Abstract
The single-machine family scheduling problem of minimizing the number of late jobs has been known to be NP-hard, but whether it is NP-hard in the strong sense is cited as an open problem in several reviews. In this note, we prove that this problem is strongly NP-hard even if all set-up times and processing times are one unit.
Original language | English |
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Pages (from-to) | 225-229 |
Number of pages | 5 |
Journal | Journal of Scheduling |
Volume | 4 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Dec 2001 |
Keywords
- Family scheduling
- Number of late jobs
- Strong NP-hardness
ASJC Scopus subject areas
- Software
- General Engineering
- Management Science and Operations Research
- Artificial Intelligence