Article ID: | iaor20111956 |
Volume: | 21 |
Issue: | 2 |
Start Page Number: | 247 |
End Page Number: | 253 |
Publication Date: | Feb 2011 |
Journal: | Journal of Combinatorial Optimization |
Authors: | Yao Enyu, Liu Longcheng, Wu Biao |
Keywords: | greedy algorithms, NP-complete, axioms |
A linear extension problem is defined as follows: Given a poset