{"id":3670,"date":"2025-09-22T18:41:40","date_gmt":"2025-09-22T18:41:40","guid":{"rendered":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/?p=3670"},"modified":"2025-09-22T18:41:41","modified_gmt":"2025-09-22T18:41:41","slug":"few-shot-characterisation-of-black-box-rf-fitting-with-gaussian-processes","status":"publish","type":"post","link":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/?p=3670","title":{"rendered":"Few-Shot Characterisation of Black-Box RF Fitting with Gaussian Processes"},"content":{"rendered":"\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-spectrcyde wp-block-embed-spectrcyde\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"4uKPac2eiA\"><a href=\"https:\/\/172-234-197-23.ip.linodeusercontent.com\/?page_id=3667\">Few-Shot Characterisation of Black-Box RF Fitting with Gaussian Processes<\/a><\/blockquote><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8220;Few-Shot Characterisation of Black-Box RF Fitting with Gaussian Processes&#8221; &#8212; Spectrcyde\" src=\"https:\/\/172-234-197-23.ip.linodeusercontent.com\/?page_id=3667&#038;embed=true#?secret=PTOCc7HqnN#?secret=4uKPac2eiA\" data-secret=\"4uKPac2eiA\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>Accurately characterising the performance of black-box RF demodulation pipelines normally<br>requires dense sweeps over many parameters, incurring high computational cost[1]. Gaussian<br>process (GP) surrogate models provide smooth interpolants and predictive uncertainty, enabling<br>efficient exploration[1]. This paper investigates how many targeted runs are needed to reconstruct a smooth performance field and whether the GP uncertainty estimates are well calibrated.<br>A synthetic two-dimensional performance function serves as the ground truth. We sample N<br>points uniformly at random, fit a GP to the observations and evaluate the root mean-squared error (RMSE) and mean predictive uncertainty on a dense grid. Results show that modest sample<br>sizes (N in the tens) yield low RMSE and that predictive uncertainty decays at a similar rate.<br>Calibration curves illustrate that the GP standard deviation provides reasonably accurate confidence intervals[2]. These findings support using few-shot GP characterisation for deployment<br>planning in RF systems.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Accurately characterising the performance of black-box RF demodulation pipelines normallyrequires dense sweeps over many parameters, incurring high computational cost[1]. Gaussianprocess (GP) surrogate models provide smooth interpolants and predictive uncertainty, enablingefficient exploration[1]. This paper investigates how many targeted runs are needed to reconstruct a smooth performance field and whether the GP uncertainty estimates are well calibrated.A&hellip;&nbsp;<a href=\"https:\/\/172-234-197-23.ip.linodeusercontent.com\/?p=3670\" rel=\"bookmark\"><span class=\"screen-reader-text\">Few-Shot Characterisation of Black-Box RF Fitting with Gaussian Processes<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":2705,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[10],"tags":[],"class_list":["post-3670","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-signal_scythe"],"_links":{"self":[{"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=\/wp\/v2\/posts\/3670","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3670"}],"version-history":[{"count":1,"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=\/wp\/v2\/posts\/3670\/revisions"}],"predecessor-version":[{"id":3671,"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=\/wp\/v2\/posts\/3670\/revisions\/3671"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=\/wp\/v2\/media\/2705"}],"wp:attachment":[{"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3670"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3670"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3670"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}