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Stevan-Radovanovic
MachineLearningCollection-R
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1. Linearna regresija
Znacajni su svi prediktori sa p vrednoscu manjom od 0.05
R vrednost - deo varijabiliteta zavisne promenljive opisan pomocu zavisnih promenljivih
1. grafik (horizontalna crvena linija, ravnomerno rasporedjene obzervacije)
Postoji linearna zavisnost izmedju zavisne i nezavisnih
2. grafik (obzervacije prate liniju)
Reziduali su normalno distribuirani
3. grafik (horizontalna crvena linija, ravnomerno rasporedjene obzervacije)
Reziduali su homoskedasticni
4. grafik (autlajeri u kukovoj distanci)
Postoje autlajeri koji su signifikantni
Rmse/Mean - Greska je koliko procenata srednje vrednosti?
2. K-Means
Within SS - Zbir razdaljina svih obzervacija u klasteru i njegovog centra
Between SS - Zbir razdaljina centara klastera i srednje vrednosti celog skupa
Tot SS - Zbir razdaljina svih obzervacija u setu i srednje vrednosti celog skupa
Ratio - sto veci to bolji - Between/Tot
3. Matrica konfuzije
TP - predvideli pozitivno,jeste pozitivno
TN - predvideli negativno, jeste negativno
FP - predvideli pozitivno, nije pozitivno
FN - predvideli negativno, nije negativno
Acc - koliko smo tacno predvideli
Precision - od svih predvidjenih pozitivnih, koliko su pozitivni
Recall - od svih pozitivnih, koliko su predvidjeni pozitivno
F1 - Ukupna metrika
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