Tubes and bubbles topological confinement of YouTube recommendations
Left: Distribution of the percentage of novelty: percentage of plateau recommendations which are new at the end of the long crawl (after R = 2000 requests) vs. its beginning. Middle: Distribution of the percentage of such novelty which could nonetheless be found deeper in the recommendation graph already at the beginning of the crawl. Right: Average, over all seeds, of the provenance of plateau recommendations, with respect to their position in the recommendation graph. Error bars indicate standard deviations.