Kusanthula kwamagulu mu sayansi ya ziwerengero kukuwonetsa gulu la anthu, amtundu wa anthu, omwe amadziwika kuti adakumana ndi zomwezi m'mbuyomu.defitsiku.
Chitsanzo cha gulu lachibale ndi iwo omwe adabadwa m'chaka chopatsa.
M'maphunziro owerengera pali chizolowezi chowunikira, kwa ma cohorts predefinite, magawo omwe amayesa zochitika zachikhalidwe ndi zachuma.
Poyambirira inali gulu (lamanambala komanso lanzeru) la asirikali aku Roma. Pambuyo pake idagwiritsidwanso ntchito m'gulu lankhondo la Napoleon komanso gulu lankhondo la fascist. Koma zowonadi, buku lodziwika bwino ndi lomwe limapezekanso mu nyimbo ya ku Italiya ... "Tikhala pafupi ndi Cohort, tili okonzeka kufa, Italy yotchedwa"
Koma kubwerera ku ziwerengero, gulu ndi gulu la anthu osankhidwa pakati pa anthu, pamakhalidwe omwe amakhala nawo munthawi yapadera.
Cohort motero akhonza kukhala anthu obadwa mchaka, kapena m'malo ena; itha kukhala gulu la anthu ogwirizana chifukwa chokhala ndi zomwe akumana nazo. Mwachitsanzo, atachoka ku Milan Central m'mwezi wa Ogasiti 2018.
Momwe mungayerekezere zidziwitso za kufa kwa khansa ya m'mapapo, mwa anthu omwe ali ndi vutoli, poyerekeza ndi kuchuluka komwe sikunachitike.
Iyi ndi njira yofunika kwambiri yowunikira, yomwe mwachionekere imatha kubweretsa zotsatira zosangalatsa ngakhale pakutsatsa kwa digito.
Kutsegulira mndandanda wazinthuzo pagulu la anthu mupeza kusankha kwa Cohort Analysis, komwe kumakhalabe beta.
Kupitilira pakuwunikira uku, mudzatha kumvetsetsa chikhalidwe cha magulu osawerengeka a alendo ndikuyerekeza ndi chiwerengero chonse cha alendo.
Pofika pazenera la Cohort Analysis, muwona mndandanda womwe ungakuthandizeni kusankha gulu lomwe mukufuna kulimbitsa kusanthula.
Zinthu zomwe zikukhudzidwa:
Tiyenera kudziwa kuti kusanthula kwa gulu kumapangitsa wogwiritsa ntchito magawo momwe amagwiritsidwira ntchito mwa njira kapena mwa ogwiritsira ntchito (zochitika, mtundu wa magalimoto, ndi zina zambiri).
Chithunzi chomwe chili pansipa ndi chogwirizana ndi kukhulupirika kwa ogwiritsa ntchito mlungu uliwonse kwa milungu isanu ndi inayi.
Mzere woyamba wa graph umayimira ma cohorts ndi kuchuluka kwa ogwiritsa ntchito pagulu lililonse.
M'malo mwathu, ogwiritsa ntchito omwe amapezeka nthawi iliyonse patsamba lawebusayiti lomwe tikuwona izi.
Masamba otsatirawa akuwonetsa kuchuluka kwa zomwe mumasankha mukakhazikitsa kukula kwa gulu lanu. Mwachitsanzo, ngati mwawonetsa kuwonjezera pa sabata, mudzaona zambiri za sabata loyamba, lachiwiri, komanso lachitatu.
Maselo m'malo mwake amawona zomwe zikusanthula (zosankhidwa ndi zitsulo) pagulu lililonse munthawi yomwe mudafotokoza.
M'chitsanzo chomwe tikuwona kuti pa avareji pamakhala kuchuluka kwa ogwiritsa ntchito onse a 4% sabata yoyamba (yotsatira sabata ya 0, yomwe imazindikiritsa magulu omenyera), ya 1,63% sabata yachiwiri ndi zina.
M'chipinda chilichonse, mutha kupeza phindu lofanana ndi la gulu lokhazikika lokha: kuchokera kufananizidwa ndi foni iliyonse poyerekeza ndi ena omwe amakhala munthawi yomweyo komanso kuchuluka kwa anthu kuthekera kuti athe kupeza zisonyezo zofunikira kwambiri pokhudzana ndi Khalidwe la ogwiritsa ntchito omwe amayendera tsamba lathu.
Ndi kusanthula kwa gulu ndikotheka kumvetsetsa bwino zomwe gulu la ogwiritsa ntchito patsamba lake likugwirizana ndi kuchuluka kwathunthu (omwe machitidwe ake akuwonekera mzere woyamba wa graph).
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