What you'll learn This course teaches you how to use Scalding (a domain specific language) built on Scala and Cascading to build distributed applications on Hadoop. The course also focuses on the data science aspect using Algebird, an abstract algebra library for Scala, to solve real-world sketching/streaming problems on distributed systems. You will learn how to reason about a variety of problems
Monoids: Theme and Variations (Functional Pearl) Brent A. Yorgey University of Pennsylvania [email protected] Abstract The monoid is a humble algebraic structure, at ï¬rst glance even downright boring. However, thereâs much more to monoids than meets the eye. Using examples taken from the diagrams vector graphics framework as a case study, I demonstrate the power and beauty of monoids for libr
It is well known that since the sort/shuffle stage in MapReduce is costly, local aggregation is one important principle to designing efficient algorithms. This short paper represents an attempt to more clearly articulate this design principle in terms of monoids, which generalizes the use of combiners and the in-mapper combining pattern.
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