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Stable Word-Clouds for Visualising Text-Changes Over Time

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Digital Libraries for Open Knowledge (TPDL 2019)

Abstract

Word-clouds are a useful tool for providing overviews over texts, visualising relevant words. Multiple word-clouds can also be used to visualise changes over time in a text. This requires that the words in the individual word-clouds have stable positions, as otherwise it is very difficult so see what changed between two consecutive word-clouds. Existing approaches have used coordinated positioning algorithms, which do not allow for their use in an online, dynamic context. In this paper we present a fast word-cloud algorithm that uses word orthogonality to determine which words can share the same space in the word-clouds combined with a simple, but fast spiral-based layout algorithm. The evaluation shows that the algorithm achieves its goal of creating series of word-clouds fast enough to enable use in an online, dynamic context.

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Notes

  1. 1.

    Locate, Explore, Retrace and Apprehend complex text variants https://lera.uzi.uni-halle.de.

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Correspondence to Elisa Herold .

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Herold, E., Pöckelmann, M., Berg, C., Ritter, J., Hall, M.M. (2019). Stable Word-Clouds for Visualising Text-Changes Over Time. In: Doucet, A., Isaac, A., Golub, K., Aalberg, T., Jatowt, A. (eds) Digital Libraries for Open Knowledge. TPDL 2019. Lecture Notes in Computer Science(), vol 11799. Springer, Cham. https://doi.org/10.1007/978-3-030-30760-8_20

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  • DOI: https://doi.org/10.1007/978-3-030-30760-8_20

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