Tag-Cloud Drawing: Algorithms for Cloud Visualization

Details Tag-Cloud Drawing: Algorithms for Cloud Visualization Tag-Cloud Drawing: Algorithms for Cloud Visualization

2007-03-22

arxiv.org/abs/cs/0703109v2

Computer Science

Data Structures and Algorithms

To appear in proceedings of Tagging and Metadata for Social Information Organization (WWW 2007)

Scientific paper

Tag clouds provide an aggregate of tag-usage statistics. They are typically sent as in-line HTML to browsers. However, display mechanisms suited for ordinary text are not ideal for tags, because font sizes may vary widely on a line. As well, the typical layout does not account for relationships that may be known between tags. This paper presents models and algorithms to improve the display of tag clouds that consist of in-line HTML, as well as algorithms that use nested tables to achieve a more general 2-dimensional layout in which tag relationships are considered. The first algorithms leverage prior work in typesetting and rectangle packing, whereas the second group of algorithms leverage prior work in Electronic Design Automation. Experiments show our algorithms can be efficiently implemented and perform well.

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