Mashoko dzidziso

Basic Dzidziso dzidziso kwakamboitwa forties ari maviri remakore, Shannon. mashoko dzidziso - sayenzi muitiro tama, kuchengeta uye wokuwanazve mashoko dzinongoitika, hwokugadzira uye magariro evanhu. Mafomu akawanda minda yesayenzi akadai kombiyuta sainzi, zvemutauro, cryptography, kudzora pfungwa, mufananidzo kubudiswa, genetics, zvepfungwa, dzezvoupfumi, sangano okuwana nzira dzinoshandiswa sayenzi iyi.

In ezvinhu ano mashoko dzidziso chaizvo zvakasimba chokuita kuti Coding pfungwa, inotaura vakawanda matambudziko zvinodiwa pakati chiratidzo uye shoko, uye dzidziso chiratidzo kubudiswa, sezvamakaropafadzwa quantization kudzidzwa uye kupora anonongedzera uye spectral uye kuwirirana ongororo yayo.

ruzivo pfungwa anoona inokosha yokuti "mashoko" nokuda kworutivi quantitatively, pasina kufungisisa kukosha kwayo, uye dzimwe nguva maturo. In nzira iyi, imwe peji chemashoko ichange iine anenge zvakafanana nemashoko pakutsvaga vanoverengeka nezviratidzo, uye hakubvi pakuti, chaizvoizvo, pane inodhindwa, kunyange kana zvakakwana mapenzi uye ita mhirizhonga iine mamwe zviratidzo.

Izvi dzinoruramiswa, asi chete kuti simulation kukurukurirana enyika, sezvo vachifanira zvakarurama nekufambisa mashoko pamusoro kudyidzana migero, izvo zvinogona chero yakatarwa pazvinhu uye zviratidzo. Zvadaro, kana zvakakodzera kufunga kukosha uye zvinoreva data, quantitative Inzira isingagamuchiriki. ezvinhu aya kumanikidza nouchapupu rairambidzwa kusango zvichiita chaikwo dzidziso iyi.

Kunyatsogona mashoko dzidziso kunosanganisira kufunga siyana nyaya, kusanganisira akarondedzera nokupfuuridzirwa uye negashiro mashoko zvakananga. Huru kukurukura zano, riri munyaya dzidziso iri sezvinotevera. Information Dzidziso uye Coding Iye anoona kuti izvi kunobva mashoko, riri shoko kana akaisa mashoko akanyorwa zvimwe earufabheti. Panobva shoko zvinogona wenyaya chero dzinongoitika kana chakagadzirwa mutauro, mutauro wevanhu, Database uye vamwe kwemasvomhu yokutevedzera, ndinosika kutevedzana mabhii. The wokutepfenyurisa anomuchinja shoko kuva chiratidzo chaienzanirana omuzvarirwo of kukurukurirana mugero - unosvikirwa kuti chiratidzo hutachiwana. Panguva choRugwaro vakadaro zviri pasi kukanganiswa, izvo kusuma nokumonyaniswa iri kukosha mashoko parameters. The mugamuchiri anonaya yepakutanga mashoko kubva akagamuchira kunaka chiratidzo. Message ari akaderedza chimiro anosvika kunzvimbo - mumwe munhu kana waishandiswa mudziyo.

shoko bhuku iri Statistical zvakasikwa, i.e. pakuonekwa nerimwe shoko vagara vandifungira imwe mukana. Shannon kwakaita mashoko dzidziso anotenda kuti kana mukana kweshoko akaenzana kubatana, kureva, chitarisiko chake yekudyidzana uye nechokwadi vasingatendi kuti hazvina atakure ruzivo.

Mumwe matambudziko zvinokosha mashoko yokuti anoona Kufambisa mashoko kukurukurirana chiteshi uye ruzivo zvivako shoko kunobva. Bandwidth iri pakutsvaga chairema 1 ikakuruma pa wechipiri.

Rimwe dambudziko rine kukurukura hurongwa vari kukanganiswa kuti vaida chiratidzo nzira. Shannon, zvinosuruvarisa haritipi Nzira dzinoshandiswa kuti nevaya. Nyore Kubviswa nzira kuti inodzokororwa kakawanda mashoko havasi chaizvo nokuti zvinotora nguva mari nokuda kwemashoko mashoko. Kukuru kunyatsoshanda rinobvumira kushandiswa Codes inokubvumirai zvikavengwa kwakarurama nokukanganisa mashoko hutachiwana.