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Technol."],"published-print":{"date-parts":[[2024,12,31]]},"abstract":"<jats:p>\n            Accurate prediction of citywide crowd activity levels (CALs), i.e., the numbers of participants of citywide crowd activities under different venue categories at certain time and locations, is essential for the city management, the personal service applications, and the entrepreneurs in commercial strategic planning. Existing studies have not thoroughly taken into account the complex spatial and temporal interactions among different categories of CALs and their extreme occurrences, leading to lowered adaptivity and accuracy of their models. To address above concerns, we have proposed\n            <jats:monospace>IE-CALP<\/jats:monospace>\n            , a novel spatio-temporal\n            <jats:italic>I<\/jats:italic>\n            nteractive attention-based and\n            <jats:italic>E<\/jats:italic>\n            xtreme-aware model for\n            <jats:italic>C<\/jats:italic>\n            rowd\n            <jats:italic>A<\/jats:italic>\n            ctivity\n            <jats:italic>L<\/jats:italic>\n            evel\n            <jats:italic>P<\/jats:italic>\n            rediction. The tasks of\n            <jats:monospace>IE-CALP<\/jats:monospace>\n            consist of (a) forecasting the spatial distributions of various CALs at different city regions (spatial CALs), and (b) predicting the number of participants per category of the CALs (categorical CALs). To realize above, we have designed a novel spatial CAL-POI interaction-attentive learning component in\n            <jats:monospace>IE-CALP<\/jats:monospace>\n            to model the spatial interactions across different CAL categories, as well as those among the spatial urban regions and CALs. In addition,\n            <jats:monospace>IE-CALP<\/jats:monospace>\n            incorporate the multi-level trends (e.g., daily and weekly levels of temporal granularity) of CALs through a multi-level temporal feature learning component. Furthermore, to enhance the model adaptivity to extreme CALs (e.g., during extreme urban events or weather conditions), we further take into account the\n            <jats:italic>extreme value theory<\/jats:italic>\n            and model the impacts of historical CALs upon the occurrences of extreme CALs. Extensive experiments upon a total of 738,715 CAL records and 246,660 POIs in New York City (NYC), Los Angeles (LA), and Tokyo have further validated the accuracy, adaptivity, and effectiveness of\n            <jats:monospace>IE-CALP<\/jats:monospace>\n            \u2019s interaction-attentive and extreme-aware CAL predictions.\n          <\/jats:p>","DOI":"10.1145\/3682063","type":"journal-article","created":{"date-parts":[[2024,7,29]],"date-time":"2024-07-29T14:06:56Z","timestamp":1722262016000},"page":"1-26","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Toward Ubiquitous Interaction-Attentive and Extreme-Aware Crowd Activity Level Prediction"],"prefix":"10.1145","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-5262-472X","authenticated-orcid":false,"given":"Huiqun","family":"Huang","sequence":"first","affiliation":[{"name":"University of Connecticut, Storrs, CT, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0914-9373","authenticated-orcid":false,"given":"Xi","family":"Yang","sequence":"additional","affiliation":[{"name":"University of Connecticut, Storrs, CT, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1913-6808","authenticated-orcid":false,"given":"Suining","family":"He","sequence":"additional","affiliation":[{"name":"University of Connecticut, Storrs, CT, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2500-4054","authenticated-orcid":false,"given":"Mahan","family":"Tabatabaie","sequence":"additional","affiliation":[{"name":"University of Connecticut, Storrs, CT, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2024,11,19]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1109\/JSTSP.2013.2237882"},{"key":"e_1_3_2_3_2","unstructured":"Dzmitry Bahdanau Kyunghyun Cho and Yoshua Bengio. 2014. 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