| 摘要 |
<p>[Problem] To provide a content distribution system, etc. capable of suitably performing placement of content according to the status of viewing quality of each of the content units in order to improve the quality of distribution. [Solution] A content distribution system in which a content distribution device (10), a cache distribution device (30), and a content placement determination device (20) are connected to any number of client devices (40), wherein the content placement determination device has an access frequency collection unit (201) for collecting access frequency information by content unit and by playback bit rate in order to calculate an access frequency, a viewing quality estimation unit (202) for calculating an expected value of a viewing quality on the basis of the access frequency, a score determination unit (203) for calculating a score which treats the expected value of the viewing quality as a value per unit capacity, and a data placement determination unit (204) for determining content data to be cached according to the calculated score.</p> |
