Uncovering User Interest from Biased and Noised Watch Time in Video Recommendation

Understand

In the video recommendation, watch time is commonly adopted as an indicator of user interest.

• However, watch time is not only influenced by the matching of users' interests but also by other factors, such as duration bias and noisy watching.
• Duration bias refers to the tendency for users to spend more time on videos with longer durations, regardless of their actual interest level.
• Noisy watching, on the other hand, describes users taking time to determine whether they like a video or not, which can result in users spending time watching videos they do not like.