| Article ID: | iaor1989712 |
| Country: | India |
| Volume: | 26 |
| Issue: | 2 |
| Start Page Number: | 77 |
| End Page Number: | 95 |
| Publication Date: | Jun 1989 |
| Journal: | OPSEARCH |
| Authors: | Paparrizos Konstantinos |
The original example of Avis and Chvátal is shown to provide exponential behaviour for certain pivoting rules using past history. A rearrangement of the variables in the example produces an improvement for Bland’s rule. In the completely degenerate case, this improvement replaces a linear growth in the number of pivot steps by an exponential growth.