| An Example |
| (due to MIT’s open
coursework slides) |
| f1 |
| f2 |
| f3 |
| f4 |
| y |
|
|
| R1(1,1)
= 1/5: fraction of all positive |
|
| examples that have feature
1 = 1 |
|
| R1(0,1)
= 4/5: fraction of all positive |
|
| examples that have feature
1 = 0 |
|
| 0 |
| 1 |
| 1 |
| 0 |
| 1 |
| 0 |
| 0 |
| 1 |
| 1 |
| 1 |
| 1 |
| 0 |
| 1 |
| 0 |
| 1 |
| 0 |
| 0 |
| 1 |
| 1 |
| 1 |
|
|
| R1(1,0)
= 5/5: fraction of all negative |
|
| examples that have feature
1 = 1 |
|
| R1(0,0)
= 0/5: fraction of all negative |
|
| examples that have feature
1 = 0 |
|
| 0 |
| 0 |
| 0 |
| 0 |
| 1 |
| 1 |
| 0 |
| 0 |
| 1 |
| 0 |
| 1 |
| 1 |
| 0 |
| 1 |
| 0 |
| 1 |
| 0 |
| 0 |
| 0 |
| 0 |
| Continue calculation of R2(1,0)
… |
| 1 |
| 1 |
| 0 |
| 1 |
| 0 |
| 1 |
| 0 |
| 1 |
| 1 |
| 0 |
