Muaj xya cov kauj ruam tseem ceeb hauv kev ua cov ntaub ntawv ua ntej hauv Machine Learning:
- Tau txais cov ntaub ntawv. …
- Ntawm tag nrho cov tsev qiv ntawv tseem ceeb. …
- Ntshuam cov ntaub ntawv. …
- Kev txheeb xyuas thiab tuav cov txiaj ntsig uas ploj lawm. …
- Encoding cov ntaub ntawv categorical. …
- Splitting cov dataset. …
- Kev ntsuas qhov ntsuas.
Yuav ua li cas yog cov kauj ruam hauv cov ntaub ntawv ua ntej?
Txhawm rau kom cov ntaub ntawv zoo, nws yog qhov tseem ceeb rau ua ntej nws. Txhawm rau ua kom cov txheej txheem yooj yim dua, cov ntaub ntawv ua ntej tau muab faib ua plaub theem: cov ntaub ntawv tu, kev sib koom ua ke ntawm cov ntaub ntawv, txo cov ntaub ntawv, thiab cov ntaub ntawv hloov pauv.
Dab tsi yog cov ntaub ntawv ua ntej raws li siv hauv kev kawm tshuab?
Nyob rau hauv ib qho txheej txheem Machine Learning, Cov Ntaub Ntawv Ua Ntej yog kauj ruam uas cov ntaub ntawv tau hloov pauv, lossis Encoded, coj nws mus rau lub xeev uas tam sim no lub tshuab tau yooj yim parse nws Hauv lwm lo lus, cov yam ntxwv ntawm cov ntaub ntawv tam sim no tuaj yeem txhais tau yooj yim los ntawm algorithm.
Vim li cas peb thiaj li yuav tsum tau ua cov ntaub ntawv ua ntej hauv kev kawm tshuab?
Data preprocessing yog ib kauj ruam tseem ceeb hauv Machine Learning raws li cov ntaub ntawv zoo thiab cov ntaub ntawv muaj txiaj ntsig uas tuaj yeem muab tau los ntawm nws ncaj qha cuam tshuam rau lub peev xwm ntawm peb tus qauv kawm; Yog li ntawd, nws yog ib qho tseem ceeb heev uas peb ua ntej peb cov ntaub ntawv ua ntej pub rau hauv peb cov qauv.
Koj ua li cas ua cov duab rau kev kawm tshuab?
Algorithm:
- Nyeem cov duab cov ntaub ntawv (khaws cia hauv cov ntaub ntawv folder).
- Decode cov ntsiab lus JPEG rau RGB kab ntawm pixels nrog cov channels.
- Hloov cov no mus rau hauv ntab-taw tes tensors rau kev nkag mus rau neural nets.
- Rescale qhov pixel qhov tseem ceeb (nruab nrab ntawm 0 thiab 255) mus rau [0, 1] lub sijhawm (raws li kev cob qhia neural tes hauj lwm nrog cov kab no tau txais txiaj ntsig).
