Cov txheej txheem:
Video: Yuav ua li cas koj xam RFM?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Yuav nrhiav tau kwv tij mis loj (M r) ntawm ib tug compound, koj ntxiv ua ke cov txheeb ze atomic loj qhov tseem ceeb (A r tus nqi) rau tag nrho cov atoms hauv nws cov qauv. Nrhiav tus M r ntawm carbon monoxide, CO. Nrhiav M r sodium oxide, Na 2O. Cov kwv tij mis loj ntawm ib yam khoom, qhia hauv grams, yog hu ua ib mole ntawm cov khoom ntawd.
Kuj paub, koj ua li cas RFM tsom xam?
Ua RFM Segmentation thiab RFM Analysis, Ib kauj ruam los ntawm kauj ruam
- Thawj kauj ruam hauv kev tsim tus qauv RFM yog txhawm rau muab Recency, Frequency thiab Monetary values rau txhua tus neeg siv khoom.
- Cov kauj ruam thib ob yog faib cov npe ntawm cov neeg siv khoom rau hauv pawg rau txhua qhov ntawm peb qhov ntev (R, F thiab M), siv Excel lossis lwm yam cuab yeej.
Tsis tas li ntawd, kev txheeb xyuas li cas? Piv txwv li, kev lag luam kev pabcuam tuaj yeem siv cov kev suav no:
- Recency = qhov siab tshaj plaws ntawm "10 - tus naj npawb ntawm lub hlis dhau los txij li tus neeg yuav khoom kawg" thiab 1.
- Zaus = qhov siab tshaj plaws ntawm "tus naj npawb ntawm kev yuav khoom los ntawm cov neeg siv khoom hauv 12 lub hlis dhau los (nrog qhov txwv ntawm 10)" thiab 1.
Raws li txoj cai, tus qhab nia RFM yog dab tsi?
RFM (recency, frequency, monetary) tsom xam yog ib qho kev lag luam uas siv los txiav txim seb cov neeg siv khoom twg yog qhov zoo tshaj plaws los ntawm kev tshuaj xyuas seb tus neeg siv khoom tam sim no tau yuav li cas (recency), pes tsawg zaus lawv yuav (frequency), thiab ntau npaum li cas cov neeg siv khoom siv (nyiaj txiag).).
RFM siv rau dab tsi?
RFM yog ib txoj kev siv rau txheeb xyuas tus nqi ntawm cov neeg siv khoom. Nws yog feem ntau siv hauv database kev lag luam thiab kev lag luam ncaj qha thiab tau txais kev saib xyuas tshwj xeeb hauv khw muag khoom thiab kev pabcuam kev lag luam. RFM stands rau peb qhov ntev: Recency – Yuav ua li cas tsis ntev los no cov neeg muas zaub?
Pom zoo:
Yuav ua li cas koj xam lub sijhawm pabcuam hauv Simulation?
Lub sijhawm pabcuam (min) = tag nrho lub sijhawm pabcuam (min) tag nrho cov neeg siv khoom = 317 100 = 3.17 min Avg.inter-arrival time (min) = sum of inter-arrival times(min) number of arrivals − 1 = 415 99 = 4.19 N.B.E[inter-arrival time] = 1+8 2 = 3.2min
Yuav ua li cas koj xam variance nyob rau hauv ib tug pivot rooj?
Tsim ib Pivot Table Lub Hlis-dhau-hli Variance Saib rau Koj Daim Ntawv Qhia Excel Txoj cai-nias txhua tus nqi hauv lub hom phiaj teb. Xaiv Tus Nqi Thaj Chaw. Nyem qhov Show Values As tab. Xaiv % Qhov Sib txawv Los ntawm daim ntawv teev npe poob
Yuav ua li cas koj xam cov laj kab qis?
Cov laj kab feem ntau pom muaj cov qauv hauv qab no: Cov laj kab sab sauv = Q3 + (1.5 * IQR) Cov laj kab qis = Q1 - (1.5 * IQR)
Koj xam koj li RSA li cas?
Ib qho piv txwv yooj yim heev ntawm RSA encryption Xaiv primes p=11, q=3. n = pq = 11.3 = 33. phi = (p-1)(q-1) = 10.2 = 20. Xaiv e=3. Kos gcd(e, p-1) = gcd(3, 10) = 1 (ie 3 thiab 10 tsis muaj yam xwm txheej tshwj tsis yog 1), suav d xws li ed ≡ 1 (mod phi) piv txwv li suav d = (1/e ) mod phi = (1/3) mod 20. Public key = (n, e) = (33, 3)
Tus nqi huab xam xam li cas?
Thaum teeb tsa tus nqi, cov chaw muab huab txiav txim siab cov nuj nqis los tswj lub network. Lawv pib los ntawm kev suav cov nqi rau cov khoom siv hauv lub network, kev tu vaj tse hauv network, thiab kev ua haujlwm. Cov nuj nqis no tau ntxiv ua ke thiab tom qab ntawd muab faib los ntawm tus lej ntawm cov khib nyiab ib lub lag luam yuav xav tau rau nws IaaS huab