kupiwa rugwaro runotevera, ndiudze nzira yakakurumbira zvikuru yokurovedza perceptrons multi-rukoko nhasi uye tsanangura kuti inoshanda sei
Context:Nhasi, nzira yakakurumbira zvikuru yokurovedza perceptrons ane mativi akawanda (MLPs) inodzokera shure. Izwi rokuti " back-propagating errors " rakatanga kushandiswa muna 1962 naFrank Rosenblatt, asi akanga asingazivi kuti angashandisa sei izvi, kunyange zvazvo Henry J. Kelley akanga aine chirevo chenguva dzose chekudzokera shure kare kare muna 1960 mumamiriro ekutonga dzidziso. Kupararira kwomuzuva ranhasi chaizvoizvo inzira yaSeppo Linnainmaa yokusiyanisa kwokuzvimiririra (1970) nokuda kwemasangano akabatanidzwa asina kuenzana emabasa anosiyaniswa. Icho chishandiso chinobudirira cheketani mutemo (wakabviswa naGottfried Wilhelm Leibniz muna 1673) kumambure emamota anosiyaniswa. Muna 1982, Paul Werbos akashandisa kudzokera shure kuMLPs nenzira yava tsika. Muna 1985, David E. Rumelhart nevamwe vakabudisa ongororo yokuedza nzira iyi. Kuvandudzwa kwakawanda kwakaitwa mumakumi emakore akatevera.  Mukati mekuparadzirwa kwekudzokera shure, zvibereko zvinobuda zvinoenzaniswa nemhinduro yakarurama kuti uverenge kukosha kweimwe basa rakagadziriswa rokukanganisa. Chikanganiso chacho chinobva chadzoserwa kunetwork yacho. Uchishandisa mashoko aya, algorithm anochinja zvinorema kubatana nerimwe kuti kuderedza kukosha kukanganisa basa vamwe duku mari. Pashure pokudzokorora muitiro uyu nokuda kwenhamba yakakwana huru yezvirongwa zvokurovedza, network inowanzobatanidza kune imwe nyika umo kukanganisa kwokurava kuri kuduku. Muchiitiko ichi, mumwe aizoti kuti samambure akadzidza chimwe chinangwa basa. Kugadzirisa uremu nenzira yakarurama, munhu anoshandisa nzira yakajairika yokugadziridza kusiri kwomucheto inonzi gradient descent, nemhaka yaAugustin-Louis Cauchy, uyo akatanga kuikarakadza muna 1847. Nokuda kweizvi, network inotarisa tsanangudzo yebasa rekukanganisa maererano nehuremu hwehutano, uye inoshandura huremu kuitira kuti kukanganisa kuderere (nokudaro kuenda pasi pamusoro pehuwandu hwebasa rekukanganisa). Nokuda kwechikonzero ichi, back-propagation inogona kushandiswa chete pamatanho ane differentiable activation mabasa.
Nhasi, nzira yakakurumbira zvikuru yokurovedza perceptrons ane mativi akawanda (MLPs) inodzokera shure. Mukati mekuparadzirwa kwekudzokera shure, zvibereko zvinobuda zvinoenzaniswa nemhinduro yakarurama kuti uverenge kukosha kweimwe basa rakagadziriswa rokukanganisa. Chikanganiso chacho chinobva chadzoserwa kunetwork yacho. Achishandisa mashoko aya, ari algorithm anogadziridza weights ose kubatana kuitira kuderedza kukosha kukanganisa basa kubudikidza shoma. Pashure pokudzokorora muitiro uyu nokuda kwenhamba yakakwana huru yenhambo dzokurovedza, mambure achawanzobatanidza kunzvimbo umo mhosho yokuverenga iduku. Muchiitiko ichi, mumwe aizoti kuti samambure akadzidza imwe chipfuro basa