Link to current text
CMP.6:3 - Forces
| Force | What must be reconciled |
|---|
| Cheap information and useful direction | A local signal is accessible but can omit interactions determining the effect of a change. |
| Large progress and model validity | A large step may save iterations or leave the region where its prediction applies. |
| Feasibility and improvement | An improving unconstrained move can violate the original conditions. |
| Local and global conclusions | A local stopping test needs additional structure to establish a global optimum. |
| Iteration count and work per iteration | A stronger update may require more information or computation. |
| Computed and receiving criteria | Decreasing a surrogate or training loss can leave the intended use unchanged or worse. |