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I-ROC Curves kanye ne-AUC

Ijika le-ROC lihlela ukuthi umenzi wezigaba uwahlukanisa kanjani amakilasi amabili kuwo wonke umkhawulo wesinqumo ongase ube khona, futhi i-AUC icindezela lelo jika lonke libe inombolo eyodwa.

Uhlolojikelele

Ijika le-ROC lihlela ukuthi umenzi wezigaba uwahlukanisa kanjani amakilasi amabili kuwo wonke umkhawulo wesinqumo ongase ube khona, futhi i-AUC icindezela lelo jika lonke libe inombolo eyodwa. Ndawonye bakutshela izinga lezinga elizimele lapho udweba khona umnqamulajuqu.

I-ROC Curves ne-AUC ihlezi kukhithi yamathuluzi eyinhloko ye-AI. Uma uyiqonda, ezinye izihloko ze-AI ziba lula ukuzihlola nokuqhathanisa.

I-Deep Dive

Ijika Lokusebenza Kwesamukeli (ROC) lihlela Izinga Leqiniso Elihle (ukuzwela, ku-axis ka-y) ngokumelene Nezinga Elihle Amanga (ukucaciswa kokukhipha okungu-1, ku-eksisi ka-x) njengoba uslayida umkhawulo wokuhlukanisa ukusuka ku-1 wehle uye ku-0. Umkhawulo ngamunye unikeza iphuzu elilodwa; ukuzihlanganisa kulandelela ijika. Imodeli elinganisa konke okuhle ngaphezu kwayo yonke i-negative ingala ekhoneni eliphezulu kwesokunxele. I-Area Under the Curve (AUC) ikala indawo ephelele engaphansi kwalo mugqa, kusukela ku-0.5 (ukuqagela okungahleliwe, i-diagonal) kuya ku-1.0 (ephelele). Ukuhumusha okuwusizo: I-AUC ilingana namathuba okuthi imodeli ithole iphozithivu ekhethwe ngokungahleliwe ngaphezu kwenegethivu ekhethwe ngokungahleliwe. Igama livela kubaqhubi be-radar beMpi Yezwe II abahlukanisa isignali nomsindo.

I-Technical Insight

I-AUC ayizimele ngoba ihlanganisa ukusebenza kukho konke ukunqanyulwa, ngakho-ke ayithintwa lapho ubeka khona umngcele wesinqumo. Ilingana ngokwezibalo nezibalo ze-Mann-Whitney U kanye nokuhlolwa kwerenki ye-Wilcoxon, okusho ukuthi kuncike kuphela ekuhleleni izinga lezikolo ezibikezelwe, hhayi amanani awo aphelele. Lokhu kuyenza izinze ngaphansi kokuguqulwa kwamaphuzu we-monotonic kodwa futhi ingazweli ekulinganisweni: imodeli ebekwe kahle kodwa engalinganiswanga kahle isengathola i-AUC ephezulu.

I-Mastering ROC Curves kanye ne-AUC

Ijika le-ROC lihlela ukuthi umenzi wezigaba uwahlukanisa kanjani amakilasi amabili kuwo wonke umkhawulo wesinqumo ongase ube khona, futhi i-AUC icindezela lelo jika lonke libe inombolo eyodwa. Ndawonye bakutshela izinga lezinga elizimele lapho udweba khona umnqamulajuqu. I-ROC Curves ne-AUC ihlezi kukhithi yamathuluzi eyinhloko ye-AI. Uma uyiqonda, ezinye izihloko ze-AI ziba lula ukuzihlola nokuqhathanisa. Ukuze wakhe ukuqonda okujulile, phatha i-ROC Curves ne-AUC njengemodeli yokusebenza, hhayi isici esisodwa: chaza imiphumela efiselekayo, ucacise ukucabanga, futhi uhlukanise lokho uhlelo olungakwenza ngokwethembeka kulokho okusadinga ukwahlulela kochwepheshe.

Empeleni, amaqembu aqinile asebenzisa i-ROC Curves ne-AUC akha amamodeli engqondo aqinile kuqala, bese ebeka lawo mamodeli emikhawulweni yokukhiqiza yangempela. Babhala imibandela yempumelelo ecacile, ukuhlola okuqhathaniswa nedatha engokoqobo nokugeleza komsebenzi, futhi baphindaphinde ngokusekelwe kumaphethini okuhluleka aqashiwe esikhundleni sokuwina kwebhentshimakhi yesikhathi esisodwa. Yilapho ukuqonda kwethiyori kuguquka kube amandla ahlala njalo kuwo wonke umkhiqizo, inqubomgomo, kanye nokusebenza.

Kukusiza ukuthi uhlukanise izimangalo ezicacile zobuchwepheshe kusukela olimini lokumaketha. Ngesikhathi esifanayo, amaqembu ahlukene angasebenzisa igama elifanayo ngokuhlukile, ngakho chaza ububanzi kusenesikhathi. Indlela eqine kakhulu iwukuhlanganisa isivinini sokuhlola nesiyalo sokuphatha: qhuba abashayeli bezindiza, bamba ubufakazi, ushicilele amalogi ezinqumo, futhi ubuyekeze izivikelo ngokuqhubekayo njengoba imodeli yokuziphatha, okulindelwe ngabasebenzisi, kanye nezimfuneko zokulawula zishintsha.

I-Strategic Impact

Kukusiza ukuthi uhlukanise izimangalo ezicacile zobuchwepheshe kusukela olimini lokumaketha.

Kukusiza ukuthi uhlukanise izimangalo ezicacile zobuchwepheshe kusukela olimini lokumaketha. Ekusetshenzisweni kwekhwalithi ephezulu, lokhu kuhunyushwa emithethweni yokusebenza elinganisekayo, imingcele yobunikazi, nemikhuba yokubuyekeza ephindelelayo ukuze amaqembu akwazi ukukala ukuzethemba esikhundleni sokukala ukungaqondakali.

Ungabuza imibuzo yokusebenzisa kangcono ngaphambi kokusebenzisa imali noma isikhathi.

Ungabuza imibuzo yokusebenzisa kangcono ngaphambi kokusebenzisa imali noma isikhathi. Ekusetshenzisweni kwekhwalithi ephezulu, lokhu kuhunyushwa emithethweni yokusebenza elinganisekayo, imingcele yobunikazi, nemikhuba yokubuyekeza ephindelelayo ukuze amaqembu akwazi ukukala ukuzethemba esikhundleni sokukala ukungaqondakali.

Amaqembu anokuqonda okwabiwe enza izinqumo ezingcono zomkhiqizo, inqubomgomo, nokufunda.

Amaqembu anokuqonda okwabiwe enza izinqumo ezingcono zomkhiqizo, inqubomgomo, nokufunda. Ekusetshenzisweni kwekhwalithi ephezulu, lokhu kuhunyushwa emithethweni yokusebenza elinganisekayo, imingcele yobunikazi, nemikhuba yokubuyekeza ephindelelayo ukuze amaqembu akwazi ukukala ukuzethemba esikhundleni sokukala ukungaqondakali.

Ikusasa le-ROC Curves kanye ne-AUC

I-ROC-AUC isalokhu iyimethrikhi yokubika ezenzakalelayo, kodwa odokotela bayanda ukuyibhangqa namajika we-Precision-Recall ukuze uthole idatha engalingani kakhulu, lapho i-ROC ingabukeka inethemba elikhohlisayo. Lindela ukwamukelwa okubanzi kwe-AUC eyingxenye (egxile esifundeni esinamanga aphansi esibalulekile ekusebenzeni), ukuhlaziya okubucayi nejika lesinqumo, kanye nokubika kwe-AUC yeqembu ngalinye ezikhaleni zokulunga. Njengoba amamodeli ephakela izinqumo zangempela, amamethrikhi okulinganisa ne-AUC azobikwa ngokuhambisana kune-AUC yodwa.

Ukuqaliswa Komhlaba Wangempela

Ukuqhathanisa amamodeli amabili okuthola ukukhwabanisa kwebhange nge-AUC yalo ukuze likhethe leyo elinganisa kahle kakhulu imisebenzi yomgunyathi ngaphezu kwaleyo esemthethweni.

Ukuhlola ukuhlolwa kokuxilonga kwesifo (isb., isigaba sokuhlola umdlavuza) lapho ama-radiologists kudingeka ahwebe ukuze abambe amacala amaningi ngokumelene nama-alamu angamanga

Ukushuna umkhawulo wesihlungi sogaxekile usebenzisa ijika le-ROC ukuze ugcine amaphuzu angamanga (imeyili esemthethweni imakwe njengogaxekile) iphansi kakhulu

Ukulinganisa imodeli yamaphuzu esikweletu-okuzenzakalelayo lapho i-AUC ifingqa ukuthi ibahlukanisa kahle kanjani ababolekayo ababuyisayo kulabo abahlulekayo.

Amaphethini Okusebenzisa

I-ROC Curves kanye ne-AUC ekusebenzeni

Ukuqhathanisa amamodeli amabili okuthola ukukhwabanisa kwebhange nge-AUC yalo ukuze likhethe leyo elinganisa kahle imisebenzi yokukhwabanisa ngaphezu kwezisemthethweni.

Ukuqhathanisa amamodeli amabili okuthola ukukhwabanisa ebhange nge-AUC yalo ukuze likhethe lelo elilinganisa kangcono imisebenzi yokukhwabanisa ngaphezu kwezisemthethweni Amaqembu ngokuvamile athola imiphumela engcono lapho echaza izilinganiso zekhwalithi ngaphambili, agcine indlela yokukhuphuka kwabantu yamacala asemaphethelweni, futhi alandelele kokubili izinzuzo zokukhiqiza nezindleko zamaphutha ngokuhamba kwesikhathi.

I-ROC Curves kanye ne-AUC ekusebenzeni

Ukuhlola ukuhlolwa kokuxilonga kwesifo (isb., isigaba sokuhlola umdlavuza) lapho ama-radiologists adinga ukuhwebelana ngokubamba izimo eziningi ngokumelene nama-alamu angamanga.

Ukuhlola ukuhlolwa kokuxilonga kwesifo (isb., isigaba sokuhlola umdlavuza) lapho izazi ze-radiologists zidinga ukuhwebelana ngokubamba amacala amaningi ngokumelene nama-alamu angamanga Amaqembu ngokuvamile athola imiphumela engcono uma echaza imikhawulo yekhwalithi ngaphambili, agcina indlela yokukhuphuka komuntu ezimweni ezibucayi, futhi alandelele kokubili izinzuzo zokukhiqiza nezindleko zamaphutha ngokuhamba kwesikhathi.

I-ROC Curves kanye ne-AUC ekusebenzeni

Ukushuna umkhawulo wesihlungi sogaxekile kusetshenziswa ijika le-ROC ukuze kugcinwe amaphuzu angamanga (imeyili esemthethweni imakwe njengogaxekile) iphansi kakhulu.

Ukushuna umkhawulo wesihlungi sogaxekile kusetshenziswa ijika le-ROC ukuze kugcinwe amaphuzu angamanga (imeyili esemthethweni emakwe njengogaxekile) iphansi kakhulu Amaqembu ngokuvamile athola imiphumela engcono uma echaza imikhawulo yekhwalithi ngaphambili, agcine indlela yokukhuphuka yomuntu yamakesi asemaphethelweni, futhi alandelele kokubili izinzuzo zokukhiqiza nezindleko zamaphutha ngokuhamba kwesikhathi.

I-ROC Curves kanye ne-AUC ekusebenzeni

Ukulinganisa imodeli yokukhokha ezenzakalelayo lapho i-AUC ifingqa ukuthi ibahlukanisa kahle kanjani ababolekayo abakhokhayo kulabo abangakhokhi.

Ukulinganisa imodeli yokukhokha ezenzakalelayo lapho i-AUC ifingqa ukuthi ibahlukanisa kahle kanjani ababolekayo abakhokhayo kulabo abakhokha iphutha Amaqembu ngokuvamile athola imiphumela engcono lapho echaza izilinganiso zekhwalithi ngaphambili, agcine indlela yokukhuphuka kwabantu yamacala abucayi, futhi alandelele kokubili izinzuzo zokukhiqiza nezindleko zamaphutha ngokuhamba kwesikhathi.

Izingozi & Guardrails

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Amaqembu ahlukene angasebenzisa igama elifanayo ngokuhlukile, ngakho chaza ububanzi kusenesikhathi.

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Amabhentshimakhi angabukeka eqinile kuyilapho ukusebenza komhlaba wangempela kungalingani.

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Ukuziba ikhwalithi yedatha nezinhlelo zokuhlaziya kuvame ukudala imiphumela entekenteke.

Ukuqalisa Umhlahlandlela

1

Qala ngencazelo yolimi olulula yomphumela oyidingayo.

Qala ngencazelo yolimi olulula yomphumela oyidingayo. Phatha isinyathelo ngasinye njengesango lobufakazi: uma imibandela ingafinyelelwa, misa ukukhishwa, vala igebe, bese unweba ukusetshenziswa.

2

Khetha imethrikhi eyodwa yempumelelo nesimo esisodwa sokuhluleka ngaphambi kokuhlolwa.

Khetha imethrikhi eyodwa yempumelelo nesimo esisodwa sokuhluleka ngaphambi kokuhlolwa. Phatha isinyathelo ngasinye njengesango lobufakazi: uma imibandela ingafinyelelwa, misa ukukhishwa, vala igebe, bese unweba ukusetshenziswa.

3

Qalisa umshayeli omncane onedatha emele, hhayi isethi yedemo ephucuziwe.

Qalisa umshayeli omncane onedatha emele, hhayi isethi yedemo ephucuziwe. Phatha isinyathelo ngasinye njengesango lobufakazi: uma imibandela ingafinyelelwa, misa ukukhishwa, vala igebe, bese unweba ukusetshenziswa.

4

Idokhumenti lapho i-ROC Curves ne-AUC isiza khona nalapho izindlela ezilula zingcono.

Idokhumenti lapho i-ROC Curves ne-AUC isiza khona nalapho izindlela ezilula zingcono. Phatha isinyathelo ngasinye njengesango lobufakazi: uma imibandela ingafinyelelwa, misa ukukhishwa, vala igebe, bese unweba ukusetshenziswa.

Qhubeka Uhlole

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