Ukunemba nokukhumbula
Ukunemba nokukhumbula amamethrikhi amabili ahambisanayo okuhlola abahlukanisi bezigaba, ikakhulukazi uma amakilasi engalingani.
Uhlolojikelele
Together they reveal what plain accuracy hides — how often a model's positive predictions are right, and how many real positives it actually catches.
I-Deep Dive
Uma imodeli ihlaba umkhosi izinto njengezinhle, imibuzo emibili ibalulekile. I-Precision iyabuza: kukho konke esikuhlabe umkhosi, kungakanani okuhle ngempela? Ilingana nokuhle kweqiniso okuhlukaniswe yizo zonke izinto ezibikezelwe, okujezisa ama-alamu angamanga. Khumbula (ukuzwela) uyabuza: kuzo zonke izinto ezinhle zangempela ezikhona, zingaki esizibambe? Ilingana namaphozithivu eqiniso ahlukaniswe yiwo wonke amaphuzu angempela, ukugeja okujezisayo. Lokhu kuvame ukuhwebelana: ukwehlisa umkhawulo wesinqumo kubamba okuhle kakhulu (ukukhumbula okuphezulu) kodwa kuhlaba umkhosi kakhulu (ukunemba okuphansi), futhi okuphambene nalokho. Okufanele ubeke phambili kuncike ezindlekweni - isihlungi sogaxekile sithanda ukunemba (ungalahli kudoti imeyili yangempela), kuyilapho isikrini somdlavuza sithanda ukukhumbula (ungaphuthelwa isimila). Isikolo se-F1, incazelo yabo ye-harmonic, ibhalansi kokubili enombolweni eyodwa.
I-Technical Insight
Womabili amamethrikhi avela kokuphozithiyo kweqiniso kwe-matrix okudidekayo, okuphozithizelayo okungamanga (FP), namanethikhi angamanga (FN): Precision = TP / (TP + FP), Khumbula = TP / (TP + FN). Ngokuphawulekayo, akekho noyedwa osebenzisa ama-negative wangempela, yingakho ehlala enolwazi lapho ama-negative edlula kakhulu ama-positive. Ukushanela umkhawulo wokuhlukanisa ulandelela ijika lokukhumbula ngokunemba; indawo engaphansi kwayo (ukunemba okumaphakathi) ifingqa ukusebenza futhi ikhethwa kune-ROC-AUC kudatha engalingani kakhulu.
I-Strategic Impact
Izinqumo ezicacile
Kukusiza ukuthi uhlukanise izimangalo ezicacile zobuchwepheshe kusukela olimini lokumaketha.
Izindleko kanye nesabelomali
Ungabuza imibuzo yokusebenzisa kangcono ngaphambi kokusebenzisa imali noma isikhathi.
Ithimba kanye nokusebenza komsebenzi
Amaqembu anokuqonda okwabiwe enza izinqumo ezingcono zomkhiqizo, inqubomgomo, nokufunda.
Ikusasa Lokunemba Nokukhumbula
Njengoba i-AI ingena ezizindeni ezinenani eliphakeme - ukuxilongwa kwezokwelapha, ukulinganiswa kokuqukethwe, ukukhwabanisa - amaqembu aya ngokuya abika ukunemba nokukhumbula (kanye namajika awo) esikhundleni sokunemba kwawodwa, futhi ashunise imingcele ukuze afane nezindleko zomhlaba wangempela kanye nemingcele yokulunga. Ukuhlola okunembayo/okukhumbulayo kweqembu ngalinye kuba indinganiso yokuthola izilinganiso zamaphutha ezihlukene kuzo zonke izinhlobo zabantu. Lindela amamethrikhi acebile azwela izindleko, amathuba alinganiselwe, kanye namathuluzi okuvumela ababambiqhaza bakhethe amaphuzu okusebenza ngokuhlanganyela kunokwamukela umkhawulo ozenzakalelayo ongu-0.5.
Ukuqaliswa Komhlaba Wangempela
Izihlungi zogaxekile ziculela ukunemba okuphezulu ngakho-ke ama-imeyili asemthethweni cishe awalokothi athunyelwe ngephutha kufolda yogaxekile.
Ukuhlolwa kokuhlolwa kwezokwelapha kubeka phambili ukukhumbula okukhulu ukuze kugwenywe iziguli ezilahlekile empeleni ezinalesi sifo, zamukele izimpawu ezingamanga ezengeziwe ukuze zilandelelwe.
Amasistimu okusesha nezincomo abika precision@k (mingaki imiphumela engu-k ephezulu efanelekile) ukukala ikhwalithi yezinga.
Ukutholwa kokukhwabanisa kulinganisa ukunemba nokukhumbula ngesikolo se-F1, njengoba womabili ama-alamu angamanga nokukhwabanisa okugejiwe kuyabiza.
Izingozi & Guardrails
Amaqembu ahlukene angasebenzisa igama elifanayo ngokuhlukile, ngakho chaza ububanzi kusenesikhathi.
Amabhentshimakhi angabukeka eqinile kuyilapho ukusebenza komhlaba wangempela kungalingani.
Ukuziba ikhwalithi yedatha nezinhlelo zokuhlaziya kuvame ukudala imiphumela entekenteke.
Ukuqalisa Umhlahlandlela
Qala ngencazelo yolimi olulula yomphumela oyidingayo.
Khetha imethrikhi eyodwa yempumelelo nesimo esisodwa sokuhluleka ngaphambi kokuhlolwa.
Qalisa umshayeli omncane onedatha emele, hhayi isethi yedemo ephucuziwe.
Idokhumenti lapho Ukunemba Nokukhumbula kusiza nalapho izindlela ezilula zingcono khona.
Qhubeka Uhlole
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Umhlahlandlela olandelayo
I-Tempus AI ku-Precision Medicine
Imibuzo evame ukubuzwa
What is Precision and Recall?
Ukunemba nokukhumbula amamethrikhi amabili ahambisanayo okuhlola abahlukanisi bezigaba, ikakhulukazi uma amakilasi engalingani. Ndawonye baveza lokho ukunemba okusobala okufihlayo - ukuthi izibikezelo ezinhle zemodeli zilungile kaningi kangakanani, nokuthi zingaki izinto ezinhle zangempela ezibambayo.
What is next for Precision and Recall?
Njengoba i-AI ingena ezizindeni ezinenani eliphakeme - ukuxilongwa kwezokwelapha, ukulinganiswa kokuqukethwe, ukukhwabanisa - amaqembu aya ngokuya abika ukunemba nokukhumbula (kanye namajika awo) esikhundleni sokunemba kwawodwa, futhi ashunise imingcele ukuze afane nezindleko zomhlaba wangempela kanye nemingcele yokulunga. Ukuhlola okunembayo/okukhumbulayo kweqembu ngalinye kuba indinganiso yokuthola izilinganiso zamaphutha ezihlukene kuzo zonke izinhlobo zabantu. Lindela amamethrikhi acebile azwela izindleko, amathuba alinganiselwe, kanye namathuluzi okuvumela ababambiqhaza bakhethe amaphuzu okusebenza ngokuhlanganyela kunokwamukela umkhawulo ozenzakalelayo ongu-0.5.
Ukunemba kuphendula muphi umbuzo?
Precision = TP / (TP + FP) ikala ukunemba kwezibikezelo ezinhle zemodeli - ukuthi ifulegi elihle lithembeke kangakanani.
Kungani ukunemba nokukhumbula kukhethwa kunokunemba okusobala kumadathasethi angalingani kakhulu?
Ngoba awekho amamethrikhi asebenzisa ama-negetive wangempela, awakhuliswa yisigaba esikhulu esinegethivu, okulula ukusibikezela ngendlela okunemba ngayo.