{"id":494324,"date":"2026-06-15T19:26:10","date_gmt":"2026-06-15T19:26:10","guid":{"rendered":"https:\/\/www.newsbeep.com\/il\/494324\/"},"modified":"2026-06-15T19:26:10","modified_gmt":"2026-06-15T19:26:10","slug":"solar-system-technosignatures-astrobiology","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/il\/494324\/","title":{"rendered":"Solar System Technosignatures &#8211; Astrobiology"},"content":{"rendered":"<p>\n                                    Status Report                                <\/p>\n<p>\n                                    cs.LG                                <\/p>\n<p>\n                                    June 15, 2026                                <\/p>\n<p>                                    <img decoding=\"async\" src=\"https:\/\/www.newsbeep.com\/il\/wp-content\/uploads\/2026\/06\/Solar-System.png\" alt=\"Solar System Technosignatures\"\/><\/p>\n<p>                                                                                                            Using spectra to distinguish a (passive) probe from a natural object. These near-IR spectra were obtained for the object classified initially as 2020 SO. These spectra show characteristics consistent with the object instead being a Centaur rocket body, leading to its identification as such. (Adapted from and reproduced with permission from \u201cSpectral Characterization of 2020 SO,\u201d Reddy et al., original copyright \u00a9 2001 Advanced Maui Optical and Space Surveillance Technologies Conference [AMOS], <a href=\"https:\/\/doi.org\/10.64861\/WYST9178\" rel=\"nofollow noopener\" target=\"_blank\">https:\/\/doi.org\/10.64861\/WYST9178<\/a>)                                                                                                    <\/p>\n<p>While prompt-based parameter-efficient continual learning mitigates catastrophic forgetting by isolating task-specific prompts, this isolation also limits later tasks from improving earlier ones, leaving backward knowledge transfer underexplored.<\/p>\n<p>We address this limitation by proposing Selective bAckward refinement for positive Backward knowledge transfER (SABER), a replay-free framework that enables controlled backward transfer in prompt-based continual learning.<\/p>\n<p>SABER determines when backward refinement is beneficial using complementary task-correlation criteria based on prompt-gradient geometry and loss-distribution similarity, and how to perform refinement safely by restricting updates to non-interfering directions in the prompt parameter space.<\/p>\n<p>Extensive experiments across multiple continual learning benchmarks and diverse pretrained backbones, including T5-Large, LLaMA, and Qwen, demonstrate that SABER consistently achieves positive backward transfer while maintaining strong overall average performance. Code is available at <a href=\"https:\/\/www.iau.org\/Iau\/Science\/Scientific-Meetings\/IAUM2026\/IAUS404.aspx\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/www.iau.org\/Iau\/Science\/Scientific-Meetings\/IAUM2026\/IAUS404.aspx<\/a><\/p>\n<p>Anushka Tiwari, Kaiyi Ji<\/p>\n<p>Comments: Accepted at ICML 2026<br \/>Subjects: Machine Learning (cs.LG)<br \/>Cite as: arXiv:2606.01379 [cs.LG] (or arXiv:2606.01379v2 [cs.LG] for this version)<br \/><a href=\"https:\/\/doi.org\/10.48550\/arXiv.2606.01379\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/doi.org\/10.48550\/arXiv.2606.01379<\/a><br \/>Focus to learn more<br \/>Submission history<br \/>From: Anushka Tiwari<br \/>[v1] Sun, 31 May 2026 18:08:24 UTC (3,252 KB)<br \/>[v2] Sun, 7 Jun 2026 14:03:46 UTC (3,252 KB)<br \/><a href=\"https:\/\/arxiv.org\/abs\/2606.13797\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/arxiv.org\/abs\/2606.13797<\/a><br \/>Astrobiology, SETI,<\/p>\n<p>                                                                            <img decoding=\"async\" src=\"https:\/\/www.newsbeep.com\/il\/wp-content\/uploads\/2025\/09\/keith_cowing.jpg\" alt=\"\"\/><\/p>\n<p>Biologist, Explorers Club Fellow, ex-NASA Space Biologist and Payload integrator, Editor of NASAWatch.com and Astrobiology.com, Lapsed climber, Explorer, Synaesthete, Former Challenger Center board member \ud83d\udd96\ud83c\udffb<\/p>\n","protected":false},"excerpt":{"rendered":"Status Report cs.LG June 15, 2026 Using spectra to distinguish a (passive) probe from a natural object. These&hellip;\n","protected":false},"author":2,"featured_media":494325,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[68737,345,227777,85,4427,46,141,120494],"class_list":["post-494324","post","type-post","status-publish","format-standard","has-post-thumbnail","category-science","tag-technosignature","tag-ai","tag-cs-lg","tag-il","tag-intelligence","tag-israel","tag-science","tag-seti"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts\/494324","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/comments?post=494324"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts\/494324\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/media\/494325"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/media?parent=494324"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/categories?post=494324"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/tags?post=494324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}