The Correlation coefficient - bath Correlation ea mohlala

Correlation ea mohlala (CM) - lenaneo manolotsoeng hore e fana baeti ba fihlelang ho ya ka abel thuto ea lipalo, eo ho eona pontshi behang quantified ho itšetlehile ka litsupa le 'ngoe kapa ho feta.

yx = Ao + a1h1

moo: y el - litsupa tshebetso, ho itšetlehile ka ya x Ntlha e;

x, - letšoao le palokatiso;

A1 - paramethara KM, le bontša ho phetoho kae ka pontshi behang ha fetola le palokatiso ya x ke e 'ngoe, haeba lintho tse ling tsohle tse amang featswan lula re sa fetohe;

Ao CM paramethara eo bontša phello ea lintho tse ling tse 'ohle a index ea atlehang oa featswan, tse ling tse ho feta ntlha ea polygonal x,

Ha a khetha litsupa atlehang le dikai le palokatiso ba hlokomele 'nete ea hore ke litsupa tshebetso ka ketane ea causality ema boemong bo phahameng ho feta tshebetso lebaka.

Features Correlation ea mohlala

Mora bala ka Correlation ea mohlala entsprechen balwa Correlation coefficient.

E leq - e bonolo Correlation coefficient, -1 ≤ dagelever ≤ 1, ho bontša matla le tataiso pontshi ka tshusumetso le palokatiso lintlha. The haufi le 1, u tla matlafala le kamano eo, e haufi le 0, tlamahano e fokolang haholo. Ha Correlation coefficient e ntle, ka nako eo mabapi ke otlolohile, haeba mpe - felisoa.

The Correlation coefficient moralo: pxy = (x-x, * 1 / featswan) / * eappa eh!

eh! = hh2- (x,) 2; eappa = y2 (y el) 2

Ha CM guttate multifactorial, ho ba le mofuta o le:

yx = Ao + a1h1 a2x2 + + ... + anx

ka nako eo ho ne a balwa multiple Correlation coefficient.

0 ≤ P ≤ 1, 'me se bontša matla a phello ea tsohle nkiloeng hammoho litsupa Ntlha e lintlha.

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

Moo: uh - behang pontshi - balwa boleng;

liu - boleng sebele;

usr- boleng sebele, karolelano.

Hakanngoa boleng liu fumanoa ka emeng ea Correlation ea mohlala sebakeng sa x1, x2 joalo-joalo makgabane bona sebele.

Bakeng sa dikai univariate le multivariate e seng moleng Correlation karo-karolelano e balwa:

-1 ≤ limithara ≤ 1;

0 ≤ limithara ≤ 1

Ho lumeloa hore kamano e pakeng tsa atlehang le kenyelelitsoe ea mohlala ea litsupa factorial fokolang, haeba tightness tsa coupling coefficient (limithara) ka mefuta e fapaneng 0-0.3; haeba 0.3-0.7 - katamelano ea kamano ea - ka karolelano; 0.7-1 holimo - tlamo e matla.

Ho tloha ka Correlation coefficient (mouoane) r bona, ka Correlation coefficient (multiple) R, Correlation karo-karolelano m - boleng kgonego, e balwa ka coefficients tsa bohlokoa tsa bona (ba ka hlaloswang ka litafole). Ha coefficients tsena ke tse fetang boleng bona tafole, le katamelano ea coefficients e mabapi di bakang ea bohlokoa. Ha essentiality tightness coupling coefficients nyenyane ho feta makgabane tafole kapa haeba ho intša coupling coefficient e ka tlase ho 0.7, ea mohlala ha e kenyeletsa entsprechen tsohle factorial hore haholo ama sephetho.

The coefficient la boikemisetso ba bontša Peresente Ntlha e akarelletsa entsprechen ea mohlala beha sebopeho sa lebaka la.

D = P2 * 100%

D = p2 * 100%

D = limithara 2 * 100%

Ha coefficient la boikemisetso ba o moholo ho feta 50, ka nako eo ea mohlala ho lekaneng hlalosang tshebetso tlas'a ithuta, haeba ka tlase ho 50, ho ke ke ho hlokahala ho khutlela ho ba sethaleng sa pele sa kaho, le ho lokisa maikutlo a sa litsupa khetha ntlha e ho kenyelletsoa ka ea mohlala e.

Fisher Fisher le palokatiso kapa criterion ba tsebahala ka bokgoni ba ho ea mohlala ba ka kakaretso. Haeba karo-karolelano balwa o moholo ho feta tafoleng, ea mohlala e hahiloeng ke a loketse bakeng sa ka tlhatlhobisiso hammoho le litsupa tsa thero ea bakeng sa ho fedisa nakong e tlang. Le kakanyo feela e tafole boleng = 1,5. Ha boleng balwa e ka tlase ho tafoleng, o lokela ho qala ka ho haha e le mohlala, ho akarelletsa lintlha tsa bohlokoa susumetsa sephetho. , Ho phaella ho ka bokgoni ba ho ea mohlala ka kakaretso ho haholo ama e mong le e coefficient bofokoli. Ha balwa boleng ba karo-karolelano ena e feta ka tafole boholo, le bofokoli coefficient ke ea bohlokoa haeba tlase, ka nako eo le palokatiso paramethara, ao coefficient hakantse ba tlosoa dipalelo le sampole qala hape, empa a se na le ntlha ena.