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. 2018 Jan 5;18:2. doi: 10.1186/s12911-017-0579-1

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 7 — Figures in sentiment analysis. a The proportion of negative users in each community. The horizontal axis represents the community’s ID, the vertical axis represents the proportion of negative users in each community. Scatter size is proportional to the size of community and color corresponds to the ratio of negative users (green: low; yellow: high). b Popular keywords in different communities. Left: positive communities; right: negative communities (see Additional file 1: Table S5 for details)