This is a plausible ratio of performance. SQL data models need aggressive caching.
On Mon, Dec 26, 2011 at 2:12 PM, deneche abdelhakim <[email protected]>wrote: > I am trying to run an item based recommender on movielens 100k example, > I'am looping through a quarter of the items calling > recommender.getMostSimilarItems(10) for each of them. The FileDataModel > takes no more than 5s but the MySQLJDBCDataModel requires more than 300s. > Is this expected ? >
