Machine Learning
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1 Machine Learning
2
3
4
5 John Jane Miko Lee
6 Job Postings for Machine Learning Source: Indeed.com
7 Average Salary by Job Type (USA) Source: Stack Overflow 2017
8
9 Overview 1. Introduction to ML 2. Introduction to R 3. Classification 4. Regression 5. Beyond the Basics
10 About Me Data Science Consultant Education B.S. in Computer Science B.A. in Philosophy Community Public Speaker Pluralsight Author Microsoft MVP ASPInsider Open-source Software
11 How Does This Apply to Me? Make decisions using data Make predictions using data Make recommendations using data Find patterns of interest in data Find anomalies in data Write code that does all these things
12
13
14 Introduction to Machine Learning
15 What is Machine Learning?
16 Artificial Intelligence Machine Learning Statistics
17 f x
18 f x Data Function Prediction
19 f x Data Function Prediction
20 f x Data Function Prediction Cat Dog
21 f x Data Function Prediction Cat Dog
22 f x Data Function Prediction Cat Dog Is cat?
23 f x Data Function Prediction Cat Dog Is cat?
24 f x Data Function Prediction Cat Dog Is cat? Yes
25 Find a question
26 Find a question Prepare the data
27 Find a question Prepare the data Train the model
28 Find a question Prepare the data Train the model Evaluate the model
29 Find a question Prepare the data Deploy the model Train the model Evaluate the model
30 Find a question Monitor the model Prepare the data Deploy the model Train the model Evaluate the model
31 Find a question Monitor the model Prepare the data Deploy the model Train the model Evaluate the model
32 Data
33 Training Data Test
34 ML Algorithm Training Data Test
35 ML Algorithm ML Model Training Data Test
36 ML Algorithm ML Model Training Data Test
37 ML Algorithm ML Model Training Data Test New Data
38 ML Algorithm ML Model Training Prediction Data Test New Data
39 What Can Machine Learning Do?
40 f x 1.23
41 Source: Futurama
42 Introduction to R
43 What is R? Open source Language and environment Numerical and graphical analysis Cross platform
44 What is R? Active development Large user community Modular and extensible extensions
45 FREE
46 FREE
47
48
49
50 Code Demo
51 Classification
52 f x
53 Count of Spam Words Correct Spelling Ratio
54 Count of Spam Words Correct Spelling Ratio
55 Count of Spam Words Correct Spelling Ratio
56 Count of Spam Words Correct Spelling Ratio
57 Count of Spam Words Correct Spelling Ratio
58 Count of Spam Words Correct Spelling Ratio
59 Classification Algorithms k-nearest Neighbor Classifier Decision Tree Classifier Naïve Bayes Classifier Support Vector Machine Neural Network Classifier x2 x1
60 Decision Tree Classifier Supervised learning is age > 9.5? is sex male? Survived Died is family > 2.5? Died Survived
61 Decision Tree Classifier is sex male? Supervised learning Tree of decisions is age > 9.5? Survived Died is family > 2.5? Died Survived
62 Decision Tree Classifier is sex male? Supervised learning Tree of decisions Information gain Died is age > 9.5? is family > 2.5? Survived Died Survived
63 Decision Tree Classifier is sex male? Supervised learning Tree of decisions Information gain Simple and easy Died is age > 9.5? is family > 2.5? Survived Died Survived
64 Titanic Passenger Manifest Name Gender Age Family Survived Elizabeth Allen Female 29 0 Yes Hudson Allison Jr. Male 1 3 Yes Helen Allison Female 2 3 No Hudson Allison Sr. Male 30 3 No Bessie Allison Female 25 3 No
65 is sex male? is age > 9.5? Survived Died is family > 2.5? Died Survived
66 Neural Network Classifier Supervised learning Source: Wikipedia
67 Neural Network Classifier Supervised learning Neurons in a brain Source: Wikipedia
68 Neural Network Classifier Supervised learning Neurons in a brain Complex Source: Wikipedia
69 Neural Network Classifier Supervised learning Neurons in a brain Complex Not transparent Source: Wikipedia
70 Real-World Examples Should we approve this loan? Will this customer buy from us? Should we replace this part? Does this person have cancer? x2 x1
71 Iris Data Set Iris Setosa Iris Versicolor Iris Virginica Photos by Radomił Binek, Danielle Langlois, and Frank Mayfield
72 Iris Data Set Fisher s Iris Data Species Petal Length Petal Width Sepal Length Sepal Width setosa setosa setosa setosa setosa
73 Classification Demo Goal: Predict species based on petal and sepal measurements
74 Regression
75 f x 1.23
76 Sale Price Area
77 Sale Price Area
78 Sale Price Area
79 Regression Algorithms Linear Regression Polynomial Regression Lasso Regression ElasticNet Regression Neural Network Regression x2 x1
80 Simple Linear Regression Relationship
81 Simple Linear Regression Relationship Linear model
82 Simple Linear Regression Relationship Linear model Explanatory variable
83 Simple Linear Regression Relationship Linear model Explanatory variable Outcome variable
84 Simple Linear Regression Linear predictor function
85 Simple Linear Regression Linear predictor function y = m x + b
86 Simple Linear Regression Linear predictor function y = m x + b Parameters estimated
87 Simple Linear Regression Linear predictor function y = m x + b Parameters estimated Relies on assumptions
88 Neural Network Regression Same as before Numeric vs. Categorical Source: Wikipedia
89 Real-World Examples How much profit will we make? What will the price be tomorrow? How many will this person buy? How long until this part fails? x2 x1
90 Regression Demo Goal: Predict petal width of Iris flowers
91 Beyond the Basics
92 This is just the tip of the iceberg! This is just the tip of the iceberg!
93 Find a question Monitor the model Prepare the data Deploy the model Train the model Evaluate the model
94 Creating accurate and robust models is not easy
95 Find a question Monitor the model Prepare the data Deploy the model Train the model Evaluate the model
96 Data are messy Cleaning and Transforming Data
97 Cleaning and Transforming Data Data are messy 80% of work
98 Cleaning and Transforming Data Data are messy 80% of work R helps a lot
99 Cleaning and Transforming Data Data are messy 80% of work R helps a lot Record all steps
100 Goodness of Fit
101 Underfit Goodness of Fit
102 Goodness of Fit Underfit Overfit
103 Goodness of Fit Underfit Good fit Overfit
104 Deep Learning
105 John Jane Miko Lee
106
107 f x 1.23
108 f x 1.23
109 f x 1.23
110 Source: YOLO: Real-Time Object Detection
111 Source: Source: Nvidia
112
113 Source:
114 Source: Pouff Google - Grocery Deep Mind Trip
115 Source: Boston Dynamics
116 Practical Demo Goal: Predict who will survive the Titanic
117 Conclusion
118 Where to Go Next Pluralsight: Data Camp: Coursera: Tensorflow:
119
120
121 Feedback Very important to me! What did you like? What could I improve?
122 Conclusion 1. Introduction to ML 2. Introduction to R 3. Classification 4. Regression 5. Beyond the Basics
123
124 Are you prepared? Is your organization? Is our world prepared?
125
126 Contact Info Matthew Renze Data Science Consultant Renze Consulting Website: Thank You! : )
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