Sentiment Visualisation Widgets for Exploratory Search
This work addresses sentiment-based exploratory search for users, but it is incremental as it builds on existing visualization methods.
The paper tackled the problem of exploratory search with sentiment as a facet by proposing visualization widgets, and the result showed that users spent more time browsing with scatter plots, with engagement significantly greater for explorers.
This paper proposes the usage of \emph{visualisation widgets} for exploratory search with \emph{sentiment} as a facet. Starting from specific design goals for depiction of ambivalence in sentiment, two visualization widgets were implemented: \emph{scatter plot} and \emph{parallel coordinates}. Those widgets were evaluated against a text baseline in a small-scale usability study with exploratory tasks using Wikipedia as dataset. The study results indicate that users spend more time browsing with scatter plots in a positive way. A post-hoc analysis of individual differences in behavior revealed that when considering two types of users, \emph{explorers} and \emph{achievers}, engagement with scatter plots is positive and significantly greater \textit{when users are explorers}. We discuss the implications of these findings for sentiment-based exploratory search and personalised user interfaces.