Research Article
Effect of Collaborative Recommender System Parameters: Common Set Cardinality and the Similarity Measure
Table 3
Some statistics of 1 million MovieLens dataset.
| Category | Specifications | Number of ratings | Number of users | Percentage | Total percentage | Ratings range | Mean range |
| C11 | | | 565 | 13 | 0.2152 | 0.596 | C21 | | 25256 | 15 | 0.2483 | C31 | >500 | 130686 | 8 | 0.1325 |
| C12 | | | 2759 | 521 | 8.6258 | 21.2582 | C22 | | 142875 | 580 | 9.6026 | C32 | >500 | 409259 | 183 | 3.0298 |
| C13 | | | 5127 | 2597 | 42.9967 | 78.1457 | C23 | | 137292 | 1918 | 31.7550 | C33 | >500 | 146390 | 205 | 3.3940 |
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