id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-349724-yq4dphmb	Santos, Hugo	A Multi-Tier Fog Content Orchestrator Mechanism with Quality of Experience Support	2020-05-06		.txt	text/plain	7209	369	57	For the analysis phase, the Fog4Video collects information about available bandwidth, delay, stall duration, number of stall events, and monetary cost from the network, user client, and fog node. Based on our analysis of the state-of-the-art, we conclude that VoD services deployed in a multi-tier fog architecture improve the QoE by efficiently orchestrating fog nodes resources, while reducing delay and amount of data uploading/downloading to the cloud in a cost efficient fashion. Based on such architecture, Fog4Video classifies the connectivity and resources of each available fog node into a multi-criteria rank, where it considers the AHP method to assign different degrees of importance for each criterion to provide better QoE for each user. Based on these values, Fog4Video implemented in the Orchestrator considers network, fog node, and user information to perform real-time content orchestration, i.e., it chooses an appropriate Streaming Unit from a given tier for the client to download the video.	./cache/cord-349724-yq4dphmb.txt	./txt/cord-349724-yq4dphmb.txt