A quality-of-experience optimization system configured to optimize quality (QoE: Quality of Experience) that a user experiences in a content distribution service, including: a recommend request apparatus configured to output a distribution parameter candidate of content distribution for optimizing QoE of content distribution, and to receive a distribution parameter for optimizing the QoE as a recommend value; and a quality-of-experience optimization apparatus configured to estimate QoE from the distribution parameter candidate received from the recommend request apparatus, and to calculate a distribution parameter for optimizing the QoE as a recommend value to output the recommend value.
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