public static AbstractRunner < Long , Long > instantiateRecommender ( final Properties properties ) { if ( properties . getProperty ( RECOMMENDER ) == null ) { System . out . println ( "No recommenderClass specified, exiting." ) ; return null ; } if ( properties . getProperty ( TRAINING_SET ) == null ) { System . out . println ( "No training set specified, exiting." ) ; return null ; } if ( properties . getProperty ( TEST_SET ) == null ) { System . out . println ( "No training set specified, exiting." ) ; return null ; } AbstractRunner < Long , Long > rr = null ; if ( properties . getProperty ( FRAMEWORK ) . equals ( MAHOUT ) ) { rr = new MahoutRecommenderRunner ( properties ) ; } else if ( properties . getProperty ( FRAMEWORK ) . equals ( LENSKIT ) ) { rr = new LenskitRecommenderRunner ( properties ) ; } else if ( properties . getProperty ( FRAMEWORK ) . equals ( RANKSYS ) ) { rr = new RanksysRecommenderRunner ( properties ) ; } return rr ; }
Instantiates a recommender according to the provided properties mapping .