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Understanding the scale evolution of information and subjects within the public opinion ecology of emergencies can aid in achieving macrocontrol. To address this, an information\u2010subject dual\u2010structure model was developed to illustrate the scale development trend. Fitting and prediction methods based on the model were proposed, and general rules were provided through simulation. For empirical research, data from three categories of six emergency events were downloaded from the GsData platform. The linear regression method was used to predict the trend of subjects and information, achieving an\n                    <jats:italic>F<\/jats:italic>\n                    1 fit above 82% for the six datasets. Subsequently, a fine\u2010tuning matrix was established, increasing the\n                    <jats:italic>F<\/jats:italic>\n                    1 values to over 98.30%, thereby confirming the model\u2019s interpretability and universality.\n                  <\/jats:p>","DOI":"10.1155\/cplx\/1516913","type":"journal-article","created":{"date-parts":[[2026,2,17]],"date-time":"2026-02-17T09:11:42Z","timestamp":1771319502000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The Dual Interaction Structure of \u201cInformation\u2010Group\u201d in the Diffusion of Emergency Information: An Empirical Study From 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