We present a hybrid Immersive Analytics system to support asymmetrical collaboration between a pair of users during synchronous data exploration. The system consists of an immersive Virtual Reality application, a non-immersive web application, and a real-time communication interface connecting both applications to provide features to facilitate the collaborators' mutual understanding and their ability to make (spatial) references. We conducted a real world case study with pairs of language students, encouraging them to use the developed system to investigate a large multivariate Twitter dataset from a sociolinguistic perspective within an explorative analysis scenario. Based on the results of usability scores, log file analyses, observations, and interviews, we were able to validate the approach in general, and gain insights into the users' collaboration with respect to awareness, deixis, and group dynamics. CCS Concepts: • Human-centered computing → Virtual reality; Collaborative interaction; Empirical studies in HCI ; Collaborative and social computing.
PurposeAs the humanities develop in the realm of increasingly more pronounced digital scholarship, it is important to provide quality subject access to a vast range of heterogeneous information objects in digital services. The study aims to paint a representative picture of the current state of affairs of the use of subject index terms in humanities journal articles with particular reference to the well-established subject access needs of humanities researchers, with the purpose of identifying which improvements are needed in this context.Design/methodology/approachThe comparison of subject metadata on a sample of 649 peer-reviewed journal articles from across the humanities is conducted in a university repository, against Scopus, the former reflecting local and national policies and the latter being the most comprehensive international abstract and citation database of research output.FindingsThe study shows that established bibliographic objectives to ensure subject access for humanities journal articles are not supported in either the world's largest commercial abstract and citation database Scopus or the local repository of a public university in Sweden. The indexing policies in the two services do not seem to address the needs of humanities scholars for highly granular subject index terms with appropriate facets; no controlled vocabularies for any humanities discipline are used whatsoever.Originality/valueIn all, not much has changed since 1990s when indexing for the humanities was shown to lag behind the sciences. The community of researchers and information professionals, today working together on digital humanities projects, as well as interdisciplinary research teams, should demand that their subject access needs be fulfilled, especially in commercial services like Scopus and discovery services.
One of the fundamental developments brought about by interactive and multilinear digital technology is the greater structural fragmentation of texts and the consequent reevaluation of textual coherence. While the concept of text is contingent on some internal coherence, the new text type of electronic hypertext places new challenges on this paradigm by allowing ways of reading texts which would appear to disturb rather than build coherence. In relying on the flexible negotiation of readerly expectations with actual continuities experienced as the reading progresses, hypertextual coherence both encourages us to re-evaluate the rules of textual coherence from a more pragmatically oriented point of view and echoes some of the most recent theoretical views of how we interpret words in their surrounding co-text. This article presents an outline for a linguistic analysis of hypertextual coherence and points out the new dimensions of coherence left unaccounted for by conventional models. What happens when multilinearity makes texts unstable? How do we discuss a text -or meaningfully refer to one -if each reading has the power of transforming the potential narrative lines of a hypertext into a new literary object which may have never existed prior to that reading? Digital media rely on a new understanding of texts not as definitive objects, but as networks of relationships and meanings which by their very nature are relative, transitory, and subject to change at any moment. The potentially disturbing effects of such textual characteristics are counter-acted by the new, more fluid concept of digital coherence.
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