An Experimental Usability Test for different Destination Recommender Systems.

The present paper outlines the experimental evaluation of travel recommendation systems. First, theoretical concepts concentrating on the influencing factors for human-computer interaction, system usage and satisfaction are reviewed. An introduction of various methods dealing with usability evaluation is given and an overview of different "standard" survey instruments is provided. Second, a case study, the assessment of a travel recommender system currently under development, is presented. The evaluation considers aspects such as design and layout, functionality or ease of use. These measures obtained by a user questionnaire arc combined with user interaction logging data. Different variants of the travel recommendation system and a baseline system were used for the assessment. This promising approach complements subjective ratings by objective tracking data to obtain a more thorough picture of the system's weaknesses. Finally, findings are presented and an explanatory model for user/system satisfaction is proposed. [ABSTRACT FROM AUTHOR]