{"id":9635,"date":"2025-11-20T10:24:25","date_gmt":"2025-11-20T09:24:25","guid":{"rendered":"https:\/\/websrv.saske.sk\/uef\/?p=9635"},"modified":"2025-11-21T15:12:33","modified_gmt":"2025-11-21T14:12:33","slug":"strojove-ucenie-prekonava-klasicke-metody-v-predpovedani-intenzit-kozmickeho-ziarenia-v-blizkosti-zeme","status":"publish","type":"post","link":"https:\/\/websrv.saske.sk\/uef\/strojove-ucenie-prekonava-klasicke-metody-v-predpovedani-intenzit-kozmickeho-ziarenia-v-blizkosti-zeme\/","title":{"rendered":"Strojov\u00e9 u\u010denie prekon\u00e1va klasick\u00e9 met\u00f3dy v predpovedan\u00ed intenz\u00edt kozmick\u00e9ho \u017eiarenia v bl\u00edzkosti Zeme"},"content":{"rendered":"

Kozmick\u00e9 \u017eiarenie tvoria vysokoenergetick\u00e9 \u010dastice, ktor\u00e9 neust\u00e1le bombarduj\u00fa Zem z vesm\u00edru a s\u00fa ovplyvnen\u00e9 magnetickou aktivitou Slnka. Ke\u010f je Slnko akt\u00edvne, na Zem doraz\u00ed menej t\u00fdchto \u010dast\u00edc a ke\u010f je Slnko pokojn\u00e9, je ich viac. Pochopenie t\u00fdchto vari\u00e1ci\u00ed je nevyhnutn\u00e9 pre v\u00fdskum vesm\u00edrneho po\u010dasia, bezpe\u010dnos\u0165 astronautov, prev\u00e1dzku satelitov a letectvo.<\/strong><\/p>\n

Vedci u\u017e desa\u0165ro\u010dia \u010dasto pou\u017e\u00edvaj\u00fa zjednodu\u0161en\u00fd pr\u00edstup naz\u00fdvan\u00fd aproxim\u00e1cia silov\u00e9ho po\u013ea na odhad toho, ako slne\u010dn\u00e1 aktivita ovplyv\u0148uje kozmick\u00e9 \u017eiarenie v bl\u00edzkosti Zeme. T\u00e1to met\u00f3da je jednoduch\u00e1 a \u013eahko sa pou\u017e\u00edva v mnoh\u00fdch aplik\u00e1ci\u00e1ch. Nov\u00e1 \u0161t\u00fadia publikovan\u00e1 v \u010dasopise Journal of Geophysical Research: Machine Learning and Computation ukazuje, \u017ee modern\u00e9 techniky strojov\u00e9ho u\u010denia dok\u00e1\u017eu dosiahn\u00fa\u0165 lep\u0161ie v\u00fdsledky.<\/p>\n

V\u00fdskumn\u00edci testovali nieko\u013eko modelov strojov\u00e9ho u\u010denia, aby zistili, ako dobre dok\u00e1\u017eu reprodukova\u0165 ka\u017edodenn\u00e9 zmeny intenzity kozmick\u00e9ho \u017eiarenia, pri\u010dom pou\u017eili takmer 3 000 denn\u00fdch meran\u00ed z experimentu AMS-02 na palube Medzin\u00e1rodnej vesm\u00edrnej stanice, \u010do je najpresnej\u0161\u00ed dlhodob\u00fd z\u00e1znam prot\u00f3nov kozmick\u00e9ho \u017eiarenia, ak\u00fd bol kedy zozbieran\u00fd. V\u00fdsledky uk\u00e1zali, \u017ee modely strojov\u00e9ho u\u010denia poskytuj\u00fa presnej\u0161ie predpovede ako tradi\u010dn\u00e1 met\u00f3da silov\u00e9ho po\u013ea. Najlep\u0161\u00ed model, XGBoost, dosiahol vynikaj\u00facu zhodu s \u00fadajmi AMS-02 s hodnotami R\u00b2 nad 0,9 pre ni\u017e\u0161ie energie. Medzi \u010fal\u0161ie testovan\u00e9 met\u00f3dy patrili Random Forest, SGDR, SVM, Transformer a Linear Regression.<\/p>\n

Tieto zistenia ukazuj\u00fa, \u017ee strojov\u00e9 u\u010denie dok\u00e1\u017ee zachyti\u0165 charakteristiky spr\u00e1vania kozmick\u00e9ho \u017eiarenia, \u010d\u00edm otv\u00e1raj\u00fa dvere k zlep\u0161eniu predpoved\u00ed vesm\u00edrneho po\u010dasia a lep\u0161iemu modelovaniu radia\u010dn\u00e9ho prostredia okolo Zeme.<\/p>\n

Cit\u00e1cia: Reference: Nguyen, M., Bob\u00edk, P., & Gen\u010di, J. (2025). Approximation of daily AMS\u201002 spectra with machine learning methods. Journal of Geophysical Research: Machine Learning and Computation, 2, e2025JH000676.
\nhttps:\/\/doi.org\/10.1029\/2025JH000676<\/a><\/p>\n

 <\/p>\n

Text: P. Bob\u00edk<\/p>\n

 <\/p>\n

Cosmic ray proton fluxes: AMS\u201002 data (red dots), XGBoost (blue dots), and force field (black dots) for first bin (1.00\u20131.16 GV), eleventh bin (3.29\u20133.64 GV), sixteenth bin (5.37\u20135.90 GV), and twenty\u2010third bin (10.10\u201311.00 GV).<\/p>\n

\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Kozmick\u00e9 \u017eiarenie tvoria vysokoenergetick\u00e9 \u010dastice, ktor\u00e9 neust\u00e1le bombarduj\u00fa Zem z vesm\u00edru a s\u00fa ovplyvnen\u00e9 magnetickou aktivitou Slnka. Ke\u010f je Slnko akt\u00edvne, na Zem doraz\u00ed menej…<\/p>\n","protected":false},"author":11,"featured_media":9643,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/posts\/9635"}],"collection":[{"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/comments?post=9635"}],"version-history":[{"count":5,"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/posts\/9635\/revisions"}],"predecessor-version":[{"id":9644,"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/posts\/9635\/revisions\/9644"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/media\/9643"}],"wp:attachment":[{"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/media?parent=9635"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/categories?post=9635"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/tags?post=9635"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}