Let's assume, we have the following linear regression model:
Paper link: https://www.researchgate.net/publication/351347450_Revisiting_the_Tag_Relevance_Prediction_Problem
GitHub: https://github.com/Bionic1251/Revisiting-the-Tag-Relevance-Prediction-Problem
Traditionally, recommender systems provide a list of suggestions to a user based on past interactions with items of this user. These recommendations are usually based on user preferences for items and generated with a delay. Critiquing recommender systems allow users to provide immediate feedback to recommendations with tags and receive a new set of recommendations in response. However, these systems often require rich item descriptions that contain relevance scores indicating the strength, with which a tag applies to an item. For example, this relevance score could indicate how violent the movie ``The Godfather'' is on a scale from 0 to 1. Retrieving these data is a very demanding process, as it requires users to explicitly indicate the degree to which a tag applies to an item. This process can be improved with machine learning methods that predict tag relevance. In this paper, we explore the dataset from a different study, where the authors collected relevance scores on movie-tag pairs. In particular, we define the tag relevance prediction problem, explore the inconsistency of relevance scores provided by users as a challenge of this problem and present a method, which outperforms the state-of-the-art method for predicting tag relevance. We found a moderate inconsistency of user relevance scores. We also found that users tend to disagree more on subjective tags, such as ``good acting'', ``bad plot'' or ``quotable'' than on objective tags, such as ``animation'', ``cars'' or ``wedding'', but the disagreement of users regarding objective tags is also moderate.
