KNNRecommender Syntax - Teradata Vantage

Machine Learning Engine Analytic Function Reference

Product
Teradata Vantage
Release Number
8.00
1.0
Published
May 2019
Language
English (United States)
Last Update
2019-11-22
dita:mapPath
blj1506016597986.ditamap
dita:ditavalPath
blj1506016597986.ditaval
dita:id
B700-4003
lifecycle
previous
Product Category
Teradata Vantage™

Version 1.2

SELECT * FROM KNNRecommender (
  ON user_rating_table AS RatingTable
  OUT TABLE WeightModelTable (weight_model_table)
  OUT TABLE BiasModelTable (bias_model_table)
  [ OUT TABLE NearestItemsTable (item_neighbors_table) ]
  USING
  [ UserIDColumn ('userid_column')
    ItemIDColumn ('itemid_column')
    RatingColumn ('rating_column')
  ]
  [ K (number_of_item_neighbors) ]
  [ LearningRate (learning_rate) ]
  [ MaxIterNum (max_iteration_number) ]
  [ StopThreshold (threshold) ]
  [ SimilarityMethod ({ 'pearson' | 'adjustedcosine' }) ]
) AS alias;