Presentation is loading. Please wait.

Presentation is loading. Please wait.

OVERVIEW OF LEAST-SQUARES, MAXIMUM LIKELIHOOD AND BLUP PART 2

Similar presentations


Presentation on theme: "OVERVIEW OF LEAST-SQUARES, MAXIMUM LIKELIHOOD AND BLUP PART 2"— Presentation transcript:

1 OVERVIEW OF LEAST-SQUARES, MAXIMUM LIKELIHOOD AND BLUP PART 2

2 LIKELIHOOD-BASED INFERENCE

3 1. The likelihood function

4

5

6 3. Information (Fisher’s) contained in the likelihood

7

8

9 5. Asymptotic Properties of Maximum Likelihood Estimators

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25 BEST LINEAR UNBIASED ESTIMATION AND BEST LINEAR UNBIASED PREDICTION

26

27

28

29 C. Alternative method for computing BLUE (GLS) estimator of the vector of fixed effects: known V

30

31

32

33

34

35

36 EXAMPLE: BLUP OF 599 WHEAT LINES

37

38

39

40 IS BLUP OVERFITTING. FITCOR<-cbind(y,MATPAIR) cor(FITCOR) Y. BLUPR
IS BLUP OVERFITTING? FITCOR<-cbind(y,MATPAIR) cor(FITCOR) Y BLUPR BLUP1 BLUP2 BLUP3 BLUP4 BLUP NO EVIDENCE BUT BLUPS CLOSELY CORRELATED

41 ####HOW ABOUT TRAINING MEAN-SQUARED ERROR
####HOW ABOUT TRAINING MEAN-SQUARED ERROR? mse<-numeric(6) for (i in 1:6){ mse[i]<-sum((y-MATPAIR[,i])**2)/n } mse [1]

42


Download ppt "OVERVIEW OF LEAST-SQUARES, MAXIMUM LIKELIHOOD AND BLUP PART 2"

Similar presentations


Ads by Google