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Tue Dec 06 09:00 AM -- 12:30 PM (PST) @ Area 5 + 6 + 7 + 8
Content-based Related Video Recommendations
Joonseok Lee

This is a demo of related video recommendations, seeded from random YouTube videos, and based purely on video content signals. Traditional recommendation systems using collaborative filtering (CF) approaches suggest related videos for a given seed based on how many users have watched a particular candidate video right after watching the seed video. This does not take the video content into account but relies on aggregate user behavior. In this demo, we focus on the cold-start problem, where either the seed and/or the candidate video are freshly uploaded (or undiscovered). We model this as a video content-based similarity learning problem, and learn deep video embeddings trained to predict ground-truth video relationships (identified by a CF co-watch-based system) but using only visual content. It embeds any new video into a 1024-dimensional representation based on its content and pairwise video similarity is computed simply as a dot product in the embedding space. We show that the learned video embeddings generalize beyond simple visual similarity and are able to capture complex semantic relationships.