Platform For AI:ALS prediction

Limits

This component supports the MaxCompute and Flink computing engines.

Configure component parameters

• Input port

  Input port (left to right)	Data type	Recommended upstream components	Required
  User factor table	None	ALS Matrix Factorization	Yes
  Item factor table	None	ALS Matrix Factorization	Yes
  Input data to be scored	None	Read Table Read CSV File Data Preprocessing	Yes

• Component parameters

  Tab	Parameter	Description
  Field Settings	User column	Name of the user ID column in the input data source. Must be BIGINT type.
  	Item column	Name of the item column in the input data source. Must be BIGINT type.
  Parameter Settings	Prediction result column name	Column name in the output table for storing scoring results.
  	Output table lifecycle	Lifecycle of the output table.
  Execution Tuning	Number of workers	Value must be in the range of 1 to 9999.
  	Memory size per worker	Value must be in the range of 1024 MB to 64 × 1024 MB.

• Output port

  Output port (left to right)	Data type	Downstream components
  Scoring result table	None	None

Usage example

User and item factor tables for scoring:

• Output user factor table

  user_id	factors
  8528750	[0.026986524,0.03350178,0.03532385,0.019542359,0.020429865,0.02046867,0.022253247,0.027391396,0.018985065,0.04889483]
  282500	[0.116156064,0.07193632,0.090851225,0.017075706,0.025412979,0.047022138,0.12534861,0.05869226,0.11170533,0.1640192]
  4895250	[0.038429666,0.061858658,0.04236993,0.055866677,0.031814687,0.0417443,0.012085311,0.0379342,0.10767074,0.028392972]
  ...	...

• Output item factor table

  item_id	factors
  24601	[0.0063337763,0.026349949,0.0064828005,0.01734504,0.022049638,0.0059205987,0.008568814,0.0015981696,0.0,0.013601779]
  26699	[0.0027524426,0.0043066847,0.0031336215,0.00269448,0.0022347474,0.0020477585,0.0027995422,0.0025390312,0.0033011117,0.003957773]
  20751	[0.03902271,0.050952066,0.032981463,0.03862796,0.048720762,0.027976315,0.02721664,0.018149626,0.0149896275,0.026251089]
  ...	...

Scoring result table: