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		<citationkey>PagliosaMaCePaMiNo:2013:MuInSu</citationkey>
		<title>MIST: Multiscale Information and Summaries of Texts</title>
		<format>On-line.</format>
		<year>2013</year>
		<date>Aug. 5-8, 2013</date>
		<numberoffiles>1</numberoffiles>
		<size>9191 KiB</size>
		<author>Pagliosa, Paulo,</author>
		<author>Martins, Rafael Messias,</author>
		<author>Cedrim, Douglas,</author>
		<author>Paiva, Afonso,</author>
		<author>Minghim, Rosane,</author>
		<author>Nonato, Luis Gustavo,</author>
		<affiliation>FACOM-UFMS</affiliation>
		<affiliation>ICMC-USP</affiliation>
		<affiliation>ICMC-USP</affiliation>
		<affiliation>ICMC-USP</affiliation>
		<affiliation>ICMC-USP</affiliation>
		<affiliation>ICMC-USP</affiliation>
		<editor>Boyer, Kim,</editor>
		<editor>Hirata, Nina,</editor>
		<editor>Nedel, Luciana,</editor>
		<editor>Silva, Claudio,</editor>
		<e-mailaddress>apneto@icmc.usp.br</e-mailaddress>
		<conferencename>Conference on Graphics, Patterns and Images, 26 (SIBGRAPI)</conferencename>
		<conferencelocation>Arequipa, Peru</conferencelocation>
		<booktitle>Proceedings</booktitle>
		<publisher>IEEE Computer Society</publisher>
		<publisheraddress>Los Alamitos</publisheraddress>
		<transferableflag>1</transferableflag>
		<contenttype>External Contribution</contenttype>
		<tertiarytype>Full Paper</tertiarytype>
		<keywords>information visualization, multidimensional projection, rigid-body simulation, word clouds, text visualization.</keywords>
		<abstract>Combining distinct visual metaphors has been the mechanism adopted by several systems to enable the simultaneous visualization of multiple levels of information in a single layout. However, providing a meaningful layout while avoiding visual clutter is still a challenge. In this work we combine word clouds and a rigid-body simulation engine into an intuitive visualization tool that allows a user to visualize and interact with the content of document collections using a single overlap-free layout. The proposed force scheme ensures that neighboring documents are kept close to each other during and after layout change. Each group of neighboring documents formed on the layout generates a word cloud. A multi-seeded procedure guarantees a harmonious arrangement of distinct word clouds in visual space. The visual metaphor employs disks to represent document instances where the size of each disk defines the importance of the document in the collection. To keep the visualization clean and intuitive, only the most relevant documents are depicted as disks while the remaining ones are either displayed as smaller glyphs to help convey density information or simply removed from the layout. Hidden instances are moved together with its neighbors during rigid-body simulation, should they become visible later, but are not processed individually. This shadow movement avoids excess calculations by the force-based scheme, thus ensuring scalability and interactivity.</abstract>
		<language>en</language>
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