7.00.02 - Output - Aster Analytics

Teradata Aster® Analytics Foundation User GuideUpdate 2

Product
Aster Analytics
Release Number
7.00.02
Published
September 2017
Content Type
Programming Reference
User Guide
Publication ID
B700-1022-700K
Language
English (United States)
Last Update
2018-04-17

The rmse value is output for each of the 20 iterations. The null iteration or first row of the table shows the rmse of the default initialized model.

KNNRecommenderTrain Output Table
iternum rmse
  0.4825
0 0.4803
1 0.4780
2 0.4757
3 0.4734
4 0.4710
5 0.4686
6 0.4661
7 0.4636
8 0.4611
9 0.4585
10 0.4560
11 0.4534
12 0.4508
13 0.4482
14 0.4455
15 0.4429
16 0.4403
17 0.4376
18 0.4350
19 0.4323

The sij value (similarity between itemi and itemj) in the following table is the default Pearson correlation coefficient.

SELECT * FROM ml_itemngbrs ORDER BY 1;
KNNRecommenderTrain Default Pearson Correlation Coefficient
itemi itemj sij
1 145 1
1 1235 1
1 2867 1
1 1086 1
1 2067 1
1 7143 1
1 97304 1
1 1882 0.999607184150001
1 2723 0.999351517785325
1 1081 0.998812351124897
1 2301 0.998812351124897
1 26614 0.998812351124897
1 7458 0.998330805669821
1 3624 0.997986152770463
1 1094 0.99714268802795
2 160 1
2 63082 1
2 76251 1
2 4874 1
2 6934 1
2 8636 1
2 33004 1
2 112 0.999314833766767
2 1246 0.999282588328635
2 1259 0.998868137724437
2 349 0.998268396969243
2 223 0.998124077136759
2 8644 0.997785157856609
2 4370 0.997458699830735
2 35836 0.997054485501582
... ... ...

The following querty returns the bias table, which shows the Global (G), User (U) and Item (I) statistics.

SELECT * FROM ml_bias ORDER BY 1, 2;
KNNRecommenderTrain Bias Table
label id value
G   3.53538298436258
I 1 3.78125
I 2 3
I 3 2
I 5 3.16666666666667
I 6 3.65
I 7 3
I 9 3
I 10 3.65
... ... ...