in the field, 165 Turnings. SeeSquad Drill.
LONDON: PRINTED FOR HIS MAJESTY’S STATIONERY OFFICE, BY HARRISON AND SONS, ST. MARTIN’S LANE, PRINTERS IN ORDINARY TO HIS MAJESTY.
(Wt. w 27691 150,000 2 | 05 H & S 5749)
FOOTNOTES:
[1] In marching order without the rifle the arms will be retained as in the position of Attention.
[2] The number of paces to which men are to extend is to be communicated by word of mouth.
[3] This signal denotes extension from the centre. If the extension is to be made to the right, finish the signal by pointing to the right. If the extension is to be made to the left, finish the signal by pointing to the left.
[4] This signal denotes “Close on the centre.” If it is desired to close on the right, finish the signal by pointing to the right. If the close is to be on the left point to the left.
NOTE. All signals should be made with whichever arm will show most clearly what is meant.
[5] Rifle regiments will drill in close order at the Trail. On the command QUICK (or DOUBLE) MARCH, the men will Trail arms without further word of command, and will halt and stand at ease on the word or signal Halt.
[6] When a company without arms is inspected, section commanders will close up the rear rank on completion of inspection of their sections, giving the command CLOSE RANKS. MARCH.
[7] When constructing trenches by night, tracing tapes are used to show the line of the proposed trench.
[8] With tripod equipment, the machine gun detachment will include two pack animals, each of which will carry 7 boxes of ammunition (250 rounds to the box).
[9] Recruits, as soon as their training as such is completed, are to take their place in the ranks irrespective of the season of the year.
[10] In the following sections dealing with ceremonial, including guard duties, the command to slope arms and fix bayonets will not apply to men of Rifle Regiments, who will
remain at the Order when halted, will present arms from the Order without fixing bayonets, and will march past at the Trail.
[11] The term “corps,” when used with reference to troops, is intended to designate troops which are not allotted to any particular field unit.
[12] In coming to the Engage from the Slope, seize the rifle with the right hand at the small and come to the Engage.
Transcriber’s Notes:
1. Obvious printers’, punctuation and spelling errors have been corrected silently.
2. Where hyphenation is in doubt, it has been retained as in the original.
3. Some hyphenated and non-hyphenated versions of the same words have been retained as in the original.
*** END OF THE PROJECT GUTENBERG EBOOK INFANTRY TRAINING, 1905 ***
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