Apache The Elephant Driver Presenters: Antonio Loureiro Severien Emmanouil Dimogerontakis Muhammad Anis uddin Nasir
What is Apache Mahout?● Machine learning and data mining framework for classification, clustering and recommendation● The Apache Mahout free machine learning librarys goal is to build scalable machine learning tools for use on analysing big data on a distributed manner
Machine Learning"Machine Learning is programming computers to optimize aperformance criterion using example data or pastexperience" - Alpaydin, 2004Machine learning is concerned with the design anddevelopment of algorithms that allow machines to makedecisions or even evolve behaviors based on collection ofempirical data.
Data MiningData mining, also called knowledge discovery indatabases(KDD) is the process of discovering interestingand useful patterns and relationships in large volumes ofdata.Combines tools from: ● statistics ● artificial intelligence (such as neural networks and machine learning)with database management to analyze large data sets.-Britannica Online Encyclopedia
Why Machine Learning and DataMining?● Data, Data, DATA!!!● Tasks too Hard to Program● Customizing software
Available Machine Learning Tools● WEKA● R● KEEL● Others...Not enough?
Apache Mahout vs others?Many open source Machine Learninglibraries either:● Lack Community● Lack Documentation and Examples● Lack the Apache License (business opportunity)● Are research-oriented (not fit for production yet)● Lack Scalability
Classification(learn to assign categories to documents)Fully functional ● Logistic Regression (SGD) ● BayesianIntegrated to Mahout Development ● Random Forests (integrated) ● Online Passive Aggressive (integrated) ● Boosting (awaiting patch commit)Open to be worked on... ● Hidden Markov Models (HMM) - Training is done in Map-Reduce ● Support Vector Machines (SVM) (open) ● Perceptron and Winnow (open) ● Neural Network (open)
Clustering(group items that are topically related)Fully functional ● Expectation Maximization (EM) ● Hierarchical ClusteringIntegrated to Mahout Development ● Canopy Clustering ● K-Means Clustering ● Fuzzy K-Means ● Mean Shift Clustering ● Dirichlet Process Clustering ● Latent Dirichlet Allocation ● Spectral Clustering ● Minhash Clustering ● Top Down Clustering
Recommenders /Collaborative Filtering(find items a user might like /find items that appear together)Integrated to Mahout Development● Non-distributed recommenders ("Taste") (integrated)● Distributed Item-Based Collaborative Filtering (integrated)● Collaborative Filtering using a parallel matrix factorization (integrated)
Where to start?● Wikipedia Bayes Example ○ https://cwiki.apache.org/MAHOUT/wikipedia-bayes-example.html● What does it do? ○ Classify wikipedia data dump by countries. ○ Objective: Predict what country an unseen article should be categorized into.
ReferencesGeneralhttp://www.slideshare.net/sdec2011/sdec2011-mahout-the-what-the-how-and-the-whyhttp://www.slideshare.net/gsingers/intro-to-mahout-dc-hadoophttp://www.slideshare.net/aneeshabakharia/lca2011-mahoutHands-onhttp://www.slideshare.net/OReillyOSCON/hands-on-mahoutWho is using it?https://cwiki.apache.org/MAHOUT/powered-by-mahout.htmlApache Mahouthttp://mahout.apache.org/Quickstarthttps://cwiki.apache.org/MAHOUT/quickstart.html