| Comparing Problems |
|
|
|
|
|
|
|
|
|
|
|
|
| If we know A £ B then |
|||||||||||
| • | Intuitively, |
||||||||||
| A is “easier”
than B and B is “harder” than A |
|||||||||||
| • | Knowing how long
B takes give us a bound on how |
||||||||||
| long A takes: |
|||||||||||
| TA
£ TB + translation-time |
|||||||||||
| • | If it’s known
that A is hard (i.e., it requires a certain |
||||||||||
| amount of time)
and if the translation is cheap then B |
|||||||||||
| must also be hard |
|||||||||||
| CS409 - Spring
2000 |
| 2 |