{"id":2946,"date":"2022-01-11T14:45:01","date_gmt":"2022-01-11T20:45:01","guid":{"rendered":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/?post_type=tribe_events&#038;p=2946"},"modified":"2022-04-22T14:39:34","modified_gmt":"2022-04-22T19:39:34","slug":"lans-seminar-24","status":"publish","type":"tribe_events","link":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/event\/lans-seminar-24\/","title":{"rendered":"LANS Seminar"},"content":{"rendered":"<p><strong>Seminar Title<\/strong>: Multi-fidelity Estimation in Online Learning and Control<br \/>\n<strong>Speaker<\/strong>: Sami Khairy, Postdoctoral Appointee, ANL\/MCS<\/p>\n<p><strong>Date\/Time<\/strong>: April 27, 2022 \/ 10:30 AM &#8211; 11:30 AM<br \/>\n<strong>Location<\/strong>: See meeting URL on the cels-seminars website\u00a0(requires Argonne login)<\/p>\n<p><strong>Host<\/strong>: Vishwas Rao<\/p>\n<hr \/>\n<p><strong>Description<\/strong>: In many computational science and engineering applications, the output of a system of interest corresponding to a given input can be queried at different levels of fidelity with different computational footprints. Within online learning and control, multi-fidelity data can be exploited in many stages of the decision-making pipeline, including estimation, exploration, and exploitation. In this talk, we present our research on learning models with multi-fidelity estimation in the context of Reinforcement Learning (RL) and Bayesian Optimization (BO). Specifically, we propose methods for learning a Q-function (in RL) and a surrogate model (in BO) that can exploit the cross-correlation among multi-fidelity outputs to improve the predictive capability of the model. The efficacy of our proposed multi-fidelity learning techniques are theoretically analyzed in RL, and empirically demonstrated in BO applied to Neural Architecture Search (NAS).<\/p>\n<p><em>Please note that the meeting URL for this event can be seen on the <\/em>cels-seminars website<em>, which requires an Argonne login.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Seminar Title: Multi-fidelity Estimation in Online Learning and Control Speaker: Sami Khairy, Postdoctoral Appointee, ANL\/MCS Date\/Time: April 27, 2022 \/ 10:30 AM &#8211; 11:30 AM Location: See meeting URL on the cels-seminars website\u00a0(requires Argonne login) Host: Vishwas Rao Description: In &hellip; <a href=\"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/event\/lans-seminar-24\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":43,"featured_media":0,"template":"","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_tribe_events_status":"","_tribe_events_status_reason":"","footnotes":"","_members_access_role":[],"_members_access_error":""},"tags":[],"tribe_events_cat":[2],"class_list":["post-2946","tribe_events","type-tribe_events","status-publish","hentry","tribe_events_cat-seminar","cat_seminar"],"acf":[],"_links":{"self":[{"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/tribe_events\/2946","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/tribe_events"}],"about":[{"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/types\/tribe_events"}],"author":[{"embeddable":true,"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/users\/43"}],"version-history":[{"count":4,"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/tribe_events\/2946\/revisions"}],"predecessor-version":[{"id":3051,"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/tribe_events\/2946\/revisions\/3051"}],"wp:attachment":[{"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/media?parent=2946"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/tags?post=2946"},{"taxonomy":"tribe_events_cat","embeddable":true,"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/tribe_events_cat?post=2946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}