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| Parameters | Definition |
|
| Attribute of video |
| Similarity of access relation between videos |
| Number of request association relation |
| Vector of video similarity values |
| degree value of any video |
| Characteristic value of |
| matrix Of characteristic vectors |
| Set of video clusters |
| Membership of belonging to |
| Interest level of for |
| Average wait delay |
| Viewing log of user |
| Probability of pushing video with encounter |
| Frequency of video sharing between users |
| Average wait delay |
| Probability of requesting video with encounter |
| Rate of request and handling |
| Acceptation probability |
| Content similarity between videos |
| Video similarity |
| Total number of video logs |
| matrix Of video vectors |
| Standardized laplacian matrix |
| Set of characteristic values of |
| Video cluster |
| Distance between and |
| Membership of video to cluster centric |
| Acceptance probability of for |
| Interest domain of user |
| Interest level of for |
| Average serving capacity of user |
| Number of request messages |
| Probability of users becoming neighbors |
| Probability of pushing video with encounter |
| Rate of request and handling |
| P (r) | Probability of r-th requested video |
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