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Researchers have developed several social-based routing protocols for delay tolerant networks (DTNs) over the past few years. Two main routing metrics to support social-based routing in DTNs are centrality and similarity metrics. These two metrics help packets decide how to travel through the network to achieve short delay or low drop rate. This study presents a new routing scheme called Community-Relevance based Opportunistic routing (CROP). CROP uses a different message forwarding approach indoi:10.1109/wcnc.2013.6554861 dblp:conf/wcnc/ChangC13 fatcat:3yyvkcgn3vfnvemsrtxdg2lvj4