Google I/O 2013 - Semantic Video Annotations in the YouTube Topics API: Theory and Applications

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Philipp Pfeiffenberger, Shirley Gaw
Did you know that YouTube automatically classifies videos based on the Freebase Open Knowledge Graph topics that they relate to? We'll talk more about how we pull off this feat of classification, as well as how you can use topics to power YouTube API searches or find related videos.
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