Gulu la ofufuza ochokera ku yunivesite ya Padua (Italy) ndi University of Delft (Netherlands) asindikiza njira yogwiritsira ntchito makina ophunzirira kuti apangenso nambala ya PIN yomwe inalowetsedwa kuchokera pa kujambula kanema wa malo olowetsamo manja a ATM. . Mukalowa nambala ya PIN ya 4, mwayi wolosera kachidindo koyenera umayesedwa pa 41%, poganizira kuthekera koyesa katatu musanatseke. Pa ma PIN a manambala 5, mwayi wolosera unali 30%. Kuyesera kosiyana kunachitika momwe odzipereka a 78 adayesa kulosera PIN code kuchokera kumavidiyo ojambulidwa ofanana. Pankhaniyi, mwayi wolosera bwino unali 7.92% pambuyo poyesera katatu.
Mukaphimba gulu la digito la ATM ndi chikhato chanu, gawo la dzanja lomwe cholowetsamo limapangidwira limakhalabe lowululidwa, zomwe ndi zokwanira kulosera kudina posintha malo a dzanja ndikusuntha zala zosaphimbidwa kwathunthu. Mukasanthula kulowetsedwa kwa manambala aliwonse, makinawo amachotsa makiyi omwe sangathe kukanikizidwa poganizira momwe dzanja lakuphimba lilili, ndikuwerengeranso zosankha zomwe zingatheke kukakamiza kutengera momwe dzanja lakukanikiza lilili ndi malo omwe makiyiwo ali. . Kuti muwonjezere mwayi wozindikira zolowetsa, phokoso la makiyi amatha kulembedwanso, lomwe ndi losiyana pang'ono pa kiyi iliyonse.
Kuyeseraku kunagwiritsa ntchito makina ophunzirira makina potengera kugwiritsa ntchito network ya convolutional neural network (CNN) ndi neural network yokhazikika yotengera kapangidwe ka LSTM (Memory Short Term Memory). Netiweki ya CNN inali ndi udindo wochotsa deta yapakatikati pa chimango chilichonse, ndipo netiweki ya LSTM idagwiritsa ntchito izi kuti ipeze njira zosinthira nthawi. Chitsanzocho chinaphunzitsidwa pa mavidiyo a anthu 58 osiyanasiyana omwe akulowetsa ma PIN pogwiritsa ntchito njira zolembera zolembera zosankhidwa ndi ophunzira (aliyense adalemba ma code 100, mwachitsanzo, zitsanzo zolowetsa 5800 zinagwiritsidwa ntchito pophunzitsa). Pamaphunzirowa, zidawululidwa kuti ogwiritsa ntchito ambiri amagwiritsa ntchito imodzi mwa njira zitatu zazikuluzikulu zolumikizira zolowera.
Kuphunzitsa makina ophunzirira makina, seva yochokera pa purosesa ya Xeon E5-2670 yokhala ndi 128 GB ya RAM ndi makadi atatu a Tesla K20m okhala ndi 5GB ya kukumbukira iliyonse. Gawo la mapulogalamuwa limalembedwa mu Python pogwiritsa ntchito laibulale ya Keras ndi nsanja ya Tensorflow. Popeza mapanelo olowetsa a ATM ndi osiyana ndipo zotsatira zolosera zimatengera mawonekedwe monga makiyi ofunikira ndi topology, maphunziro apadera amafunikira pagulu lililonse.
Monga njira zodzitetezera ku njira yowukira yomwe mukufuna, tikulimbikitsidwa, ngati kuli kotheka, kugwiritsa ntchito ma PIN a manambala 5 m'malo mwa 4, ndikuyesanso kubisa malo ochulukirapo momwe mungathere ndi dzanja lanu (njirayo imakhalabe yothandiza ngati pafupifupi 75% ya malo olowetsamo aphimbidwa ndi dzanja lanu). Opanga ma ATM akulimbikitsidwa kugwiritsa ntchito zowonetsera zapadera zoteteza zomwe zimabisa zolowera, komanso osati zamakina, koma mapanelo olowetsamo okhudza, malo a manambala omwe amasintha mwachisawawa.
Source: opennet.ru