Conference paper Open Access
Olga Papadopoulou; Markos Zampoglou; Symeon Papadopoulos; Yiannis Kompatsiaris
{ "DOI": "10.1145/3078897.3080535", "title": "Web Video Verification using Contextual Cues", "issued": { "date-parts": [ [ 2017, 6, 6 ] ] }, "abstract": "<p>As news agencies and the public increasingly rely on User-Generated Content, content verification is vital for news producers and consumers alike.\u00a0We present a novel approach for verifying Web videos by analyzing their online context. It is based on supervised learning on contextual features: one feature set is based on an existing approach for tweet verification adapted to video comments. The other is based on video metadata, such as the video description, likes/dislikes, and uploader information.<br>\nWe evaluate both on a dataset of real and fake videos from YouTube, and demonstrate their effectiveness (F-scores: 0.82, 0.79).\u00a0We then explore their complementarity and show that under an optimal fusion scheme, the classifier would reach an F-score of 0.9. We finally study the performance of the classifier through time, as more comments accumulate, emulating a real-time verification setting.</p>", "author": [ { "family": "Olga Papadopoulou" }, { "family": "Markos Zampoglou" }, { "family": "Symeon Papadopoulos" }, { "family": "Yiannis Kompatsiaris" } ], "id": "810474", "event-place": "Bucharest, Romania", "type": "paper-conference", "event": "ACM 2nd International Workshop on Multimedia Forensics and Security, co-located with the 2017 ACM International Conference on Multimedia Retrieval (MFSec 2017 @ ICMR2017)" }
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