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Recommender Engines : A Peak into Predictive An...
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Raghav Bali
June 12, 2016
Programming
0
93
Recommender Engines : A Peak into Predictive Analytics
Proposed talk on Predictive Analytics and Recommender Engines
Raghav Bali
June 12, 2016
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Transcript
Recommender Engines A Peak into Predictive Analytics
Predictive Analytics http://giphy.com/gifs/season-6-the-simpsons-6x19-3orieSdZDhn7I6gViw
Predictive Analytics • Analysis of current and historical facts/data to
make predictions about the future • Traditionally a field of statistics/statistical computing. • Now encompasses machine learning and data mining. Current Data Historical Data Predict Future Machine Learning / Statistics
Analytical Maturity
Analytical Maturity
Recommender Engines • Class of Information Filtering systems • Model
user preferences • Analyse input data to predict output similar to user preferences.
Types of RE • Collaborative Filters • Content Based Filters
• Hybrid Recommender Engines http://i.imgur.com/xlXjtOL.jpg
RE: Collaborative Filters • Also termed as User Based CF
• Users with similar behaviours and/or attributes have similar preferences
RE : Content Based • Also termed as Item Based
CD+F • Item attributes along with user personas are utilized to build preference models
RE : Hybrid • Best of both worlds • Can
be modelled using User Based CF and Item Based CF in different configurations. • Less prone to issues of sparsity and cold start.
Quick and Dirty RE • Matrix Factorization based Recommender Engine
Quick and Dirty RE • Code and Results
Applications • Jobs you may be interested in • Who
to follow • Other movies you might enjoy
Issues • Cold Start Problem • Sparsity Problem • Filter
Bubble http://ebiquity.umbc.edu/blogger/2015/06/08/hot-stuff-at-coldstart/
References • R Machine Learning by Example (link) • Gartner
Analytics Maturity Model (link)
THANK YOU Raghav Bali (@rghv_bali) http://xkcd.org/892/