Research Article
An Effective Recommender Algorithm for Cold-Start Problem in Academic Social Networks
Table 2
The experimental statistics in the context of cold start.
| Algorithms | Data gathering series number | Cold-start parameters | New items | New users | Existing users | totNRI_EU | totNRI_NU | avgNRI_EU | avgNRI_NU |
| Collaborative | CF_Series1 | 100 | 8 | 864 | 0 | 0 | 0 | 0 | CF_Series2 | 99 | 5 | 869 | 0 | 0 | 0 | 0 | CF_Series3 | 98 | 6 | 875 | 0 | 0 | 0 | 0 |
| Content-based | CB_Series1 | 99 | 7 | 882 | 3112 | 0 | 3.528 | 0 | CB_Series2 | 101 | 9 | 891 | 3156 | 0 | 3.542 | 0 | CB_Series3 | 100 | 8 | 899 | 3190 | 0 | 3.548 | 0 |
| ECSN | ECSN_Series1 | 99 | 7 | 906 | 3720 | 27 | 4.106 | 3.857 | ECSN_Series2 | 100 | 5 | 911 | 3769 | 18 | 4.137 | 3.6 | ECSN_Series3 | 98 | 9 | 920 | 3792 | 34 | 4.122 | 3.778 |
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