Machine Learning with Node.js and PredictionIO 

Tomorrow is a holiday so give me a TV show to binge watch! 

Florian Eckerstorfer Developer in Vienna Vienna.js, 30 April 2014 

Machine Learning Prediction.io Demo 1 2 3 

Machine Learning 1 

Machine learning, a branch of artificial intelligence, concerns the construction and study of systems that can learn from data. wikipedia.org/wiki/Machine_learning 

Classification 

Name Creator Network Episode Length Genre The Sopranos David Chase HBO 60 Drama Weeds Jenji Kohan Showtime 30 Comedy Girls Lena Dunham HBO 30 Comedy Orange Is The New Black Jenji Koahn Netflix 30 ? 

S S S S S S S S S S S S S S S S S S 1. Training 

2. Generalisation S S S S S S S S S 

3. Pattern Matching S ? S 

k-nearest neighbours 

kNN 

1 1 2 k=3 

1 1 2 k=5 2 3 

k-Nearest Neighbours Decision Trees Support Vector Machines Neural Networks Bayesian Networks 

Trade Offs Time Memory Accuracy Algorithm vs. Problem 

PredictionIO 2 

Machine Learning Server 

Scala MongoDB Hadoop Apache Mahout 

PredictionIO Server Admin Web UI Admin Server Engine A Engine B Algorithm X Algorithm Y Algorithm S Algorithm T Workflow Scheduler MapReduce Engine Hadoop Distributed File System Predictive Model Storage Databases REST API Servers SDK SDK Web App Mobile App Ω Ω 

And now in Node.js 

predictionio-client npm install 

var p = require(‘predictionio-client') p.config.APP_KEY = ‘…’; p.config.APP_URL = ‘http://localhost:8000'; p.user.createUser(‘florian’, function() {}); p.item.createItem(‘game of thrones’, 'show', function () {}); p.action.like(‘florian’, ‘game of thrones’, function() {}); p.engine.recommendedItems('itemrec', ‘florian’, 5, function (a,data) { console.log(data); }); 

Demo 3 

github.com/florianeckerstorfer/viennajs-predictionio or shrt.at/1tP 

PredictionIO. prediction.io PredictionIO-NodeJS-Client. github.com/ kostyantyn/PredictionIO-NodeJS-Client PredictionIO on Vagrant. docs.prediction.io/ current/installation/install-predictionio-with- virtualbox-vagrant.html Tom Mitchell. Machine Learning, McGraw Hill, 1997 

Florian Eckerstorfer [email protected] http://florian.ec @Florian_ 

Questions?