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Tuesday, December 18, 2012

Google Panda SEO: Provenance and Data Systems - Google Video

GoogleTechTalks has uploaded Panda: A System for Provenance and Data.
Panda: A System for Provenance and Data
Google Tech Talk
Presented by Jennifer Widom, Stanford University.


The goal of the Panda (Provenance and Data) project has been to develop a general-purpose system for modeling, capturing, storing, exploiting, and querying data provenance in a wide range of applications. Abstractly, provenance (also referred to as lineage) describes where data came from and how it has been processed over time. In Panda we consider "data-oriented workflows" whose nodes are arbitrary queries and transformations, challenging us to integrate data-based and process-based provenance, to handle a spectrum from well-understood to opaque transformations, and to develop compositional formalisms and algorithms suitable for arbitrary workflows. On the system side, we strive to enable efficient provenance operations while keeping the capture overhead low.

In this talk, we lay the foundations for data-oriented workflows, then discuss how provenance is defined and cap...

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