Boosting Health? Examining the Role of Nutrition Labels and Preference Elicitation Methods in Food Recommendation

Alain Starke, Ayoub El Majjodi, Christoph Trattner

Research output: Chapter in Book/Report/Conference proceedingConference paperAcademicpeer-review

Abstract

How users evaluate a recommender system goes beyond the accuracy of the presented content. For food recommendation, users differ in terms of the needs they have. We investigated whether users with different levels of health consciousness evaluated food recommender interfaces differently, depending on two factors: the Preference Elicitation (PE) method and the use of a nutrition label 'boost', which is a nudge that is explained to the user. In an online study (2x2 between-subjects design; N = 244), we compared a constraint-based recipe recommender, with feature-based PE, to a collaborative filtering recipe recommender with rating-based PE. Recipes were either annotated with a multiple traffic light nutrition label (i.e. the boost), or not (i.e., baseline). We found that boosts led to healthier recipe choices across both methods of PE. Moreover, we found users to be less satisfied with the constraint-based PE, while this may depend on the user's level of health consciousness.

Original languageEnglish
Title of host publicationInterfaces and Human Decision Making for Recommender Systems 2022
Pages67-84
Number of pages18
Volume3222
Publication statusPublished - 2022
Event9th Joint Workshop on Interfaces and Human Decision Making for Recommender Systems, IntRS 2022 - Seattle, United States
Duration: 22 Sept 2022 → …

Publication series

NameCEUR Workshop Proceedings
PublisherRheinisch-Westfaelische Technische Hochschule Aachen
ISSN (Print)1613-0073

Conference

Conference9th Joint Workshop on Interfaces and Human Decision Making for Recommender Systems, IntRS 2022
Country/TerritoryUnited States
CitySeattle
Period22/09/22 → …

Keywords

  • digital nudges
  • food recommendations
  • health
  • nutrition labels
  • Personalization

Fingerprint

Dive into the research topics of 'Boosting Health? Examining the Role of Nutrition Labels and Preference Elicitation Methods in Food Recommendation'. Together they form a unique fingerprint.

Cite this