The World's Languages Explorer: Visual Analysis of Language Features in Genealogical and Areal Contexts

Authors:
Christian Rohrdantz;Michael Hund;Thomas Mayer;Bernhard Wälchli;Daniel A. Keim
Affiliations:
Department of Computer Science, University of Konstanz, Germany;Department of Computer Science, University of Konstanz, Germany;Research Unit “Quantitative Language Comparison”, LMU Munich, Germany and Department of Linguistics, University of Konstanz, Germany;Department of Linguistics, Stockholm University, Sweden;Department of Computer Science, University of Konstanz, Germany
Venue:
Computer Graphics Forum
Year:
2012

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Abstract

This paper presents a novel Visual Analytics approach that helps linguistic researchers to explore the world's languages with respect to several important tasks: (1) The comparison of manually and automatically extracted language features across languages and within the context of language genealogy, (2) the exploration of interrelations among several of such features as well as their homogeneity and heterogeneity within subtrees of the language genealogy, and (3) the exploration of genealogical and areal influences on the features. We introduce the World's Languages Explorer, which provides the required functionalities in one single Visual Analytics environment. Contributions are made for different parts of the system: We introduce an extended Sunburst visualization whose so-called feature-rings allow for a cross-comparison of a large number of features at once, within the hierarchical context of the language genealogy. We suggest a mapping of homogeneity measures to all levels of the hierarchy. In addition, we suggest an integration of information from the areal data space into the hierarchical data space. With our approach we bring Visual Analytics research to a new application field, namely Historical Comparative Linguistics, and Linguistic and Areal Typology. Finally, we provide evidence of the good performance of our system in this area through two application case studies conducted by domain experts. © 2012 Wiley Periodicals, Inc.