June 6, 2017 Conference paper Open Access

Olga Papadopoulou; Markos Zampoglou; Symeon Papadopoulos; Yiannis Kompatsiaris

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    "doi": "10.1145/3078897.3080535", 
    "description": "<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>", 
    "license": {
      "id": "CC-BY-4.0"
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    "title": "Web Video Verification using Contextual Cues", 
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        "title": "In Video Veritas \u2013 Verification of Social Media Video Content for the News Industry", 
        "acronym": "InVID", 
        "program": "H2020", 
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    "keywords": [
      "Video verification", 
      "Context analysis", 
      "Social media", 
      "Fake news"
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    "publication_date": "2017-06-06", 
    "creators": [
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        "affiliation": "CERTH-ITI, Thessaloniki, Greece", 
        "name": "Olga Papadopoulou"
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      {
        "affiliation": "CERTH-ITI, Thessaloniki, Greece", 
        "name": "Markos Zampoglou"
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      {
        "affiliation": "CERTH-ITI, Thessaloniki, Greece", 
        "name": "Symeon Papadopoulos"
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      {
        "affiliation": "CERTH-ITI, Thessaloniki, Greece", 
        "name": "Yiannis Kompatsiaris"
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    "meeting": {
      "acronym": "MFSec 2017 @ ICMR2017", 
      "url": "http://mklab.iti.gr/mfsec2017/", 
      "dates": "June 6, 2017", 
      "place": "Bucharest, Romania", 
      "title": "ACM 2nd International Workshop on Multimedia Forensics and Security, co-located with the 2017 ACM International Conference on Multimedia Retrieval"
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