azure ml studio · 2017-01-31 · azure ml studio public gallery 12 add picture of gallery don’t...
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Azure ML StudioOverview for Data Engineers
& Data Scientists
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Rakesh Soni, Big Data Practice Director
Randi R. Ludwig, Ph.D., Data Scientist
Daniel Lai, Data Scientist
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Intersys Company Summary
Privately held IT services firm 150+ consultants spanning the full IT space Leverage a local, national and/or global model as
appropriate for each customer and engagement
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Retail and Hospitality Financial Services Healthcare High Tech
Manufacturing Media and Advertising
Overview
Key Industries Core Values Be Accountable Bring Excellence Be Authentic Be in Service to
Others
NYC
AustinPhoenix
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Core Practice Capabilities
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Big Data & Analytics
Big Data
Enterprise Search
Business Intelligence
Analytics & Data Science
Information Management
Application ServicesApplication
Development
Modern Web
Mobility
Cloud
DevOps / Agile
Technology Staffing
Infrastructure
Project Management
Packaged Solutions
Quality Assurance
Cloud
AssessmentProject & Program Management Quality Assurance Strategy &
Roadmap
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Agenda
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Intersys Overview
Machine Learning
Azure Machine Learning Studio
Main Features of Azure Machine Learning Studio
Demo 1 – Predicting Income Category
Demo 2 – Predicting Patient Readmission
Q&A
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Machine Learning – What Is It?
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Machine Learning All Around Us
Strategic Game PlayReinforced learning to take actions with the highest reward
Autonomous TechnologyTraining computers to be make intelligent and intuitive decisions
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Credit: Google Deep Mind, https://www.youtube.com/watch?v=vFr3K2DORc8
Credit: BBC News, http://www.bbc.com/news/technology-37117831
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Machine Learning in Real Life
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Optimize Business Decisions Real time insights into customer behavior
Credit: UiBS Microsoft Partnerhttp://www.uibs.net/uibscloud-cloud-circle-partner
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Machine Learning – How Does it Work?
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• Data: examples used to train and validate model
• Model: the system that makes predictions or classifications
• Parameters: the signals or factors used by the model to form its decisions
• Learner: the system that adjusts the parameters — and in turn the model —by looking at differences in
predictions versus actual outcome.
Credit: Google Research, "Machine Learning 101"Reported at: https://martechtoday.com/how-machine-learning-works-150366
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Azure Machine Learning Studio
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Azure ML Studio – What is it?
Collaborative, drag-and-drop, fully managed cloud platform Build, test, and deploy
predictive analytics Publish models as web
services to be consumed by custom apps or BI tools.
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Azure ML Studio Public Gallery
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Add picture of gallery
Don’t want to build a machine learning model from scratch? Avoid reinventing the wheel by browsing the public gallery for existing models that meet your needs.
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Azure ML Studio Workspace
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To have full control, open your own Experiment.For any part of the process you can use built in features. Find these via the search bar or browse the categories shown.Once you’ve found the module you need, just drag and drop onto the workspace.
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Data Import And Export Options
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Bring in data in many forms. Export wherever you need it.
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Easy To Create And Visualize Workflow
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Easy to follow workflow for creating and sharing.As you’re creating your model, you can see dependencies in your process.When sharing your results, the workflow tells your story.
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Dataset Statistics At Every Step
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Includes quick column statistics on your whole datasetOnce your data is loaded into Azure ML, you can explore overall distributions of each feature.You can also quickly identify columns with many missing values.
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Algorithm Selection
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Accuracy Training time Linearity ParametersLogistic Regression ● ● 5Support Vector Machine* ○ ● 5Neural Network ● 9Boosted decision tree† ● ○ 6Decision forest ● ○ 6
● Good performance
○ Moderate performance
Classification
Accuracy Training time Linearity ParametersLogistic Regression ● ● 4Bayesian Linear Regression ○ ● 2Neural Network ● 9Boosted decision tree† ● ○ 5Decision forest ● ○ 6
Regression
Accuracy Training time Linearity ParametersPrincipal Component Analysis ○ ● 3K-means Clustering ○ ● 4
Anomaly Detection
* Good for large feature sets
† Large memory footprint
Credit: Brandon Rohrer, azure.microsoft.com
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Publish Output As A Web Service and BI Visualization
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Azure Machine Learning Demo
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Demo 2 – Predicting Patient Readmission
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Azure Machine Learning Studio Summary
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Azure ML – Summary
Interactive & visual workspace Various data sources supported: SQL Server, HIVE tables, CSV
file etc. Dataset statistics and easy exploration Data cleaning & transformation Many modeling algorithms included out of the box SQL/R/Python code can be included in workflow Many built-in ways to evaluate and compare models using
standard performance metrics
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Resources
Microsoft's provided documentation is quite thorough and helpful:https://azure.microsoft.com/en-us/documentation/services/machine-learning/
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Thank you. Any questions?
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Q&APlease submit your questions into the chat field.
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Demo Resource Slides
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Demo 1: This is model that predicts whether a person earns > $50k.
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Here we show how to build a model from scratch, including training the model, predicting values for the test set, and evaluating results.
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Input your data
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Summary statistics
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How to Clean Missing Data
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How to Limit the Number of Features in Your Model
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Splitting into Training/Test Sets
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Choosing a Model
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Training the Model
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Which Features are Most Predictive?
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Which Features are Most Predictive?
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Predicting Values for Test Data
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Check Predictions (Scored Labels)
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Evaluate Model
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Check Model Accuracy, Etc.
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End of Demo 1
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Demo 2: This model predicts whether a patient will be readmitted to a hospital for further treatment.
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This model considers a variety of strong machine learning algorithms. It then tunes the strongest model to be more efficient, evaluation of prediction results, and implements custom code in from R, Python, and SQL for further visualization and examination of data.
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Explore the Dataset
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Impute Missing Values
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Compare Models: Decision Jungle
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Compare Models: Boosted Decision Tree
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Compare Models: Logistic Regression
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Compare Models: Neural Network
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Cross Validation Results: Variation in Accuracy for All Algorithms
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ROC Chart comparison for models
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Move Forward with Most Accurate Model
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How to Cross Validate a Tuned Model
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Assign Folds
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Set Model Parameter Ranges
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Tune Model Parameters
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Use Model to Predict Values for Test Set
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Visualize Predicted Values
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Permute Features to Find Most Important
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Find Features Most Influential to the Model
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Can Export Results for Multiple Uses
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Export CSV for debugging in notebooks
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Sample R Notebook
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SQL scripts
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Find optimal cutoff in R script
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R result
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Python script for further visualizations
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Python Visualization
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Evaluate Final Model
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Results
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