KMeansPredict Example | Teradata Vantage - KMeansPredict Example - Teradata Vantage

Machine Learning Engine Analytic Function Reference
Product
Teradata Vantage
Release Number
9.02
9.01
2.0
1.3
Published
February 2022
Language
English (United States)
Last Update
2022-02-10
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dita:id
B700-4003
lifecycle
previous
Product Category
Teradata Vantage™

This example uses the table of cluster centroids output by a KMeans function example.

Input

  • InputTable1: computers_test1

    The test data in this table is personal computer attributes—price, speed, hard disk size, RAM, and screen size. The table has over 1000 rows. If a row contains a null value, KMeansPredict assigns the cluster ID -1 to that row.

  • InputTable2: kmeanssample_centroid, the table of cluster centroids output by KMeans Example: NumClusters, UnpackColumns ('true')
computers_test1
id price speed hd ram screen
10 2575 50 210 4 15
11 2195 33 170 8 15
15 2699 50 212 8 14
29 3095 33 340 16 14
30 3244 66 245 8 14
38 3795 66 500 8 14
45 3495 50 340 16 14
46 2695 33 245 8 14
48 1749 25 120 4 14
51 2499 33 170 4 14
52 2395 33 130 4 14
59 2945 66 210 8 17
65 2195 66 85 2 14
66 1495 25 170 4 14
70 3095 66 245 8 14
86 1999 33 120 8 14
91 2975 50 210 4 17
92 2145 66 130 4 14
93 2420 33 170 8 15
94 2505 50 210 8 14
104 2999 66 330 4 15
... ... ... ... ... ...

SQL Call

SELECT * FROM KMeansPredict(
  ON computers_test1 AS InputTable1 PARTITION BY ANY
  ON kmeanssample_centroid2 AS InputTable2 DIMENSION
) AS dt;

Output

 id   clusterid price  speed hd     ram  screen 
 ---- --------- ------ ----- ------ ---- ------ 
 5628         5 1749.0  66.0  545.0  8.0   15.0
  734         5 1879.0  50.0  210.0  4.0   15.0
  122         7 2199.0  33.0  210.0  4.0   14.0
 3140         5 1744.0  50.0  107.0  2.0   14.0
  591         7 2245.0  33.0  250.0  8.0   15.0
 3405         0 1195.0  25.0  107.0  2.0   14.0
 3609         4 1695.0  50.0  214.0  4.0   14.0
 4343         4 1588.0  33.0  340.0  4.0   15.0
 5485         2 3090.0 100.0 1000.0 24.0   15.0
 5811         5 1740.0  50.0  528.0  8.0   15.0
 ...

Download a zip file of all examples and a SQL script file that creates their input tables.