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Using a combination of techniques from statistical analysis and machine learning, we conduct a retrospective analysis of historical network data for a period around the stay-at-home orders that took place in March 2020. Our analysis takes data from the entire ESnet infrastructure to explore DOE high-performance computing (HPC) resources at OLCF, ALCF, and NERSC, as well as User sites such as PNNL and JLAB. We look at detecting and quantifying changes in site activity using a combination of t-Distributed Stochastic Neighbor Embedding (t-SNE) and decision tree analysis. Our findings bring insights into the working patterns and impact on data volume movements, particularly during late-night hours and weekends.<\/jats:p>","DOI":"10.1145\/3503954.3503958","type":"journal-article","created":{"date-parts":[[2021,12,3]],"date-time":"2021-12-03T22:23:38Z","timestamp":1638570218000},"page":"23-35","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":2,"title":["Machine learning-based analysis of COVID-19 pandemic impact on US research networks"],"prefix":"10.1145","volume":"51","author":[{"given":"Mariam","family":"Kiran","sequence":"first","affiliation":[{"name":"Energy Sciences Network (ESnet), Berkeley, CA"}]},{"given":"Scott","family":"Campbell","sequence":"additional","affiliation":[{"name":"Energy Sciences Network (ESnet), Berkeley, CA"}]},{"given":"Fatema Bannat","family":"Wala","sequence":"additional","affiliation":[{"name":"Energy Sciences Network (ESnet), Berkeley, CA"}]},{"given":"Nick","family":"Buraglio","sequence":"additional","affiliation":[{"name":"Energy Sciences Network (ESnet), Berkeley, CA"}]},{"given":"Inder","family":"Monga","sequence":"additional","affiliation":[{"name":"Energy Sciences Network (ESnet), Berkeley, CA"}]}],"member":"320","published-online":{"date-parts":[[2021,12,3]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1109\/CAMAD50429.2020.9209302"},{"key":"e_1_2_1_2_1","volume-title":"The Network Impact of the Global COVID-19 Pandemic. https:\/\/thenewstack.io\/the-network-impact-of-the-global-covid-19-pandemic\/. 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In Trends in High Performance and Large Scale Computing Lucio Grandinetti and Gerhard Joubert editors to appear. IOS Press publisher."},{"key":"e_1_2_1_8_1","volume-title":"IP Encapsulating Security Payload (ESP). Internet Engineering Task Force [IETF]","author":"Kent S.","year":"2005","unstructured":"S. Kent . 2005. IP Encapsulating Security Payload (ESP). Internet Engineering Task Force [IETF] ( 2005 ). S. Kent. 2005. IP Encapsulating Security Payload (ESP). Internet Engineering Task Force [IETF] (2005)."},{"key":"e_1_2_1_9_1","doi-asserted-by":"publisher","DOI":"10.1145\/3419394.3423655"},{"key":"e_1_2_1_10_1","volume-title":"Remote Working's Longer Hours Are New Normal for Many. https:\/\/www.bloomberg.com\/news\/articles\/2021-02-02\/remote-workings-longer-hours-are-new-normal-for-many-chart. (2021). Online","author":"Meakin Lucy","year":"2021","unstructured":"Lucy Meakin . 2021. 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