This paper was first published in 2008 (and has since been beaten several times over by more modern techniques). a quick glance doesn't suggest that there's any

This paper was first published in 2008 (and has since been beaten several times over by more modern techniques). a quick glance doesn't suggest that there's anything obviously new in this version, is there a reason it has a new date? Original: https://dl.acm.org/doi/10.5555/1788888.1788900 https://dl.acm.org/doi/10.5555/1788888.1788900 to those curious about this area, one of the most recent and fastest results is this one from pandey et al: https://arxiv.org/abs/1706.00990 https://arxiv.org/abs/1706.00990