The function mapping definition usr_SVMSparse specifies a substitution of ModelTable for model_table in the OUT TABLE clause.
CREATE FUNCTION MAPPING usr_SVMSparse FOR SparseSVMTrainer SERVER TD_SERVER_DB.coprocessor USING InputTable IN TABLE , ModelTable(model_table) OUT TABLE , IDColumn , SampleIdColumn , AttributeColumn(AttributeNameColumn) , LabelColumn(ResponseColumn), ValueColumn(AttributeValueColumn), HashProjection , "Hash" , HashBuckets , Cost , Bias , ClassWeights , MaxStep , Epsilon , Seed , SequenceInputBy ;