{"id":734,"date":"2026-03-27T11:26:20","date_gmt":"2026-03-27T10:26:20","guid":{"rendered":"https:\/\/blogg.lnu.se\/disa\/?p=734"},"modified":"2026-03-27T11:26:26","modified_gmt":"2026-03-27T10:26:26","slug":"welcome-to-our-higher-research-seminar-in-april","status":"publish","type":"post","link":"https:\/\/blogg.lnu.se\/disa\/?p=734","title":{"rendered":"Welcome to our Higher Research Seminar in April"},"content":{"rendered":"\n<p><strong>When?\u00a0<\/strong>April 24, 14.00-15.00<br><strong>Where?<\/strong>\u00a0Onsite: D2272 and via zoom<br>Registration:\u00a0Please sign up for the seminar via this link\u00a0<a href=\"https:\/\/forms.gle\/9RnPVPc51CkQMgRc7\">https:\/\/forms.gle\/9RnPVPc51CkQMgRc7<\/a> by April 22. This is especially important if you plan to attend onsite so we can make sure there is fika for everyone.<\/p>\n\n\n\n<p><strong>Agenda<br><\/strong>14.00-14.10 Welcome and practical information<br>14.10-14.55 <em>Latent-Variable Learning of SPDEs via Wiener Chaos<\/em> \u2013 Sebastian Zeng&nbsp;&nbsp;<br>14.55 \u2013 15.00 Sum up and plan for our upcoming seminars<strong><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><br>Abstract <\/h2>\n\n\n\n<p><strong><em>Latent-Variable Learning of SPDEs via Wiener Chaos<\/em> \u2013 Sebastian Zeng\u00a0\u00a0<\/strong><br>We study the problem of learning the law of linear stochastic partial differential equations (SPDEs) with additive Gaussian forcing from spatiotemporal observations. Most existing deep learning approaches either assume access to the driving noise or initial\u00a0condition, or\u00a0rely on deterministic surrogate models that\u00a0fail to\u00a0capture intrinsic stochasticity. We propose a structured latent-variable formulation that requires only observations of solution realizations and learns the underlying randomly forced dynamics. <\/p>\n\n\n\n<p>Our approach combines a spectral&nbsp;Galerkin&nbsp;projection with a truncated Wiener chaos expansion, yielding a principled separation between deterministic evolution and stochastic forcing. This reduces the infinite-dimensional SPDE to a finite system of parametrized ordinary differential equations governing latent temporal dynamics. The latent dynamics and stochastic forcing are jointly inferred through variational learning, allowing recovery of stochastic structure without explicit observation or simulation of noise during training.&nbsp;Empirical evaluation on synthetic data demonstrates state-of-the-art performance under comparable modeling assumptions across bounded and unbounded one-dimensional spatial domains.&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>When?\u00a0April 24, 14.00-15.00Where?\u00a0Onsite: D2272 and via zoomRegistration:\u00a0Please sign up for the seminar via this link\u00a0https:\/\/forms.gle\/9RnPVPc51CkQMgRc7 by April 22. This is especially important if you plan to attend onsite so we can make sure there is fika for everyone. Agenda14.00-14.10 Welcome and practical information14.10-14.55 Latent-Variable Learning of SPDEs via Wiener Chaos \u2013 Sebastian Zeng&nbsp;&nbsp;14.55 \u2013 15.00 [&hellip;]<\/p>\n","protected":false},"author":19939,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[93],"tags":[27512],"class_list":["post-734","post","type-post","status-publish","format-standard","hentry","category-blogg","tag-seminars"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>Welcome to our Higher Research Seminar in April - DISA<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/blogg.lnu.se\/disa\/?p=734\" \/>\r\n<meta property=\"og:locale\" content=\"en_US\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"Welcome to our Higher Research Seminar in April - DISA\" \/>\r\n<meta property=\"og:description\" content=\"When?\u00a0April 24, 14.00-15.00Where?\u00a0Onsite: D2272 and via zoomRegistration:\u00a0Please sign up for the seminar via this link\u00a0https:\/\/forms.gle\/9RnPVPc51CkQMgRc7 by April 22. This is especially important if you plan to attend onsite so we can make sure there is fika for everyone. Agenda14.00-14.10 Welcome and practical information14.10-14.55 Latent-Variable Learning of SPDEs via Wiener Chaos \u2013 Sebastian Zeng&nbsp;&nbsp;14.55 \u2013 15.00 [&hellip;]\" \/>\r\n<meta property=\"og:url\" content=\"https:\/\/blogg.lnu.se\/disa\/?p=734\" \/>\r\n<meta property=\"og:site_name\" content=\"DISA\" \/>\r\n<meta property=\"article:published_time\" content=\"2026-03-27T10:26:20+00:00\" \/>\r\n<meta property=\"article:modified_time\" content=\"2026-03-27T10:26:26+00:00\" \/>\r\n<meta name=\"author\" content=\"Elin Gunnarsson\" \/>\r\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\r\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Elin Gunnarsson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\r\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogg.lnu.se\/disa\/?p=734\",\"url\":\"https:\/\/blogg.lnu.se\/disa\/?p=734\",\"name\":\"Welcome to our Higher Research Seminar in April - DISA\",\"isPartOf\":{\"@id\":\"https:\/\/blogg.lnu.se\/disa\/#website\"},\"datePublished\":\"2026-03-27T10:26:20+00:00\",\"dateModified\":\"2026-03-27T10:26:26+00:00\",\"author\":{\"@id\":\"https:\/\/blogg.lnu.se\/disa\/#\/schema\/person\/efff0d86afb01dd6efe2bec4e44b3fe2\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogg.lnu.se\/disa\/?p=734\"]}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blogg.lnu.se\/disa\/#website\",\"url\":\"https:\/\/blogg.lnu.se\/disa\/\",\"name\":\"DISA\",\"description\":\"Centre for Data Intensive Sciences and Applications\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blogg.lnu.se\/disa\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/blogg.lnu.se\/disa\/#\/schema\/person\/efff0d86afb01dd6efe2bec4e44b3fe2\",\"name\":\"Elin Gunnarsson\",\"url\":\"https:\/\/blogg.lnu.se\/disa\/?author=19939\"}]}<\/script>\r\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Welcome to our Higher Research Seminar in April - DISA","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/blogg.lnu.se\/disa\/?p=734","og_locale":"en_US","og_type":"article","og_title":"Welcome to our Higher Research Seminar in April - DISA","og_description":"When?\u00a0April 24, 14.00-15.00Where?\u00a0Onsite: D2272 and via zoomRegistration:\u00a0Please sign up for the seminar via this link\u00a0https:\/\/forms.gle\/9RnPVPc51CkQMgRc7 by April 22. This is especially important if you plan to attend onsite so we can make sure there is fika for everyone. Agenda14.00-14.10 Welcome and practical information14.10-14.55 Latent-Variable Learning of SPDEs via Wiener Chaos \u2013 Sebastian Zeng&nbsp;&nbsp;14.55 \u2013 15.00 [&hellip;]","og_url":"https:\/\/blogg.lnu.se\/disa\/?p=734","og_site_name":"DISA","article_published_time":"2026-03-27T10:26:20+00:00","article_modified_time":"2026-03-27T10:26:26+00:00","author":"Elin Gunnarsson","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Elin Gunnarsson","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/blogg.lnu.se\/disa\/?p=734","url":"https:\/\/blogg.lnu.se\/disa\/?p=734","name":"Welcome to our Higher Research Seminar in April - DISA","isPartOf":{"@id":"https:\/\/blogg.lnu.se\/disa\/#website"},"datePublished":"2026-03-27T10:26:20+00:00","dateModified":"2026-03-27T10:26:26+00:00","author":{"@id":"https:\/\/blogg.lnu.se\/disa\/#\/schema\/person\/efff0d86afb01dd6efe2bec4e44b3fe2"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/blogg.lnu.se\/disa\/?p=734"]}]},{"@type":"WebSite","@id":"https:\/\/blogg.lnu.se\/disa\/#website","url":"https:\/\/blogg.lnu.se\/disa\/","name":"DISA","description":"Centre for Data Intensive Sciences and Applications","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/blogg.lnu.se\/disa\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/blogg.lnu.se\/disa\/#\/schema\/person\/efff0d86afb01dd6efe2bec4e44b3fe2","name":"Elin Gunnarsson","url":"https:\/\/blogg.lnu.se\/disa\/?author=19939"}]}},"_links":{"self":[{"href":"https:\/\/blogg.lnu.se\/disa\/index.php?rest_route=\/wp\/v2\/posts\/734","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogg.lnu.se\/disa\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogg.lnu.se\/disa\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogg.lnu.se\/disa\/index.php?rest_route=\/wp\/v2\/users\/19939"}],"replies":[{"embeddable":true,"href":"https:\/\/blogg.lnu.se\/disa\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=734"}],"version-history":[{"count":1,"href":"https:\/\/blogg.lnu.se\/disa\/index.php?rest_route=\/wp\/v2\/posts\/734\/revisions"}],"predecessor-version":[{"id":735,"href":"https:\/\/blogg.lnu.se\/disa\/index.php?rest_route=\/wp\/v2\/posts\/734\/revisions\/735"}],"wp:attachment":[{"href":"https:\/\/blogg.lnu.se\/disa\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=734"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogg.lnu.se\/disa\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=734"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogg.lnu.se\/disa\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=734"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}