Basics GUIDE

Logistic Regression

Logistic regression inofanotaura mukana wekuti chimwe chinhu ndechekirasi, senge spam kana kuti kwete spam, nekudzvanya mari inorema kuburikidza neS-yakaita curve.

Teerera kugwaro iriAI-yakarondedzerwa · ~2 min

Tanga kuverengaTora mubvunzo
Pa peji ino2 min verenga
  1. Pfupiso
  2. Kudzika Kwakadzika
  3. Kuitwa muNyika yeChokwadi
  4. Ramangwana reLogistic Regression
  5. Kuzvishandisa
  6. Ramba Uchiongorora
  7. Mibvunzo inowanzo bvunzwa

Pfupiso

Izvo zvine basa seyokutanga, inodudzirwa zvakanyanya algorithm yekuisa muchikamu.

Kudzika Kwakadzika

Pasinei nezita rayo, logistic regression inzira yekuisa, kwete regression. Inoverenga huwandu huremu hwezvinhu zvinopinza, zvino inopfuudza kukosha ikoko kuburikidza ne sigmoid (logistic) basa, iyo inoronga nhamba ipi zvayo kune zvingangoitika pakati pe 0 ne 1. Kana mukana wacho ukadarika chikumbaridzo, kazhinji 0.5, pfungwa yacho yakanyorwa kuti yakanaka. Iyo modhi inodzidza huremu hwayo nekudzikisira kurasikirwa kwelogi (muchinjika-entropy), iyo inorangidza zvakanyanya fungidziro dzisiridzo. Simba rakakura kududzira: huremu hwega hwega hunokuudza kuti chimiro chinoshandura sei maodhi emhedzisiro, saka iwe unogona kuona kuti ndezvipi zvinhu zvinosundira fungidziro kumusoro kana pasi. Multiclass shanduro dzinowedzera iyo uchishandisa iyo softmax basa.

Kuitwa muNyika yeChokwadi

Imeyili spam kusefa: kufungidzira mukana wekuti meseji ndeye spam kubva mushoko uye anotumira maficha.

Chikwereti chibodzwa: kufanotaura mukana wemukweretesi achatadza, aine huremu hwezvipo.

Kufanotaura nezvenjodzi yekurapa: kufungidzira mukana wekuti murwere ane chirwere kubva mukuyedzwa kukosha uye zviratidzo.

Marketing churn modhi: kufanotaura kana mutengi achizokanzura kunyorera mwedzi unouya.

Ramangwana reLogistic Regression

Logistic regression inomira nekuti inokurumidza, pachena, uye hwaro hwakasimba hunoyerwa mhando dzemafancier. Munzvimbo dzakadzorwa dzakaita semari nemishonga, kududzira kwayo kunoita kuti irambe iri mukushandiswa kunoshanda uko mhando dzebhokisi dema dzakatarisana nekuongororwa. Iyo zvakare inogara mukati memazuva ano neural network: iyo yekupedzisira kupatsanura layer ine sigmoid kana softmax inonyatso kurongeka, saka kuinzwisisa isuwo rekudzidza kwakadzama.

Kuzvishandisa

Nei zvichikosha

  • Sarudzo dzakajeka. Inokubatsira kuparadzanisa zvakajeka zvichemo zvehunyanzvi kubva mumutauro wekushambadzira.
  • Mutengo uye bhajeti. Iwe unogona kubvunza zvirinani kuita mibvunzo usati washandisa mari kana nguva.
  • Team uye workflow. Zvikwata zvine nzwisiso yakagovaniswa inoita zvirinani chigadzirwa, mutemo, uye sarudzo dzekudzidza.

Chenjera

  • 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.

Matanho anotevera

  1. Tanga netsanangudzo yemutauro wakajeka yemhedzisiro yaunoda.
  2. Sarudza metric imwe yekubudirira uye imwe yekutadza mamiriro usati waedzwa.
  3. Mhanya mutyairi mudiki ane data remumiriri, kwete demo rakakwenenzverwa.
  4. Nyora uko Logistic Regression inobatsira uye uko nzira dzakareruka dziri nani.

Ramba Uchiongorora

Chii chinonzi AI?

Wana pfungwa dzakakosha usati wanyura zvakadzika.Verenga Guide

Iyo AI Inodzidza

Nzwisisa nzira yekudzidziswa kuseri kwehurongwa hwazvino.Verenga Guide

Tsamba yemahara

Tora iyo yemazuva ese AI pfupiso

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Imwe email zuva rega rega revhiki. Bvisa kunyoresa kamwe chete. Hatimbotengese kana kugovera kero yako.

Zviedze iwe pachako

Take the Logistic Regression quiz

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Tanga mibvunzo

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Mibvunzo inowanzo bvunzwa

Chii chinonzi Logistic Regression?

Logistic regression inofanotaura mukana wekuti chimwe chinhu ndechekirasi, senge spam kana kuti kwete spam, nekudzvanya mari inorema kuburikidza neS-yakaita curve. Izvo zvine basa seyokutanga, inodudzirwa zvakanyanya algorithm yekuisa muchikamu.

Pasinei nezita rayo, chii chinonzi logistic regression chinoshandiswa?

Logistic regression inoburitsa mukana uye inoshandiswa kuisa zvinhu muzvikamu zvakasiyana, senge spam maringe kwete spam.

Chii chinoita sigmoid (logistic) basa mumuenzaniso?

Iyo sigmoid inokwenya mutsara mutsetse muchikamu che 0-kusvika-1 kuitira kuti zvinobuda zvigone kuverengwa sezvingabvira.

Ndeipi kurasikirwa basa iro logistic regression inoderedza panguva yekudzidziswa?

Logistic regression inodzidziswa nekudzikisira cross-entropy, iyo inoranga zvakasimba fungidziro ine chivimbo asi isiri iyo.

Sei kudzoreredzwa kwemaitiro kuchikosheswa pakududzira?

Iwo akadzidzwa coefficients ane chirevo chakajeka: imwe neimwe inoratidza shanduko ye log-odd pachikamu chechimiro chayo, chinowanzo ratidzwa seyero ye odds.

Ko logistic regression inoshandura sei mukana kuita kirasi label?

Kana mukana wakafanotaurwa ukapfuura chikumbaridzo (kazhinji 0.5), poindi yacho yakanyorwa kuti yakanaka; zvimwe zvakaipa.

Ramba uchidzidza

Mazano anoenderana

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