Title
Choice-based preference elicitation for collaborative filtering recommender systems
Abstract
We present an approach to interactive recommending that combines the advantages of algorithmic techniques with the benefits of user-controlled, interactive exploration in a novel manner. The method extracts latent factors from a matrix of user rating data as commonly used in Collaborative Filtering, and generates dialogs in which the user iteratively chooses between two sets of sample items. Samples are chosen by the system for low and high values of each latent factor considered. The method positions the user in the latent factor space with few interaction steps, and finally selects items near the user position as recommendations. In a user study, we compare the system with three alternative approaches including manual search and automatic recommending. The results show significant advantages of our approach over the three competing alternatives in 15 out of 24 possible parameter comparisons, in particular with respect to item fit, interaction effort and user control. The findings corroborate our assumption that the proposed method achieves a good trade-off between automated and interactive functions in recommender systems.
Year
DOI
Venue
2014
10.1145/2556288.2557069
CHI
Keywords
Field
DocType
latent factor space,latent factor,user rating data,recommender system,user control,interactive exploration,user study,choice-based preference elicitation,user iteratively,interactive function,user position,method extracts latent factor,matrix factorization,recommender systems,user interfaces
Recommender system,Preference elicitation,User control,Collaborative filtering,Computer science,Matrix (mathematics),Matrix decomposition,Human–computer interaction,User modeling,User interface,Multimedia
Conference
Citations 
PageRank 
References 
25
0.89
25
Authors
3
Name
Order
Citations
PageRank
Benedikt Loepp18810.71
Tim Hussein28711.85
Juergen Ziegler3292.35