Saturday, May 07, 2016

Saturday Morning Video: Stream, sketching and Big Data, Graham Cormode at IHP

IHP just organized a series of talks within what they call the nexus trimester which had a focus on  Inference Problems -the whole playlist is here-. Here are a few presentations related to the theme of Nuit Blanche.

Stream, sketching and Big Data, Graham Cormode

Abstract: A fundamental challenge in processing the massive quantities of information generated by modern applications is in extracting suitable representations of the data that can be stored, manipulated and interrogated on a single machine. A promising approach is in the design and analysis of compact summaries: data structures which capture key features of the data, and which can be created effectively over distributed data sets. Popular summary structures include the count distinct algorithms, which compactly approximate item set cardinalities, and sketches which allow vector norms and products to be estimated. These are very attractive, since they can be computed in parallel and combined to yield a single, compact summary of the data. This talk introduces the concepts and examples of compact summaries as well as some recent developments.

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