Roger Menezes

Senior Research Engineer, Netflix

Roger works as a Senior Research Engineer at Netflix where he is using large scale Machine Learning algorithms to improve Movies Recommendations for Netflix’s 100 M subscribers. Prior to Netflix, he applied Machine Learning and Information Retrieval algorithms to improve the user experience at Yahoo! and Microsoft Bing. Other than ML, he is very interested in distributed computing, having had a brief stint at Amazon AWS.



VEGAS: The Missing Matplotlib for Scala/Apache SparkSummit Europe 2017

In this talk, we'll present techniques for visualizing large scale machine learning systems in Spark. These are techniques that are employed by Netflix to understand and refine the machine learning models behind Netflix's famous recommender systems that are used to personalize the Netflix experience for their 99 millions members around the world. Essential to these techniques is Vegas, a new OSS Scala library that aims to be the "missing MatPlotLib" for Spark/Scala. We'll talk about the design of Vegas and its usage in Scala notebooks to visualize Machine Learning Models. Session hashtag: #EUds0