ROC Curves uye AUC
ROC curve inoronga kuti mugadziri anopatsanura sei makirasi maviri padanho rega rega resarudzo, uye AUC inomanikidza iyo curve yese kuita nhamba imwe.
Overview
ROC curve inoronga kuti mugadziri anopatsanura sei makirasi maviri padanho rega rega resarudzo, uye AUC inomanikidza iyo curve yese kuita nhamba imwe. Pamwe chete vanokuudza mamiriro emhando yakazvimirira pane kwaunodhirowa cutoff.
ROC Curves uye AUC inogara mune yakakosha AI toolkit. Paunonzwisisa, mamwe maAI misoro inova nyore kuongorora uye kuenzanisa.
Deep Dive
A Receiver Operating Characteristic (ROC) curve inoronga True Positive Rate (sensitivity, on the y-axis) vachipesana neNhema Yakanaka Mwero (1 minus chaiyo, pa x-axis) paunenge uchitsvedza chikumbaridzo chechikamu kubva pa1 kusvika ku0. Chikumbaridzo chega chega chinopa poindi imwe; kudzibatanidza kunoronda curve. Modhi inoisa chese chakanaka pamusoro pese yakaipa inombundira kona yepamusoro-kuruboshwe. Iyo Area Under the Curve (AUC) inoyera iyo yakazara nzvimbo pasi pemutsara uyu, kubva pa0.5 (random guessing, the diagonal) kusvika 1.0 (yakakwana). Tsanangudzo inobatsira: AUC yakaenzana nemukana wekuti modhi yacho inowana yakasarudzika yakasarudzwa yakanaka kupfuura yakasarudzwa zvisina tsarukano. Izwi rinobva kuHondo Yenyika II radar vanoshanda vanosiyanisa chiratidzo kubva kune ruzha.
Technical Insight
AUC inozvimiririra pachikumbaridzo nekuti inobatanidza mashandiro pane ese cutoffs, saka haina kukanganiswa nekwaunoseta muganho wesarudzo. Yakaenzana nemasvomhu nenhamba yeMann-Whitney U uye Wilcoxon rank-sum bvunzo, zvichireva kuti zvinoenderana chete nedanho rekurongeka kwezvibodzwa zvakafanotaurwa, kwete maitiro avo akakwana. Izvi zvinoita kuti igadzikane pasi pe monotonic mamakisi eshanduko asi zvakare isinganetseke pakuenzanisa: yakanyatsorongeka asi isina kurongeka modhi inogona kuramba iine yakakwira AUC.
Kubata ROC Curves uye AUC
Kuvaka kunzwisisa kwakadzama, bata ROC Curves uye AUC semuenzaniso wekushandisa, kwete chinhu chimwe chete. Tsanangura zvaunoda, jekesa fungidziro, uye patsanura izvo zvingaitwe nehurongwa nekuvimbika kubva kune zvichiri kuda kutonga kwenyanzvi.
Mukuita, zvikwata zvakasimba zvinoshandisa ROC Curves neAUC zvinovaka mamodheru akasimba ekutanga, wozonyora iwo modhi kune zvipingaidzo chaizvo zvekugadzira. Ivo vanonyora zvakajeka maitiro ebudiriro, bvunzo vachipokana ne data rechokwadi uye mafambiro ebasa, uye iterate zvichibva pane zvakacherechedzwa maitiro ekutadza kwete kuhwina-nguva imwe chete yebhenji. Apa ndipo apo kunzwisisa kwe theoretical kunoshanduka kuve kugona kwakasimba pane chigadzirwa, mutemo, uye mashandiro.
Inokubatsira kuparadzanisa zvakajeka zvichemo zvehunyanzvi kubva mumutauro wekushambadzira. Panguva imwecheteyo, Zvikwata zvakasiyana zvinogona kushandisa izwi rimwechete zvakasiyana, saka tsanangura nzvimbo nekukasira. Nzira yakatsiga ndeyekubatanidza kukurumidza kuyedza nekutonga: mhanyisa vatyairi vendege, tora humbowo, buritsa matanda esarudzo, uye urambe uchivandudza chengetedzo semaitiro emuenzaniso, zvinotarisirwa nemushandisi, uye zvinodikanwa zvekutonga.
Strategic Impact
Inokubatsira kuparadzanisa zvakajeka zvichemo zvehunyanzvi kubva mumutauro wekushambadzira.
Inokubatsira kuparadzanisa zvakajeka zvichemo zvehunyanzvi kubva mumutauro wekushambadzira. Mukutumirwa kwemhando yepamusoro, izvi zvinoshandurirwa kuita mitemo inoyerwa yekushanda, miganhu yevaridzi, uye tsika dzekudzokorora dzinodzokororwa kuitira kuti zvikwata zvikwire kuvimba pane kukwidza kusajeka.
Iwe unogona kubvunza zvirinani kuita mibvunzo usati washandisa mari kana nguva.
Iwe unogona kubvunza zvirinani kuita mibvunzo usati washandisa mari kana nguva. Mukutumirwa kwemhando yepamusoro, izvi zvinoshandurirwa kuita mitemo inoyerwa yekushanda, miganhu yevaridzi, uye tsika dzekudzokorora dzinodzokororwa kuitira kuti zvikwata zvikwire kuvimba pane kukwidza kusajeka.
Zvikwata zvine nzwisiso yakagovaniswa inoita zvirinani chigadzirwa, mutemo, uye sarudzo dzekudzidza.
Zvikwata zvine nzwisiso yakagovaniswa inoita zvirinani chigadzirwa, mutemo, uye sarudzo dzekudzidza. Mukutumirwa kwemhando yepamusoro, izvi zvinoshandurirwa kuita mitemo inoyerwa yekushanda, miganhu yevaridzi, uye tsika dzekudzokorora dzinodzokororwa kuitira kuti zvikwata zvikwire kuvimba pane kukwidza kusajeka.
Real-World Implementation
Kuenzanisa maviri ehutsotsi-yekuona mamodhi ebhangi neAUC yavo kuti vatore iyo inonyanya kuenzanisa kutengeserana kwehutsotsi pamusoro peiyo iri pamutemo.
Kuongorora kuongororwa kwechirwere chechirwere (semuenzaniso, kenza yekuongorora classifier) uko radiologist inoda kutengeserana nekubata dzimwe nyaya dzichipokana nearamu enhema.
Kugadzirisa chikumbaridzo chesefa uchishandisa ROC curve kuchengetedza manyepo (tsamba dzepamutemo dzakashongedzerwa se spam) dzakaderera zvakanyanya.
Kuenzanisa kiredhiti-default scoring modhi apo AUC inopfupikisa kuti inoparadzanisa sei vanokwereta vanodzorera kubva kune avo vanotadza.
Maitiro Ekuita
ROC Curves uye AUC mukuita
Kuenzanisa maviri ehutsotsi-yekuona mamodhi ebhangi neAUC yavo kuti vatore iyo inonyanya kuenzanisa mafambisirwo ehutsotsi pamusoro peayo ari pamutemo.
Matimu anowanzo kuwana mhedzisiro iri nani kana achinge atsanangura emhando yepamusoro kumberi, chengetedza nzira yekukwira kwevanhu yemakesi emupendero, uye kuteedzera zvese zvakawanikwa zvechigadzirwa nemitengo yekukanganisa nekufamba kwenguva.
ROC Curves uye AUC mukuita
Kuongorora kuongororwa kwechirwere chechirwere (semuenzaniso, kenza yekuongorora classifier) apo radiologist inoda kutengeserana kuti ibate dzimwe nyaya dzichipikisa ma alarm enhema.
Matimu anowanzo kuwana mhedzisiro iri nani kana achinge atsanangura emhando yepamusoro kumberi, chengetedza nzira yekukwira kwevanhu yemakesi emupendero, uye kuteedzera zvese zvakawanikwa zvechigadzirwa nemitengo yekukanganisa nekufamba kwenguva.
ROC Curves uye AUC mukuita
Kugadzirisa chikumbaridzo chesefa uchishandisa ROC curve kuchengetedza manyepo (tsamba dzepamutemo dzakashongedzwa sespam) dzakaderera zvakanyanya.
Matimu anowanzo kuwana mhedzisiro iri nani kana achinge atsanangura emhando yepamusoro kumberi, chengetedza nzira yekukwira kwevanhu yemakesi emupendero, uye kuteedzera zvese zvakawanikwa zvechigadzirwa nemitengo yekukanganisa nekufamba kwenguva.
ROC Curves uye AUC mukuita
Benchmarking kiredhiti-default scoring modhi apo AUC inopfupikisa kuti inoparadzanisa sei vanokwereta vanodzorera kubva kune avo vanotadza.
Matimu anowanzo kuwana mhedzisiro iri nani kana achinge atsanangura emhando yepamusoro kumberi, chengetedza nzira yekukwira kwevanhu yemakesi emupendero, uye kuteedzera zvese zvakawanikwa zvechigadzirwa nemitengo yekukanganisa nekufamba kwenguva.
Njodzi & Guardrails
Zvikwata zvakasiyana zvinogona kushandisa izwi rimwechete zvakasiyana, saka tsanangura nzvimbo nekukurumidza.
Benchmarks inogona kutaridzika yakasimba nepo chaiyo-yenyika kuita isina kuenzana.
Kuregeredza mhando yedata uye zvirongwa zvekuongorora zvinowanzogadzira mhedzisiro isina kusimba.
Implementation Roadmap
Tanga netsanangudzo yemutauro wakajeka yemhedzisiro yaunoda.
Bata izvi segedhi rehumbowo: kana maitiro asina kusangana, imbomira kuburitsa, vhara gap, uye wobva wawedzera kushandiswa.
Sarudza metric imwe yekubudirira uye imwe yekutadza mamiriro usati waedzwa.
Bata izvi segedhi rehumbowo: kana maitiro asina kusangana, imbomira kuburitsa, vhara gap, uye wobva wawedzera kushandiswa.
Mhanya mutyairi mudiki ane data remumiriri, kwete demo rakakwenenzverwa.
Bata izvi segedhi rehumbowo: kana maitiro asina kusangana, imbomira kuburitsa, vhara gap, uye wobva wawedzera kushandiswa.
Nyora uko ROC Curves uye AUC inobatsira uye uko nzira dzakareruka dziri nani.
Bata izvi segedhi rehumbowo: kana maitiro asina kusangana, imbomira kuburitsa, vhara gap, uye wobva wawedzera kushandiswa.
Ramba Uchiongorora
Check your understanding
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