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Quantitative data visualization is an important element of corpus linguistics, and visualization tools are commonly available in corpus management systems (CMSs) or developed for custom tasks. Nonetheless, the implementation and advancement of visualization methods can be a challenge, both for individual projects and collectively. This article introduces a web application template that integrates with the Sketch Engine application programming interface (API) to encourage the development of new visualization tools that can provide advanced visualization features while directly communicating with the CMS. The application template, written in Python and called Quartz, is described and implemented for the Humanitarian Encyclopedia as part of ongoing efforts to conduct analyses of humanitarian concepts. The application’s features, purpose, and limitations are described, and an example case study utilizing the software is offered, focusing on usage patterns of the concept localization in the humanitarian domain. Some of the challenges of improving visualization techniques for corpus-based analysis are discussed, including data interoperability and the role of visualization in data exploration.

A vocabulary is a linguistic resource that helps manage, query and retrieve information and/or knowledge via words. If vocabularies are built and used in electronic format, they are referred as e-vocabularies. E-vocabularies have been used in Education to help teachers and students to, amongst many issues, (1) comprehend and relate the concepts and the objects of a given knowledge domain; (2) understand and learn languages, be they specialized or not; and (3) identify, describe and query knowledge and digital educational resources. Despite its utility, it is in this field where vocabularies seem to be less systematically developed, known, studied, analyzed, compared and/or linked. For this reason, we thought it was an opportunity to edit a dedicated volume with real experiences concerning the construction, use and evaluation of electronic vocabularies relating to education, and their application to the Internet and e-learning. The result is, finally, this Special Issue with five papers that represent part of the current state-of-the-art in the construction and use of e-vocabularies and education.