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These networks arise in areas such as computational neuroscience, sociology, and biology. Network analysis remains challenging due to complex time-varying network behavior. For example, edges disappear\/reappear, communities grow\/vanish, or overall network topology changes. Our technique, TimeSum, detects the important topological changes in graph data to abstract the dynamic network and visualize one summary representation for each temporal phase, a state. We define a network state as a graph with similar topology over a specific time interval. To enable a holistic comparison of networks, we use a difference network to depict edge and community changes. We present case studies to demonstrate that our methods are effective and useful for extracting and exploring complex dynamic behavior of networks. <\/jats:p>","DOI":"10.1177\/1473871619882019","type":"journal-article","created":{"date-parts":[[2019,11,4]],"date-time":"2019-11-04T13:04:39Z","timestamp":1572872679000},"page":"96-113","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":5,"title":["State-based network similarity visualization"],"prefix":"10.1177","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9889-3905","authenticated-orcid":false,"given":"Sugeerth","family":"Murugesan","sequence":"first","affiliation":[{"name":"Department of Computer Science, UC Davis, Davis, CA, USA"},{"name":"Lawrence Berkeley National Laboratory, Berkeley, CA, USA"}]},{"given":"Kristofer","family":"Bouchard","sequence":"additional","affiliation":[{"name":"Lawrence Berkeley National Laboratory, Berkeley, CA, USA"}]},{"given":"Jesse","family":"Brown","sequence":"additional","affiliation":[{"name":"University of California\u2014San Francisco, San Francisco, CA, USA"}]},{"given":"Mariam","family":"Kiran","sequence":"additional","affiliation":[{"name":"Lawrence Berkeley National Laboratory, Berkeley, CA, USA"}]},{"given":"Dan","family":"Lurie","sequence":"additional","affiliation":[{"name":"University of California\u2014Berkeley, Berkeley, CA, USA"}]},{"given":"Bernd","family":"Hamann","sequence":"additional","affiliation":[{"name":"Department of Computer Science, UC Davis, Davis, CA, USA"}]},{"given":"Gunther H","family":"Weber","sequence":"additional","affiliation":[{"name":"Department of Computer Science, UC Davis, Davis, CA, USA"},{"name":"Lawrence Berkeley National Laboratory, Berkeley, CA, USA"}]}],"member":"179","published-online":{"date-parts":[[2019,11,4]]},"reference":[{"doi-asserted-by":"publisher","key":"bibr1-1473871619882019","DOI":"10.1086\/338779"},{"doi-asserted-by":"publisher","key":"bibr2-1473871619882019","DOI":"10.1109\/2945.468391"},{"volume-title":"Proceedings of the 13th international conference information visualisation","author":"Beck F","first-page":"592","key":"bibr3-1473871619882019"},{"unstructured":"Beck F, Burch M, Diehl S, et al. 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