Video: Dab tsi yog chromosomes hauv genetic algorithm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv noob caj noob ces algorithms , a chromosome (tseem qee zaum hu ua genotype) yog cov txheej txheem uas txhais tau hais tias cov kev daws teeb meem uas tau hais tseg. genetic algorithm yog sim daws. Cov txheej txheem ntawm txhua qhov kev daws teeb meem yog hu ua cov pej xeem.
Yog li ntawd, dab tsi yog txhais los ntawm caj ces algorithm?
A genetic algorithm yog ib txoj kev tshawb nrhiav heuristic siv hauv kev txawj ntse thiab kev suav. Nws yog siv los nrhiav cov kev daws teeb meem zoo rau kev tshawb nrhiav cov teeb meem raws li kev xav ntawm ntuj xaiv thiab evolutionary biology. Genetic algorithms yog qhov zoo heev rau kev tshawb nrhiav los ntawm cov ntaub ntawv loj thiab nyuaj.
Kuj Paub, genetic algorithm ua haujlwm li cas? A genetic algorithm yog kev tshawb nrhiav heuristic uas tau tshoov siab los ntawm Charles Darwin txoj kev xav ntawm ntuj evolution. Qhov no algorithm qhia txog cov txheej txheem ntawm kev xaiv ntuj tsim qhov twg cov tib neeg zoo tshaj plaws raug xaiv rau kev yug me nyuam txhawm rau tsim cov xeeb ntxwv ntawm lwm tiam neeg.
Ib yam li ntawd ib tug yuav nug, dab tsi yog tus tswv ntawm genetic algorithm?
Tus neeg teb xov tooj genetic yog tus neeg teb xov tooj siv hauv genetic algorithms los coj cov algorithm mus rau kev daws teeb meem. Muaj peb hom kev ua haujlwm tseem ceeb ( kev hloov pauv , crossover thiab xaiv ), uas yuav tsum ua hauj lwm ua ke nrog rau ib leeg kom lub algorithm ua tiav.
Qhov twg genetic algorithm siv?
Optimization - Genetic Algorithms feem ntau yog siv nyob rau hauv optimization teeb meem nyob qhov twg peb yuav tsum maximize los yog txo ib tug muab lub hom phiaj muaj nuj nqis muaj nuj nqi nyob rau hauv ib tug muab kev txwv. Txoj hauv kev los daws cov teeb meem Optimization tau raug qhia thoob plaws hauv kev qhia.
Pom zoo:
Dab tsi yog pom hauv eukaryotic chromosomes?
Hauv prokaryotes, lub voj chromosome muaj nyob hauv cytoplasm hauv thaj chaw hu ua nucleoid. Nyob rau hauv sib piv, nyob rau hauv eukaryotes, tag nrho cov cell chromosomes yog khaws cia nyob rau hauv ib tug qauv hu ua lub nucleus. Txhua eukaryotic chromosome yog tsim los ntawm DNA coiled thiab condensed nyob ib ncig ntawm nuclear proteins hu ua histones
Dab tsi yog qhov txawv ntawm chromosomes chromatids thiab homologous chromosomes?
Nws yog ib qho tseem ceeb kom nco ntsoov qhov sib txawv ntawm tus muam chromatids thiab homologous chromosomes. Sister chromatids yog siv nyob rau hauv cell division, zoo li nyob rau hauv lub cell hloov, whereas homologous chromosomes yog siv nyob rau hauv reproductive faib, zoo li ua ib tug neeg tshiab. Sister chromatids yog genetic tib yam
Dab tsi ntawm chromosomes ua cov spindle fibers txuas rau txhawm rau txav cov chromosomes ncig?
Nws thiaj li, cov microtubules txuas los ntawm centrioles ntawm cov ncej ntawm lub xov tooj ntawm tes txuas mus rau txhua lub centromere thiab txhim kho mus rau hauv spindle fibers. Los ntawm kev loj hlob ntawm ib kawg thiab shrinking rau lwm yam, spindle fibers dlhos cov chromosomes raws nruab nrab ntawm lub cell nucleus, kwv yees li equidistant los ntawm spindle ncej
Dab tsi yog chromosomes hauv tib neeg lub cev?
Chromosomes yog cov qauv zoo li xov nyob rau hauv lub nucleus ntawm cov tsiaj thiab cov nroj tsuag. Txhua chromosome yog tsim los ntawm cov protein thiab ib qho molecule ntawm deoxyribonucleic acid (DNA). Dhau los ntawm niam txiv mus rau cov xeeb ntxwv, DNA muaj cov lus qhia tshwj xeeb uas ua rau txhua hom tsiaj muaj sia
Dab tsi yog cov yam ntxwv tseem ceeb ntawm genetic algorithm?
Muaj tsib yam tseem ceeb ntawm GA: Kev nkag mus rau cov kev daws teeb meem ntawm qhov teeb meem raug suav tias yog tib neeg hauv cov pej xeem. Yog tias cov kev daws teeb meem tuaj yeem muab faib ua cov kauj ruam me me (lub tsev thaiv), cov kauj ruam no yog sawv cev los ntawm cov noob thiab cov noob caj noob ces (ib chromosome) yuav nkag mus rau tag nrho cov tshuaj