Article ID: | iaor200934343 |
Country: | United States |
Volume: | 31 |
Issue: | 2 |
Start Page Number: | 381 |
End Page Number: | 389 |
Publication Date: | May 2006 |
Journal: | Mathematics of Operations Research |
Authors: | Kimbrel Tracy, Sviridenko Maxim, Bansal Nikhil |
Keywords: | job shop |
We consider randomized algorithms for the preemptive job shop problem, or equivalently, the case in which all operations have unit length. We give an α–approximation for the case of two machines where α < 1.45, an improved approximation ratio of O(log