{"id":434,"date":"2024-10-31T16:24:45","date_gmt":"2024-10-31T16:24:45","guid":{"rendered":"https:\/\/as.vanderbilt.edu\/newmath2025\/?p=434"},"modified":"2025-03-11T20:55:23","modified_gmt":"2025-03-11T20:55:23","slug":"october-31-2024-detection-and-characterization-of-chirps-and-oscillating-singularities-in-data-multivariate-multifractal-techniques","status":"publish","type":"post","link":"https:\/\/as.vanderbilt.edu\/math\/2024\/10\/31\/october-31-2024-detection-and-characterization-of-chirps-and-oscillating-singularities-in-data-multivariate-multifractal-techniques\/","title":{"rendered":"Colloquium &#8211; Detection and characterization of chirps and oscillating singularities in datas: October 31, 2024"},"content":{"rendered":"<p><strong><span class=\"datetime\">October 31, 2024 (Thursday), 4:10 p.m.<\/span><\/strong><\/p>\n<p>Stephane Jaffard- University Paris Est Creteil<\/p>\n<p>Many types of signals display a very oscillatory behavior in the neighborhood of singularities. It is for example the case for gravitational waves, fully developed turbulence, or brain data. A major issue is to detect such behaviors (referred to as \u201coscillating singularities\u201d or \u201cchirps\u201d) which are the signature of important physical phenomena. We will show how a multivariate multifractal analysis based on wavelet methods allows to meet these challenges.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>October 31, 2024 (Thursday), 4:10 p.m. Stephane Jaffard- University Paris Est Creteil Many types of signals display a very oscillatory behavior in the neighborhood of singularities. It is for example the case for gravitational waves, fully developed turbulence, or brain data. A major issue is to detect such behaviors (referred to as \u201coscillating singularities\u201d or&#8230;<\/p>\n","protected":false},"author":74,"featured_media":754,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[],"acf":[],"jetpack_featured_media_url":"https:\/\/as.vanderbilt.edu\/math\/wp-content\/uploads\/sites\/69\/2024\/08\/colloquium.png","_links":{"self":[{"href":"https:\/\/as.vanderbilt.edu\/math\/wp-json\/wp\/v2\/posts\/434"}],"collection":[{"href":"https:\/\/as.vanderbilt.edu\/math\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/as.vanderbilt.edu\/math\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/as.vanderbilt.edu\/math\/wp-json\/wp\/v2\/users\/74"}],"replies":[{"embeddable":true,"href":"https:\/\/as.vanderbilt.edu\/math\/wp-json\/wp\/v2\/comments?post=434"}],"version-history":[{"count":2,"href":"https:\/\/as.vanderbilt.edu\/math\/wp-json\/wp\/v2\/posts\/434\/revisions"}],"predecessor-version":[{"id":665,"href":"https:\/\/as.vanderbilt.edu\/math\/wp-json\/wp\/v2\/posts\/434\/revisions\/665"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/as.vanderbilt.edu\/math\/wp-json\/wp\/v2\/media\/754"}],"wp:attachment":[{"href":"https:\/\/as.vanderbilt.edu\/math\/wp-json\/wp\/v2\/media?parent=434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/as.vanderbilt.edu\/math\/wp-json\/wp\/v2\/categories?post=434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/as.vanderbilt.edu\/math\/wp-json\/wp\/v2\/tags?post=434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}