Dolby Vision streams within the HTTP Live Streaming format v1.1
Live topic generation from event streams
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Live Topic Generation from Event Streams
Vuk Milicic, José Luis Redondo Garcia,
Giuseppe Rizzo, Raphaël Troncy, Thomas Steiner
[email protected] / @rtroncy
Media Finder (www2013)
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Media Finder (zooming on media items)
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Media Finder (timeline view)
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Media Finder (timeline view)
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Media Server
Composition of media item extractors (12 SNs) Rely on search APIs + a fix 30s timeout window to provide results Fallback on screen scraping when necessary (Twitter ecosystem)
Implemented as a NodeJS server
Serialize results in a common schema (JSON)
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Deep link Permalink
Clean text for NLP processing
Aggregate view of ALL social interactions
12 Social Networks
Media Finder Architecture
Media items harvesting using the Media Server http://eventmedia.eurecom.fr/media-
server/search/{combined}/{term} https://github.com/vuknje/media-server (@tomayac fork)
Image near de-duplication DCT signature on image and video frame,
Hamming distance between image pairs
Clustering and disambiguation Named Entity Extraction using NERD Topic Generation using LDA Density-based clustering using OPTICS
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Named Entities are Pivotal
http://nerd.eurecom.fr/
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REST API Ontology
Dashboard UI
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Media Finder (named entities clustering)
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Media Finder (zooming in a cluster)
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Summary
Pick an event identified with a hashtag
Use MediaServer to get media items aggregated over multiple social networks
Use NERD to get entities aggregated over multiple extractors
Cluster and identify meaningful topics (aka entities) with a meaningful label often disambiguated with a DBpedia URI giving access
to more encyclopedic knowledge
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Live Topic Generation from Event Streams
Meet us at WWW 2013 Demo Session, Booth 14 http://www.youtube.com/watch?v=8iRiwz7cDYY
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http://www.slideshare.net/troncy
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