Acknowledgements
Table IV.4: MSE comparison of our model versus baselines.
['[BOLD] Models', '[BOLD] Beer', '[BOLD] Rate', '[BOLD] News', '[BOLD] Amazon', '[BOLD] Yelp']
Ch4S3SS4SSSx3 Ch4S4SS1SSSx2 -Ch5S3SS1SSSx4 Ch5S3SS1SSSx7 -Ch5S3SS2SSSx3 Ch5S3SS2SSSx6 Ch5S3SS3SSSx4 Ch5S3SS3SSSx5 Ch5S4SS2SSSx2 -Ch5S4SS3SSSx3 Our model consistently outperforms all baselines, reducing the MSE by ca. 5 to 35%. Improvements of our model over baselines are statistically significant at p-value <0.0001. This signals that the model captures user evolution past the previous timepoint. Therefore the last (i.e., most recent) experience level attained by a user is most informative for generating new recommendations.