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© 2015, Amazon Web Services, Inc. or its Affiliates. All rights reserved.
John Chang
Ecosystem Solutions Architect
September 2016
Build a Recommendation Engine and
Use Amazon ML in Real Time
Agenda
• Machine learning and the data ecosystem
• Smart applications by example (and counterexample)
• Amazon Machine Learning (Amazon ML) features and
benefits
• Developing with Amazon ML
• Q&A
Three types of data-driven development
Retrospective
analysis and
reporting
Amazon Redshift,
Amazon RDS
Amazon S3
Amazon EMR
Three types of data-driven development
Retrospective
analysis and
reporting
Here-and-now
real-time processing
and dashboards
Amazon Kinesis
Amazon EC2
AWS Lambda
Amazon Redshift,
Amazon RDS
Amazon S3
Amazon EMR
Three types of data-driven development
Retrospective
analysis and
reporting
Here-and-now
real-time processing
and dashboards
Predictions
to enable smart
applications
Amazon Kinesis
Amazon EC2
AWS Lambda
Amazon Redshift,
Amazon RDS
Amazon S3
Amazon EMR
Machine learning and smart applications
Machine learning is the technology that
automatically finds patterns in your data and
uses them to make predictions for new data
points as they become available.
Machine learning and smart applications
Machine learning is the technology that
automatically finds patterns in your data and
uses them to make predictions for new data
points as they become available.
Your data + machine learning = smart applications
Smart applications by example
Based on what you
know about the user:
Will they use your
product?
Smart applications by example
Based on what you
know about the user:
Will they use your
product?
Based on what you
know about an order:
Is this order
fraudulent?
Smart applications by example
Based on what you
know about the user:
Will they use your
product?
Based on what you
know about an order:
Is this order
fraudulent?
Based on what you know
about a news article:
What other articles are
interesting?
And a few more examples…
Fraud detection Detecting fraudulent transactions, filtering spam emails,
flagging suspicious reviews,…
Personalization Recommending content, predictive content loading,
improving user experience,…
Targeted marketing Matching customers and offers, choosing marketing
campaigns, cross-selling and up-selling,…
Content classification Categorizing documents, matching hiring managers and
resumes,…
Churn prediction Finding customers who are likely to stop using the
service, upgrade targeting,…
Customer support Predictive routing of customer emails, social media
listening,…
Smart applications by counterexample
Dear Alex,
This awesome quadcopter is on sale
for just $49.99!
Smart applications by counterexample
SELECT c.ID
FROM customers c
LEFT JOIN orders o
ON c.ID = o.customer
GROUP BY c.ID
HAVING o.date > GETDATE() – 30
We can start by sending
the offer to all customers
who placed an order in
the last 30 days
Smart applications by counterexample
SELECT c.ID
FROM customers c
LEFT JOIN orders o
ON c.ID = o.customer
GROUP BY c.ID
HAVING O.CATEGORY = ‘TOYS’
AND o.date > GETDATE() – 30
…let’s narrow it down to
just customers who
bought toys
Smart applications by counterexample
SELECT c.ID
FROM customers c
LEFT JOIN orders o
ON c.ID = o.customer
LEFT JOIN PRODUCTS P
ON P.ID = O.PRODUCT
GROUP BY c.ID
HAVING o.category = ‘toys’
AND ((P.DESCRIPTION LIKE ‘%HELICOPTER%’
AND O.DATE > GETDATE() - 60)
OR (COUNT(*) > 2
AND SUM(o.price) > 200
AND o.date > GETDATE() – 30)
)
…and expand the query
to customers who
purchased other toy
helicopters recently, or
made several expensive
toy purchases
Smart applications by counterexample
SELECT c.ID
FROM customers c
LEFT JOIN orders o
ON c.ID = o.customer
LEFT JOIN products p
ON p.ID = o.product
GROUP BY c.ID
HAVING o.category = ‘toys’
AND ((p.description LIKE ‘%COPTER%’
AND o.date > GETDATE() - 60)
OR (COUNT(*) > 2
AND SUM(o.price) > 200
AND o.date > GETDATE() – 30)
)
…but what about
quadcopters?
Smart applications by counterexample
SELECT c.ID
FROM customers c
LEFT JOIN orders o
ON c.ID = o.customer
LEFT JOIN products p
ON p.ID = o.product
GROUP BY c.ID
HAVING o.category = ‘toys’
AND ((p.description LIKE ‘%copter%’
AND o.date > GETDATE() - 120)
OR (COUNT(*) > 2
AND SUM(o.price) > 200
AND o.date > GETDATE() – 30)
)
…maybe we should go
back further in time
Smart applications by counterexample
SELECT c.ID
FROM customers c
LEFT JOIN orders o
ON c.ID = o.customer
LEFT JOIN products p
ON p.ID = o.product
GROUP BY c.ID
HAVING o.category = ‘toys’
AND ((p.description LIKE ‘%copter%’
AND o.date > GETDATE() - 120)
OR (COUNT(*) > 2
AND SUM(o.price) > 200
AND o.date > GETDATE() – 40)
)
…tweak the query more
Smart applications by counterexample
SELECT c.ID
FROM customers c
LEFT JOIN orders o
ON c.ID = o.customer
LEFT JOIN products p
ON p.ID = o.product
GROUP BY c.ID
HAVING o.category = ‘toys’
AND ((p.description LIKE ‘%copter%’
AND o.date > GETDATE() - 120)
OR (COUNT(*) > 2
AND SUM(o.price) > 150
AND o.date > GETDATE() – 40)
)
…again
Smart applications by counterexample
SELECT c.ID
FROM customers c
LEFT JOIN orders o
ON c.ID = o.customer
LEFT JOIN products p
ON p.ID = o.product
GROUP BY c.ID
HAVING o.category = ‘toys’
AND ((p.description LIKE ‘%copter%’
AND o.date > GETDATE() - 90)
OR (COUNT(*) > 2
AND SUM(o.price) > 150
AND o.date > GETDATE() – 40)
)
…and again
Smart applications by counterexample
SELECT c.ID
FROM customers c
LEFT JOIN orders o
ON c.ID = o.customer
LEFT JOIN products p
ON p.ID = o.product
GROUP BY c.ID
HAVING o.category = ‘toys’
AND ((p.description LIKE ‘%copter%’
AND o.date > GETDATE() - 90)
OR (COUNT(*) > 2
AND SUM(o.price) > 150
AND o.date > GETDATE() – 40)
)
Use machine learning
technology to learn your
business rules from data!
Why aren’t there more smart applications?
1. Machine learning expertise is rare.
2. Building and scaling machine learning technology is
hard.
3. Closing the gap between models and applications is
time-consuming and expensive.
Building smart applications today
Expertise Technology Operationalization
Limited supply of
data scientists
Many choices, few
mainstays
Complex and error-prone
data workflows
Expensive to hire
or outsource
Difficult to use and scale Custom platforms and
APIs
Many moving pieces lead
to custom solutions every
time
Reinventing the model
lifecycle management
wheel
What if there were a better
way?
Introducing Amazon Machine Learning
Easy-to-use, managed machine learning
service built for developers
Robust, powerful machine learning
technology based on Amazon’s internal
systems
Create models using your data already
stored in the AWS cloud
Deploy models to production in seconds
Easy-to-use and developer-friendly
Use the intuitive, powerful service console to build
and explore your initial models
• Data retrieval
• Model training, quality evaluation, fine-tuning
• Deployment and management
Automate model lifecycle with fully featured APIs and
SDKs
• Java, Python, .NET, JavaScript, Ruby, PHP
Easily create smart iOS and Android applications with
AWS Mobile SDK
Powerful machine learning technology
Based on Amazon’s battle-hardened internal systems
Not just the algorithms:
• Smart data transformations
• Input data and model quality alerts
• Built-in industry best practices
Grows with your needs
• Train on up to 100 GB of data
• Generate billions of predictions
• Obtain predictions in batches or real-time
Integrated with the AWS data ecosystem
Access data that is stored in Amazon S3,
Amazon Redshift, or MySQL databases in
Amazon RDS
Output predictions to Amazon S3 for easy
integration with your data flows
Use AWS Identity and Access Management
(IAM) for fine-grained data access permission
policies
Fully-managed model and prediction services
End-to-end service, with no servers to provision
and manage
One-click production model deployment
Programmatically query model metadata to
enable automatic retraining workflows
Monitor prediction usage patterns with Amazon
CloudWatch metrics
Pay-as-you-go and inexpensive
Data analysis, model training, and
evaluation: $0.42/instance hour
Batch predictions: $0.10/1000
Real-time predictions: $0.10/1000
+ hourly capacity reservation charge
Three supported types of predictions
Binary classification
Predict the answer to a Yes/No question
Multiclass classification
Predict the correct category from a list
Regression
Predict the value of a numeric variable
Train
model
Evaluate and
optimize
Retrieve
predictions
1 2 3
Building smart applications with Amazon ML
Train
model
Evaluate and
optimize
Retrieve
predictions
1 2 3
Building smart applications with Amazon ML
- Create a datasource object pointing to your data
- Explore and understand your data
- Transform data and train your model
Create a datasource object
>>> import boto
>>> ml = boto.connect_machinelearning()
>>> ds = ml.create_data_source_from_s3(
data_source_id = ’my_datasource',
data_spec = {
'DataLocationS3': 's3://bucket/input/data.csv',
'DataSchemaLocationS3': 's3://bucket/input/data.schema',
’compute_statistics’: True } )
Explore and understand your data
Train your model
>>> import boto
>>> ml = boto.connect_machinelearning()
>>> model = ml.create_ml_model(
ml_model_id = ’my_model',
ml_model_type = 'REGRESSION',
training_data_source_id = 'my_datasource')
Train
model
Evaluate and
optimize
Retrieve
predictions
1 2 3
Building smart applications with Amazon ML
- Measure and understand model quality
- Adjust model interpretation
Explore model quality
Fine-tune model interpretation
Fine-tune model interpretation
Train
model
Evaluate and
optimize
Retrieve
predictions
1 2 3
Building smart applications with Amazon ML
- Batch predictions
- Real-time predictions
Batch predictions
Asynchronous, large-volume prediction generation
Request through service console or API
Best for applications that deal with batches of data records
>>> import boto
>>> ml = boto.connect_machinelearning()
>>> model = ml.create_batch_prediction(
batch_prediction_id = 'my_batch_prediction’,
batch_prediction_data_source_id = ’my_datasource’,
ml_model_id = ’my_model',
output_uri = 's3://examplebucket/output/’)
Real-time predictions
Synchronous, low-latency, high-throughput prediction generation
Request through service API, server, or mobile SDKs
Best for interaction applications that deal with individual data records
>>> import boto
>>> ml = boto.connect_machinelearning()
>>> ml.predict(
ml_model_id = ’my_model',
predict_endpoint = ’example_endpoint’,
record = {’key1':’value1’, ’key2':’value2’})
{
'Prediction': {
'predictedValue': 13.284348,
'details': {
'Algorithm': 'SGD',
'PredictiveModelType': 'REGRESSION’
}
}
}
Architecture patterns for
smart applications
Get predictions with
Amazon ML batch API
Process data with
EMR
Raw data in S3
Aggregated data
in S3
Predictions
in S3 Your application
Batch predictions with EMR
Structured data
In Amazon Redshift
Load predictions into
Amazon Redshift
- or -
Read prediction results
directly from S3
Predictions
in S3
Get predictions with
Amazon ML batch API
Your application
Batch predictions with Amazon Redshift
Your application
Get predictions with
Amazon ML real-time API
Amazon ML service
Real-time predictions for interactive
applications
Your application Amazon
DynamoDB
+
Trigger events with Lambda
+
Get predictions with
Amazon ML real-time API
Adding predictions to an existing data flow
Recommendation engine
Amazon S3 Amazon Redshift
Amazon ML
Data Cleansing
Raw Data
Train model
Build
Models
S3 Static
Website
Predictions
Q&A
http://aws.amazon.com/machine-learning
Remember to complete
your evaluations!

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使用Amazon Machine Learning 建立即時推薦引擎

  • 1. © 2015, Amazon Web Services, Inc. or its Affiliates. All rights reserved. John Chang Ecosystem Solutions Architect September 2016 Build a Recommendation Engine and Use Amazon ML in Real Time
  • 2. Agenda • Machine learning and the data ecosystem • Smart applications by example (and counterexample) • Amazon Machine Learning (Amazon ML) features and benefits • Developing with Amazon ML • Q&A
  • 3. Three types of data-driven development Retrospective analysis and reporting Amazon Redshift, Amazon RDS Amazon S3 Amazon EMR
  • 4. Three types of data-driven development Retrospective analysis and reporting Here-and-now real-time processing and dashboards Amazon Kinesis Amazon EC2 AWS Lambda Amazon Redshift, Amazon RDS Amazon S3 Amazon EMR
  • 5. Three types of data-driven development Retrospective analysis and reporting Here-and-now real-time processing and dashboards Predictions to enable smart applications Amazon Kinesis Amazon EC2 AWS Lambda Amazon Redshift, Amazon RDS Amazon S3 Amazon EMR
  • 6. Machine learning and smart applications Machine learning is the technology that automatically finds patterns in your data and uses them to make predictions for new data points as they become available.
  • 7. Machine learning and smart applications Machine learning is the technology that automatically finds patterns in your data and uses them to make predictions for new data points as they become available. Your data + machine learning = smart applications
  • 8. Smart applications by example Based on what you know about the user: Will they use your product?
  • 9. Smart applications by example Based on what you know about the user: Will they use your product? Based on what you know about an order: Is this order fraudulent?
  • 10. Smart applications by example Based on what you know about the user: Will they use your product? Based on what you know about an order: Is this order fraudulent? Based on what you know about a news article: What other articles are interesting?
  • 11. And a few more examples… Fraud detection Detecting fraudulent transactions, filtering spam emails, flagging suspicious reviews,… Personalization Recommending content, predictive content loading, improving user experience,… Targeted marketing Matching customers and offers, choosing marketing campaigns, cross-selling and up-selling,… Content classification Categorizing documents, matching hiring managers and resumes,… Churn prediction Finding customers who are likely to stop using the service, upgrade targeting,… Customer support Predictive routing of customer emails, social media listening,…
  • 12. Smart applications by counterexample Dear Alex, This awesome quadcopter is on sale for just $49.99!
  • 13. Smart applications by counterexample SELECT c.ID FROM customers c LEFT JOIN orders o ON c.ID = o.customer GROUP BY c.ID HAVING o.date > GETDATE() – 30 We can start by sending the offer to all customers who placed an order in the last 30 days
  • 14. Smart applications by counterexample SELECT c.ID FROM customers c LEFT JOIN orders o ON c.ID = o.customer GROUP BY c.ID HAVING O.CATEGORY = ‘TOYS’ AND o.date > GETDATE() – 30 …let’s narrow it down to just customers who bought toys
  • 15. Smart applications by counterexample SELECT c.ID FROM customers c LEFT JOIN orders o ON c.ID = o.customer LEFT JOIN PRODUCTS P ON P.ID = O.PRODUCT GROUP BY c.ID HAVING o.category = ‘toys’ AND ((P.DESCRIPTION LIKE ‘%HELICOPTER%’ AND O.DATE > GETDATE() - 60) OR (COUNT(*) > 2 AND SUM(o.price) > 200 AND o.date > GETDATE() – 30) ) …and expand the query to customers who purchased other toy helicopters recently, or made several expensive toy purchases
  • 16. Smart applications by counterexample SELECT c.ID FROM customers c LEFT JOIN orders o ON c.ID = o.customer LEFT JOIN products p ON p.ID = o.product GROUP BY c.ID HAVING o.category = ‘toys’ AND ((p.description LIKE ‘%COPTER%’ AND o.date > GETDATE() - 60) OR (COUNT(*) > 2 AND SUM(o.price) > 200 AND o.date > GETDATE() – 30) ) …but what about quadcopters?
  • 17. Smart applications by counterexample SELECT c.ID FROM customers c LEFT JOIN orders o ON c.ID = o.customer LEFT JOIN products p ON p.ID = o.product GROUP BY c.ID HAVING o.category = ‘toys’ AND ((p.description LIKE ‘%copter%’ AND o.date > GETDATE() - 120) OR (COUNT(*) > 2 AND SUM(o.price) > 200 AND o.date > GETDATE() – 30) ) …maybe we should go back further in time
  • 18. Smart applications by counterexample SELECT c.ID FROM customers c LEFT JOIN orders o ON c.ID = o.customer LEFT JOIN products p ON p.ID = o.product GROUP BY c.ID HAVING o.category = ‘toys’ AND ((p.description LIKE ‘%copter%’ AND o.date > GETDATE() - 120) OR (COUNT(*) > 2 AND SUM(o.price) > 200 AND o.date > GETDATE() – 40) ) …tweak the query more
  • 19. Smart applications by counterexample SELECT c.ID FROM customers c LEFT JOIN orders o ON c.ID = o.customer LEFT JOIN products p ON p.ID = o.product GROUP BY c.ID HAVING o.category = ‘toys’ AND ((p.description LIKE ‘%copter%’ AND o.date > GETDATE() - 120) OR (COUNT(*) > 2 AND SUM(o.price) > 150 AND o.date > GETDATE() – 40) ) …again
  • 20. Smart applications by counterexample SELECT c.ID FROM customers c LEFT JOIN orders o ON c.ID = o.customer LEFT JOIN products p ON p.ID = o.product GROUP BY c.ID HAVING o.category = ‘toys’ AND ((p.description LIKE ‘%copter%’ AND o.date > GETDATE() - 90) OR (COUNT(*) > 2 AND SUM(o.price) > 150 AND o.date > GETDATE() – 40) ) …and again
  • 21. Smart applications by counterexample SELECT c.ID FROM customers c LEFT JOIN orders o ON c.ID = o.customer LEFT JOIN products p ON p.ID = o.product GROUP BY c.ID HAVING o.category = ‘toys’ AND ((p.description LIKE ‘%copter%’ AND o.date > GETDATE() - 90) OR (COUNT(*) > 2 AND SUM(o.price) > 150 AND o.date > GETDATE() – 40) ) Use machine learning technology to learn your business rules from data!
  • 22. Why aren’t there more smart applications? 1. Machine learning expertise is rare. 2. Building and scaling machine learning technology is hard. 3. Closing the gap between models and applications is time-consuming and expensive.
  • 23. Building smart applications today Expertise Technology Operationalization Limited supply of data scientists Many choices, few mainstays Complex and error-prone data workflows Expensive to hire or outsource Difficult to use and scale Custom platforms and APIs Many moving pieces lead to custom solutions every time Reinventing the model lifecycle management wheel
  • 24. What if there were a better way?
  • 25. Introducing Amazon Machine Learning Easy-to-use, managed machine learning service built for developers Robust, powerful machine learning technology based on Amazon’s internal systems Create models using your data already stored in the AWS cloud Deploy models to production in seconds
  • 26. Easy-to-use and developer-friendly Use the intuitive, powerful service console to build and explore your initial models • Data retrieval • Model training, quality evaluation, fine-tuning • Deployment and management Automate model lifecycle with fully featured APIs and SDKs • Java, Python, .NET, JavaScript, Ruby, PHP Easily create smart iOS and Android applications with AWS Mobile SDK
  • 27. Powerful machine learning technology Based on Amazon’s battle-hardened internal systems Not just the algorithms: • Smart data transformations • Input data and model quality alerts • Built-in industry best practices Grows with your needs • Train on up to 100 GB of data • Generate billions of predictions • Obtain predictions in batches or real-time
  • 28. Integrated with the AWS data ecosystem Access data that is stored in Amazon S3, Amazon Redshift, or MySQL databases in Amazon RDS Output predictions to Amazon S3 for easy integration with your data flows Use AWS Identity and Access Management (IAM) for fine-grained data access permission policies
  • 29. Fully-managed model and prediction services End-to-end service, with no servers to provision and manage One-click production model deployment Programmatically query model metadata to enable automatic retraining workflows Monitor prediction usage patterns with Amazon CloudWatch metrics
  • 30. Pay-as-you-go and inexpensive Data analysis, model training, and evaluation: $0.42/instance hour Batch predictions: $0.10/1000 Real-time predictions: $0.10/1000 + hourly capacity reservation charge
  • 31. Three supported types of predictions Binary classification Predict the answer to a Yes/No question Multiclass classification Predict the correct category from a list Regression Predict the value of a numeric variable
  • 32. Train model Evaluate and optimize Retrieve predictions 1 2 3 Building smart applications with Amazon ML
  • 33. Train model Evaluate and optimize Retrieve predictions 1 2 3 Building smart applications with Amazon ML - Create a datasource object pointing to your data - Explore and understand your data - Transform data and train your model
  • 34. Create a datasource object >>> import boto >>> ml = boto.connect_machinelearning() >>> ds = ml.create_data_source_from_s3( data_source_id = ’my_datasource', data_spec = { 'DataLocationS3': 's3://bucket/input/data.csv', 'DataSchemaLocationS3': 's3://bucket/input/data.schema', ’compute_statistics’: True } )
  • 36. Train your model >>> import boto >>> ml = boto.connect_machinelearning() >>> model = ml.create_ml_model( ml_model_id = ’my_model', ml_model_type = 'REGRESSION', training_data_source_id = 'my_datasource')
  • 37. Train model Evaluate and optimize Retrieve predictions 1 2 3 Building smart applications with Amazon ML - Measure and understand model quality - Adjust model interpretation
  • 41. Train model Evaluate and optimize Retrieve predictions 1 2 3 Building smart applications with Amazon ML - Batch predictions - Real-time predictions
  • 42. Batch predictions Asynchronous, large-volume prediction generation Request through service console or API Best for applications that deal with batches of data records >>> import boto >>> ml = boto.connect_machinelearning() >>> model = ml.create_batch_prediction( batch_prediction_id = 'my_batch_prediction’, batch_prediction_data_source_id = ’my_datasource’, ml_model_id = ’my_model', output_uri = 's3://examplebucket/output/’)
  • 43. Real-time predictions Synchronous, low-latency, high-throughput prediction generation Request through service API, server, or mobile SDKs Best for interaction applications that deal with individual data records >>> import boto >>> ml = boto.connect_machinelearning() >>> ml.predict( ml_model_id = ’my_model', predict_endpoint = ’example_endpoint’, record = {’key1':’value1’, ’key2':’value2’}) { 'Prediction': { 'predictedValue': 13.284348, 'details': { 'Algorithm': 'SGD', 'PredictiveModelType': 'REGRESSION’ } } }
  • 45. Get predictions with Amazon ML batch API Process data with EMR Raw data in S3 Aggregated data in S3 Predictions in S3 Your application Batch predictions with EMR
  • 46. Structured data In Amazon Redshift Load predictions into Amazon Redshift - or - Read prediction results directly from S3 Predictions in S3 Get predictions with Amazon ML batch API Your application Batch predictions with Amazon Redshift
  • 47. Your application Get predictions with Amazon ML real-time API Amazon ML service Real-time predictions for interactive applications
  • 48. Your application Amazon DynamoDB + Trigger events with Lambda + Get predictions with Amazon ML real-time API Adding predictions to an existing data flow
  • 49. Recommendation engine Amazon S3 Amazon Redshift Amazon ML Data Cleansing Raw Data Train model Build Models S3 Static Website Predictions