{"id":4609,"date":"2025-11-09T21:10:29","date_gmt":"2025-11-09T21:10:29","guid":{"rendered":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/?p=4609"},"modified":"2025-11-09T21:27:41","modified_gmt":"2025-11-09T21:27:41","slug":"checkpoint-metadata-mismatch-tolerance-for-rf-modulation-classifiers","status":"publish","type":"post","link":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/?p=4609","title":{"rendered":"Checkpoint\/Metadata Mismatch Tolerance for RF Modulation Classifiers"},"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=\"48fDCNk0wM\"><a href=\"https:\/\/172-234-197-23.ip.linodeusercontent.com\/?page_id=4605\">Checkpoint\/Metadata Mismatch Tolerance for RF Modulation Classifiers<\/a><\/blockquote><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8220;Checkpoint\/Metadata Mismatch Tolerance for RF Modulation Classifiers&#8221; &#8212; Spectrcyde\" src=\"https:\/\/172-234-197-23.ip.linodeusercontent.com\/?page_id=4605&#038;embed=true#?secret=AatuFbuWzd#?secret=48fDCNk0wM\" data-secret=\"48fDCNk0wM\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Deploy Your RF Classifier Without Fear \u2014 Introducing Checkpoint Mismatch Tolerance<\/strong><\/h3>\n\n\n\n<p><em>By Ben Gilbert | November 9, 2025<\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>You trained a perfect RF modulation classifier on [&#8216;AM&#8217;, &#8216;FM&#8217;, &#8216;PSK&#8217;].<\/strong> <strong>Now your customer wants [&#8216;AM-DSB&#8217;, &#8216;FM&#8217;, &#8216;QPSK&#8217;].<\/strong> <strong>Do you retrain?<\/strong> <strong>No. You just deploy \u2014 and it <em>just works<\/em>.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>TA Drop-In Loader That <em>Recovers<\/em><\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Training<\/th><th>Deployment<\/th><\/tr><\/thead><tbody><tr><td><code>AM<\/code>, <code>FM<\/code>, <code>PSK<\/code><\/td><td><code>AM-DSB<\/code>, <code>FM<\/code>, <code>QPSK<\/code><\/td><\/tr><tr><td><code>BPSK<\/code>, <code>QPSK<\/code><\/td><td><code>BPSK<\/code>, <code>8PSK<\/code><\/td><\/tr><tr><td><code>CW<\/code>, <code>FSK<\/code><\/td><td><code>GFSK<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>model, M = load_from_checkpoint(\n    'model.pt', \n    runtime_classes=&#91;'AM-DSB', 'FM', 'QPSK'],\n    strategy='auto'\n)<\/code><\/pre>\n\n\n\n<p><strong>What happens under the hood?<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Name Remap<\/strong> \u2192 AM \u2192 AM-DSB, FM \u2192 FM<\/li>\n\n\n\n<li><strong>Hungarian Calibration<\/strong> \u2192 PSK \u2192 QPSK (using 50 labeled samples)<\/li>\n\n\n\n<li><strong>Output Mapping<\/strong> \u2192 p_deployed = M @ p_checkpoint<\/li>\n<\/ol>\n\n\n\n<p><strong>No retraining. No downtime. &lt; 10 ms.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>How It Works: The Fallback Chain<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-opt-id=1512077333  fetchpriority=\"high\" decoding=\"async\" width=\"868\" height=\"860\" src=\"https:\/\/ml6vmqguit1n.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/172-234-197-23.ip.linodeusercontent.com\/wp-content\/uploads\/2025\/11\/image-20.png\" alt=\"\" class=\"wp-image-4615\" srcset=\"https:\/\/ml6vmqguit1n.i.optimole.com\/w:868\/h:860\/q:mauto\/f:best\/https:\/\/172-234-197-23.ip.linodeusercontent.com\/wp-content\/uploads\/2025\/11\/image-20.png 868w, https:\/\/ml6vmqguit1n.i.optimole.com\/w:300\/h:297\/q:mauto\/f:best\/https:\/\/172-234-197-23.ip.linodeusercontent.com\/wp-content\/uploads\/2025\/11\/image-20.png 300w, https:\/\/ml6vmqguit1n.i.optimole.com\/w:150\/h:150\/q:mauto\/f:best\/https:\/\/172-234-197-23.ip.linodeusercontent.com\/wp-content\/uploads\/2025\/11\/image-20.png 150w, https:\/\/ml6vmqguit1n.i.optimole.com\/w:768\/h:761\/q:mauto\/f:best\/https:\/\/172-234-197-23.ip.linodeusercontent.com\/wp-content\/uploads\/2025\/11\/image-20.png 768w\" sizes=\"(max-width: 868px) 100vw, 868px\" \/><\/figure>\n\n\n\n<p>In Other News:<\/p>\n\n\n\n<p>NSIS Examples  &gt;&gt;  <a href=\"https:\/\/chatgpt.com\/share\/69110307-76f4-800d-89da-96f8d69ab4db\">https:\/\/chatgpt.com\/share\/69110307-76f4-800d-89da-96f8d69ab4db<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Deploy Your RF Classifier Without Fear \u2014 Introducing Checkpoint Mismatch Tolerance By Ben Gilbert | November 9, 2025 You trained a perfect RF modulation classifier on [&#8216;AM&#8217;, &#8216;FM&#8217;, &#8216;PSK&#8217;]. Now your customer wants [&#8216;AM-DSB&#8217;, &#8216;FM&#8217;, &#8216;QPSK&#8217;]. Do you retrain? No. You just deploy \u2014 and it just works. TA Drop-In Loader That Recovers Training Deployment&hellip;&nbsp;<a href=\"https:\/\/172-234-197-23.ip.linodeusercontent.com\/?p=4609\" rel=\"bookmark\"><span class=\"screen-reader-text\">Checkpoint\/Metadata Mismatch Tolerance for RF Modulation Classifiers<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":4611,"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":[6,10],"tags":[],"class_list":["post-4609","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-signal-science","category-signal_scythe"],"_links":{"self":[{"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=\/wp\/v2\/posts\/4609","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=4609"}],"version-history":[{"count":3,"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=\/wp\/v2\/posts\/4609\/revisions"}],"predecessor-version":[{"id":4616,"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=\/wp\/v2\/posts\/4609\/revisions\/4616"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=\/wp\/v2\/media\/4611"}],"wp:attachment":[{"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/172-234-197-23.ip.linodeusercontent.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}