title: Holos: A collaborative environment for similarity-based holistic approaches.
abstract: Through this article, we aim to introduce Holos-a new collaborative environment that allows researchers to carry out experiments based on similarity assessments between stimuli, such as in projective-mapping and sorting tasks. An important feature of Holos is its capacity to assess real-time individual processes during the task. Within the Holos environment, researchers can design experiments on its platform, which can handle four kinds of stimuli: concepts, images, sounds, and videos. In addition, researchers can share their study resources within the scientific community, including stimuli, experimental protocols, and/or the data collected. With a dedicated Android application combined with a tactile human-machine interface, subjects can perform experiments using a tablet to obtain similarity measures between stimuli. On the tablet, the stimuli are displayed as icons that can be dragged with one finger to position them, depending on the ways they are perceived. By recording the x,y coordinates of the stimuli while subjects move the icons, the obtained data can reveal the cognitive processes of the subjects during the experiment. Such data, named digit-tracking data, can be analyzed with the SensoMineR package. In this article, we describe how researchers can design an experiment, how subjects can perform the experiment, and how digit-tracking data can be statistically analyzed within the Holos environment. At the end of the article, a short exemplary experiment is presented.
authors.affiliation: Sensory Laboratory, Ho Chi Minh City University of Technology, Ho Chi Minh City, Vietnam.|Postharvest Technology Center, Tra Vinh University, Trà Vinh, Vietnam.
authors.forename: Tâm Minh
authors.initials: TM
authors.lastname: Lê
authors.affiliation: Applied Mathematics Department, Agrocampus Ouest, 65 rue de Saint-Brieuc, 35042, Rennes cedex, France.|Centre Culinaire Contemporain, Rennes, France.
authors.forename: Margot
authors.initials: M
authors.lastname: Brard
authors.affiliation: Applied Mathematics Department, Agrocampus Ouest, 65 rue de Saint-Brieuc, 35042, Rennes cedex, France. sebastien.le@agrocampus-ouest.fr.
authors.forename: Sébastien
authors.initials: S
authors.lastname: Lê
mesh_terms: D003299:Cooperative Behavior; D006801:Humans; D063731:Mobile Applications; D012107:Research Design
keywords: Android application; Digit tracking; Holos; Similarity assessment