{"id":11955,"date":"2023-07-06T12:33:08","date_gmt":"2023-07-06T10:33:08","guid":{"rendered":"https:\/\/new.sano.science\/?post_type=people&p=11955"},"modified":"2025-01-12T22:55:41","modified_gmt":"2025-01-12T21:55:41","slug":"agus-hartoyo","status":"publish","type":"people","link":"https:\/\/sano.science\/people\/agus-hartoyo\/","title":{"rendered":"Agus Hartoyo"},"excerpt":{"rendered":"

PostDoc in Computer Vision (Computational Neuroscience)<\/p>\n","protected":false},"featured_media":18630,"template":"","people_teams":[33,24],"class_list":["post-11955","people","type-people","status-publish","has-post-thumbnail","hentry","people_teams-computational-neuroscience","people_teams-alumni"],"yoast_head":"\nAgus Hartoyo - Centre for Computational Personalized Medicine<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sano.science\/people\/agus-hartoyo\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Agus Hartoyo\" \/>\n<meta property=\"og:description\" content=\"PostDoc in Computer Vision (Computational Neuroscience)\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sano.science\/people\/agus-hartoyo\/\" \/>\n<meta property=\"og:site_name\" content=\"Centre for Computational Personalized Medicine\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/sano.science\/\" \/>\n<meta property=\"article:modified_time\" content=\"2025-01-12T21:55:41+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sano.science\/wp-content\/uploads\/2023\/07\/Sano-Agus-Hartoyo.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@sanoscience\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/sano.science\\\/people\\\/agus-hartoyo\\\/\",\"url\":\"https:\\\/\\\/sano.science\\\/people\\\/agus-hartoyo\\\/\",\"name\":\"Agus Hartoyo - Centre for Computational Personalized Medicine\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/sano.science\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/sano.science\\\/people\\\/agus-hartoyo\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/sano.science\\\/people\\\/agus-hartoyo\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/sano.science\\\/wp-content\\\/uploads\\\/2023\\\/07\\\/Sano-Agus-Hartoyo.png\",\"datePublished\":\"2023-07-06T10:33:08+00:00\",\"dateModified\":\"2025-01-12T21:55:41+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/sano.science\\\/people\\\/agus-hartoyo\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/sano.science\\\/people\\\/agus-hartoyo\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/sano.science\\\/people\\\/agus-hartoyo\\\/#primaryimage\",\"url\":\"https:\\\/\\\/sano.science\\\/wp-content\\\/uploads\\\/2023\\\/07\\\/Sano-Agus-Hartoyo.png\",\"contentUrl\":\"https:\\\/\\\/sano.science\\\/wp-content\\\/uploads\\\/2023\\\/07\\\/Sano-Agus-Hartoyo.png\",\"width\":1000,\"height\":1000},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/sano.science\\\/people\\\/agus-hartoyo\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/sano.science\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"People\",\"item\":\"https:\\\/\\\/sano.science\\\/people\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Research\",\"item\":\"https:\\\/\\\/sano.science\\\/people-teams\\\/research\\\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Computational Neuroscience\",\"item\":\"https:\\\/\\\/sano.science\\\/people-teams\\\/computational-neuroscience\\\/\"},{\"@type\":\"ListItem\",\"position\":5,\"name\":\"Agus Hartoyo\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/sano.science\\\/#website\",\"url\":\"https:\\\/\\\/sano.science\\\/\",\"name\":\"Centre for Computational Personalized Medicine\",\"description\":\"Sano \u2013 Centre for Computational Medicine\",\"publisher\":{\"@id\":\"https:\\\/\\\/sano.science\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/sano.science\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/sano.science\\\/#organization\",\"name\":\"Sano \u2013 Centre for Computational Medicine\",\"alternateName\":\"Sano\",\"url\":\"https:\\\/\\\/sano.science\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/sano.science\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/sano.science\\\/wp-content\\\/uploads\\\/2024\\\/05\\\/logo_sano_podstawowe.png\",\"contentUrl\":\"https:\\\/\\\/sano.science\\\/wp-content\\\/uploads\\\/2024\\\/05\\\/logo_sano_podstawowe.png\",\"width\":700,\"height\":265,\"caption\":\"Sano \u2013 Centre for Computational Medicine\"},\"image\":{\"@id\":\"https:\\\/\\\/sano.science\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/sano.science\\\/\",\"https:\\\/\\\/x.com\\\/sanoscience\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/sanoscience\\\/\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UCDZ_8TcjMWUG2ZcgKKgfpwQ\",\"https:\\\/\\\/bsky.app\\\/profile\\\/sanoscience.bsky.social\"]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Agus Hartoyo - Centre for Computational Personalized Medicine","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:\/\/sano.science\/people\/agus-hartoyo\/","og_locale":"en_US","og_type":"article","og_title":"Agus Hartoyo","og_description":"PostDoc in Computer Vision (Computational Neuroscience)","og_url":"https:\/\/sano.science\/people\/agus-hartoyo\/","og_site_name":"Centre for Computational Personalized Medicine","article_publisher":"https:\/\/www.facebook.com\/sano.science\/","article_modified_time":"2025-01-12T21:55:41+00:00","og_image":[{"width":1000,"height":1000,"url":"https:\/\/sano.science\/wp-content\/uploads\/2023\/07\/Sano-Agus-Hartoyo.png","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_site":"@sanoscience","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/sano.science\/people\/agus-hartoyo\/","url":"https:\/\/sano.science\/people\/agus-hartoyo\/","name":"Agus Hartoyo - Centre for Computational Personalized Medicine","isPartOf":{"@id":"https:\/\/sano.science\/#website"},"primaryImageOfPage":{"@id":"https:\/\/sano.science\/people\/agus-hartoyo\/#primaryimage"},"image":{"@id":"https:\/\/sano.science\/people\/agus-hartoyo\/#primaryimage"},"thumbnailUrl":"https:\/\/sano.science\/wp-content\/uploads\/2023\/07\/Sano-Agus-Hartoyo.png","datePublished":"2023-07-06T10:33:08+00:00","dateModified":"2025-01-12T21:55:41+00:00","breadcrumb":{"@id":"https:\/\/sano.science\/people\/agus-hartoyo\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/sano.science\/people\/agus-hartoyo\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/sano.science\/people\/agus-hartoyo\/#primaryimage","url":"https:\/\/sano.science\/wp-content\/uploads\/2023\/07\/Sano-Agus-Hartoyo.png","contentUrl":"https:\/\/sano.science\/wp-content\/uploads\/2023\/07\/Sano-Agus-Hartoyo.png","width":1000,"height":1000},{"@type":"BreadcrumbList","@id":"https:\/\/sano.science\/people\/agus-hartoyo\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/sano.science\/"},{"@type":"ListItem","position":2,"name":"People","item":"https:\/\/sano.science\/people\/"},{"@type":"ListItem","position":3,"name":"Research","item":"https:\/\/sano.science\/people-teams\/research\/"},{"@type":"ListItem","position":4,"name":"Computational Neuroscience","item":"https:\/\/sano.science\/people-teams\/computational-neuroscience\/"},{"@type":"ListItem","position":5,"name":"Agus Hartoyo"}]},{"@type":"WebSite","@id":"https:\/\/sano.science\/#website","url":"https:\/\/sano.science\/","name":"Centre for Computational Personalized Medicine","description":"Sano \u2013 Centre for Computational Medicine","publisher":{"@id":"https:\/\/sano.science\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/sano.science\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/sano.science\/#organization","name":"Sano \u2013 Centre for Computational Medicine","alternateName":"Sano","url":"https:\/\/sano.science\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/sano.science\/#\/schema\/logo\/image\/","url":"https:\/\/sano.science\/wp-content\/uploads\/2024\/05\/logo_sano_podstawowe.png","contentUrl":"https:\/\/sano.science\/wp-content\/uploads\/2024\/05\/logo_sano_podstawowe.png","width":700,"height":265,"caption":"Sano \u2013 Centre for Computational Medicine"},"image":{"@id":"https:\/\/sano.science\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/sano.science\/","https:\/\/x.com\/sanoscience","https:\/\/www.linkedin.com\/company\/sanoscience\/","https:\/\/www.youtube.com\/channel\/UCDZ_8TcjMWUG2ZcgKKgfpwQ","https:\/\/bsky.app\/profile\/sanoscience.bsky.social"]}]}},"acf":[],"meta_data":{"description":"<p>Agus obtained his Ph.D. in computational neuroscience from Swinburne University of Technology, Australia, with a dissertation addressing the inference of physiological mechanisms in the human cortex by fitting a neural population model to EEG data. His Ph.D. dissertation was examined by two experts in computational neuroscience, one of whom graded the thesis with the highest grade: \u201cExcellent – Summa cum Laude\u201d. Before doing the Ph.D., he received his M.Sc. in Computer Science from TU Kaiserslautern, Germany. After his Ph.D., he joined the School of Computing, Telkom University, Indonesia, as an academic. His research interests include computational neuroscience, statistical inference, machine learning, logic, and formal methods. He is currently a postdoctoral researcher at Sano, investigating the comorbidity of PTSD and other disorders via machine learning analysis of EEG.<\/p>\n","email":"","social_media":[{"icon":{"ID":11994,"id":11994,"title":"linkedin","filename":"linkedin.svg","filesize":914,"url":"https:\/\/sano.science\/wp-content\/uploads\/2023\/05\/linkedin.svg","link":"https:\/\/sano.science\/people\/maciej-malawski\/linkedin-2\/","alt":"","author":"5","description":"","caption":"","name":"linkedin-2","status":"inherit","uploaded_to":531,"date":"2023-07-06 11:24:13","modified":"2023-07-06 11:24:13","menu_order":0,"mime_type":"image\/svg+xml","type":"image","subtype":"svg+xml","icon":"https:\/\/sano.science\/wp-includes\/images\/media\/default.png","width":1,"height":1,"sizes":{"thumbnail":"https:\/\/sano.science\/wp-content\/uploads\/2023\/05\/linkedin.svg","thumbnail-width":150,"thumbnail-height":150,"medium":"https:\/\/sano.science\/wp-content\/uploads\/2023\/05\/linkedin.svg","medium-width":300,"medium-height":300,"medium_large":"https:\/\/sano.science\/wp-content\/uploads\/2023\/05\/linkedin.svg","medium_large-width":768,"medium_large-height":1,"large":"https:\/\/sano.science\/wp-content\/uploads\/2023\/05\/linkedin.svg","large-width":1024,"large-height":1024,"1536x1536":"https:\/\/sano.science\/wp-content\/uploads\/2023\/05\/linkedin.svg","1536x1536-width":1,"1536x1536-height":1,"2048x2048":"https:\/\/sano.science\/wp-content\/uploads\/2023\/05\/linkedin.svg","2048x2048-width":1,"2048x2048-height":1}},"link":"https:\/\/www.linkedin.com\/in\/agus-hartoyo-a0a17a73\/","name":"LinkedIn"}],"tabs":false,"quote":"","position_with_team":{"text_before_link":"PostDoc in","link_text":"Computer Vision (Computational Neuroscience)","text_after_link":"","link":"https:\/\/sano.science\/research-teams\/computer-vision-brain-and-more-lab\/"},"publications":[{"ID":17163,"post_author":"8","post_date":"2024-06-12 18:14:22","post_date_gmt":"2024-06-12 16:14:22","post_content":"<!-- wp:heading {\"epAnimationGeneratedClass\":\"edplus_anim-tNFDKI\",\"epGeneratedClass\":\"eplus-wrapper\"} -->\n<h2 class=\"wp-block-heading eplus-wrapper\">Authors: Agus Hartoyo, Jan K. Argasi\u0144ski, Aleksandra Trenk, Kinga Przybylska, Anna B\u0142asiak, Alessandro Crimi<\/h2>\n<!-- \/wp:heading -->\n\n<!-- wp:spacer {\"height\":\"20px\",\"epAnimationGeneratedClass\":\"edplus_anim-5WDO6d\",\"epGeneratedClass\":\"eplus-wrapper\"} -->\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer eplus-wrapper\"><\/div>\n<!-- \/wp:spacer -->\n\n<!-- wp:paragraph {\"epAnimationGeneratedClass\":\"edplus_anim-Vsv85h\",\"epGeneratedClass\":\"eplus-wrapper\"} -->\n<p class=\" eplus-wrapper\">Covariance and Hessian matrices have been analyzed separately in the literature for classification problems. However, integrating these matrices has the potential to enhance their combined power in improving classification performance. We present a novel approach that combines the eigenanalysis of a covariance matrix evaluated on a training set with a Hessian matrix evaluated on a deep learning model to achieve optimal class separability in binary classification tasks. Our approach is substantiated by formal proofs that establish its capability to maximize between-class mean distance and minimize within-class variances. By projecting data into the combined space of the most relevant eigendirections from both matrices, we achieve optimal class separability as per the linear discriminant analysis (LDA) criteria. Empirical validation across neural and health datasets consistently supports our theoretical framework and demonstrates that our method outperforms established methods. Our method stands out by addressing both LDA criteria, unlike PCA and the Hessian method, which predominantly emphasize one criterion each. This comprehensive approach captures intricate patterns and relationships, enhancing classification performance. Furthermore, through the utilization of both LDA criteria, our method outperforms LDA itself by leveraging higher-dimensional feature spaces, in accordance with Cover's theorem, which favors linear separability in higher dimensions. Our method also surpasses kernel-based methods and manifold learning techniques in performance. Additionally, our approach sheds light on complex DNN decision-making, rendering them comprehensible within a 2D space.<\/p>\n<!-- \/wp:paragraph -->","post_title":"Synergistic eigenanalysis of covariance and Hessian matrices for enhanced binary classification on health datasets","post_excerpt":"In: https:\/\/arxiv.org\/abs\/2402.09281, 2024","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"synergistic-eigenanalysis-of-covariance-and-hessian-matrices-for-enhanced-binary-classification-on-health-datasets","to_ping":"","pinged":"","post_modified":"2024-09-23 12:57:38","post_modified_gmt":"2024-09-23 10:57:38","post_content_filtered":"","post_parent":0,"guid":"https:\/\/sano.science\/?post_type=research&p=17163","menu_order":0,"post_type":"research","post_mime_type":"","comment_count":"0","filter":"raw"}]},"_links":{"self":[{"href":"https:\/\/sano.science\/index.php\/wp-json\/wp\/v2\/people\/11955","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sano.science\/index.php\/wp-json\/wp\/v2\/people"}],"about":[{"href":"https:\/\/sano.science\/index.php\/wp-json\/wp\/v2\/types\/people"}],"version-history":[{"count":8,"href":"https:\/\/sano.science\/index.php\/wp-json\/wp\/v2\/people\/11955\/revisions"}],"predecessor-version":[{"id":20083,"href":"https:\/\/sano.science\/index.php\/wp-json\/wp\/v2\/people\/11955\/revisions\/20083"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sano.science\/index.php\/wp-json\/wp\/v2\/media\/18630"}],"wp:attachment":[{"href":"https:\/\/sano.science\/index.php\/wp-json\/wp\/v2\/media?parent=11955"}],"wp:term":[{"taxonomy":"people_teams","embeddable":true,"href":"https:\/\/sano.science\/index.php\/wp-json\/wp\/v2\/people_teams?post=11955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}