The obtained policies fall into two main categories: (1) fixed-latency policies (Ma et al., 2019;Dalvi et al., 2018) and (2) context-dependent adaptive policies (Grissom II et al., 2014;Cho and Esipova, 2016;Gu et al., 2017;Alinejad et al., 2018;Arivazhagan et al., 2019;Zheng et al., 2019a).
this greedy policy may not always be the best choice for all situations.