The hulda coefficient - halayyar hulda model

Hulda model (CM) - a lissafi shirin cewa samar da liyafar da wani ilmin lissafi lissafi, a cikin abin da m nuna alama quantified dangane da daya ko fiye Manuniya.

yx = ao + a1h1

inda: y - yi Manuniya, dangane da x factor.

x - alamar factor.

A1 - siga KM, da nuna nawa canji a cikin m nuna alama a lokacin da canza factor x ta daya, idan duk sauran abubuwan da zai shafi da y kasance canzawa.

AO CM siga wanda ya nuna sakamakon duk wasu dalilai a kan tasiri index of y, wasu fiye da factor m x

A lokacin da zabar tasiri Manuniya da factor model dole ne ya yi la'akari da cewa da yi Manuniya a cikin sarkar na causality tsaye a kan wani sabon matsayi fiye da wasan kwaikwayon factor.

Features hulda model

Bayan kirga da hulda model sigogi lasafta hulda coefficient.

p - sauki hulda coefficient, -1 ≤ r ≤ 1, shi ya nuna da ƙarfi, kuma shugabanci nuna alama a kan tasiri factor ci. A kusa da 1, da karfi da dangantaka, da kusa da 0, da bond ne weaker. Idan hulda coefficient ne tabbatacce, sa'an nan dangane madaidaici, idan korau - juyawa.

The hulda coefficient dabara: pxy = (x-x * 1 / y) / * EU eh

eh = hh2- (x) 2. EU = y2 (y) 2

Idan CM mikakke multifactorial, da ciwon da tsari:

yx = ao + a1h1 a2x2 + + ... + anx

sa'an nan shi aka lasafta mahara hulda coefficient.

0 ≤ P ≤ 1, da kuma nuna ƙarfi daga cikin sakamako na duk dauka tare factor ci Manuniya.

P = 1- ((yi-yi) 2 / (yi -usr) 2)

Inda: uh - m nuna alama - lasafta darajar.

yi - da ainihin darajar.

usr- ainihin darajar, talakawan.

Kiyasta darajar yi samu yaron da hulda model maimakon x1, x2 da dai sauransu. su ainihin dabi'u.

Domin univariate da multivariate model maras mike hulda rabo da aka lasafta:

-1 ≤ m ≤ 1;

0 ≤ m ≤ 1

An yi imani da cewa dangantaka tsakanin tasiri da kunshe a cikin model na factorial Manuniya rauni, idan tightness na hada guda biyu coefficient (m) a cikin kewayon 0-0.3. idan 0.3-0.7 - kusanci da dangantaka - da talakawan; 0.7-1 sama - mai karfi bond.

Tun da hulda coefficient (tururi) r, da hulda coefficient (mahara) R, hulda rabo m - Yiwuwar darajar, wanda aka lasafta ga coefficients na muhimmanci (a tsare ta alluna). Idan wadannan coefficients ne fiye da tebur darajar, da kusanci da dangane coefficients suke da muhimmanci haddasawa. Idan essentiality tightness hada guda biyu coefficients karami fiye da tebur dabi'u ko idan kai hada guda biyu coefficient ne kasa da 0.7, tsarin bai hada da duk factorial sigogi cewa muhimmanci shafi sakamakon.

A coefficient na tabbatar da dalilin nuna yawan factor kunshe a cikin model sigogi ƙayyade da samuwar sakamakon.

D = P2 * 100%

D = P2 * 100%

D = m 2 * 100%

Idan coefficient na tabbatar da dalilin ne mafi girma daga 50, sannan model mayalwaci bayyana aiwatar a karkashin binciken, idan kasa da 50, shi wajibi ne su koma zuwa mataki na farko na yi, kuma gyaggyarawa zabin factor Manuniya for hada a cikin model.

Fisher Fisher factor ko rarrabẽwa characterizes yadda ya dace da tsarin a matsayin dukan. Idan lasafta rabo ne mafi girma daga tebur, da gina tsarin shi ne ya dace domin bincike, kazalika da Manuniya na shiryawa domin nan gaba shiri. Wajen tebur darajar = 1.5. Idan lasafta darajar ne kasa da tebur, dole ne ka farko gina wani model, ciki har da muhimman abubuwa influencing da sakamakon. Bugu da kari ga yadda ya dace, na] aukacin model to muhimmanci shafi kowane komawa da baya coefficient. Idan lasafta darajar wannan rabo wuce a girma tebur, da komawa da baya coefficient ne muhimmi idan kasa, sa'an nan da factor siga, ga abin da dabara coefficient suna cire daga samfurin lissafin fara sake, amma ba tare da wannan factor.