Paper Info
Title
Let Me Explain - Impact of Personal and Impersonal Explanations on Trust in Recommender Systems.
Abstract
Trust in a Recommender System (RS) is crucial for its overall success. However, it remains underexplored whether users trust personal recommendation sources (i.e. other humans) more than impersonal sources (i.e. conventional RS), and, if they do, whether the perceived quality of explanation provided account for the difference. We conducted an empirical study in which we compared these two sources of recommendations and explanations. Human advisors were asked to explain movies they recommended in short texts while the RS created explanations based on item similarity. Our experiment comprised two rounds of recommending. Over both rounds the quality of explanations provided by users was assessed higher than the quality of the system's explanations. Moreover, explanation quality significantly influenced perceived recommendation quality as well as trust in the recommendation source. Consequently, we suggest that RS should provide richer explanations in order to increase their perceived recommendation quality and trustworthiness.
Year
DOI
Venue
2019
10.1145/3290605.3300717
CHI
Keywords
Field
DocType
counterfactual analysis, explanations, recommender systems, structural equation modelling, trust, user study
Social psychology,Recommender system,Structural equation modeling,Trustworthiness,Computer science,Human–computer interaction,Empirical research
Conference
ISBN
Citations 
PageRank 
978-1-4503-5970-2
3
0.38
References 
Authors
0
5
Name
Order
Citations
PageRank
Johannes Kunkel1122.26
Tim Donkers2416.15
Lisa Michael330.38
Catalin-Mihai Barbu451.44
Jürgen Ziegler51028300.31