roc curve demo
Download
Skip this Video
Download Presentation
ROC Curve Demo

Loading in 2 Seconds...

play fullscreen
1 / 16

ROC Curve Demo - PowerPoint PPT Presentation


  • 81 Views
  • Uploaded on

ROC Curve Demo. Say 1. Say 0. %1s. 1. 0. | |. %0s. |<-logits of the 1s->|. |. |<-logits of the 0s->|. Say 1. Say 0. Say 1. Say 0. Say 1. Say 0. Say 1. Say 0. Say 1. Say 0. Say 1. Say 0.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' ROC Curve Demo ' - zohar


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide2

Say

1

Say

0

%1s

1

0

| |

%0s

|<-logits of the 1s->|

|

|<-logits of the 0s->|

slide3

Say

1

Say

0

slide4

Say

1

Say

0

slide5

Say

1

Say

0

slide6

Say

1

Say

0

slide7

Say

1

Say

0

slide8

Say

1

Say

0

slide9

Say

1

Say

0

example 2

Example 2

0 1

Say 1

Say 0

X=10

X=13

X=16

1 - specificity

example 21

Example 2

0 1

X=10

X=13

X=16

Say 1

Say 0

(2/25, 18/35)

1 - specificity

example 22

Example 2

0 1

X=10

X=13

X=16

(10/25, 30/35)

(2/25, 18/35)

Say 1

Say 0

1 - specificity

example 23

Example 2

0 1

X=10

X=13

X=16

(10/25, 30/35)

(1, 1)

(2/25, 18/35)

Say 1

Say 0

1 - specificity

example 24

Example 2

0 1

X=10

X=13

X=16

Tie Tie

Say 1

Say 0

18 x 23

1 - specificity

example 25

Example 2

0 1

X=10

X=13

X=16

Tie Tie

15 x 12

Tie

Tie Tie

Say 1

Say 0

18 x 23

Tie

1 - specificity

example 26

Example 2

0 1

X=10

X=13

X=16

15x5/2

Tie Tie

8x12/2

Tie

15 x 12

Tie

Tie Tie

2x18/2

18 x 23

Tie Tie

Say 1

Tie

Say 0

1 - specificity

AUC Area Under Curve = concordant pair plus ½ ties (proportions)

Pairs: 25x35=875 with 0 paired with 1.

Proportion Concordant: (18x23+12x15)/(25x35)=(18/25)x(23/35)+(12/25)x(15/35)

½ Proportion Ties ½(2x18 + 8x12 + 15x5)/(25x35)

AUC = 697.5/875 = 0.7971.

ad