Example: XGBoost for Classification | TD_XGBoost | Teradata Vantage - TD_XGBoost for JSON Tree Model String - Analytics Database

Database Analytic Functions

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2024-04-06
dita:mapPath
gjn1627595495337.ditamap
dita:ditavalPath
ayr1485454803741.ditaval
dita:id
jmh1512506877710
Product Category
Teradata Vantageā„¢

This section shows the input table, SQL query, and output tables of an example using TD_XGBoost for a JSON tree model string in multiple rows.

InputTable

The input is a housing_full dataset sample, with 13 feature columns and a target (response) column 'medv'.
The following table shows only a part of the dataset.
crim zn indus chas nox rm age dis rad tax ptratio b lstat medv partition_id
0.04379 80.0 3.37 0.0 0.398 5.787 31.1 6.6115 4.0 337.0 16.1 396.9 10.24 19.4 5
0.00632 18.0 2.31 0.0 0.538 6.575 65.2 4.09 1.0 296.0 15.3 396.9 4.98 24.0 31
0.05789 12.5 6.07 0.0 0.409 5.878 21.4 6.498 4.0 345.0 18.9 396.21 8.1 22.0 5
0.02731 0.0 7.07 0.0 0.469 6.421 78.9 4.9671 2.0 242.0 17.8 396.9 9.14 21.6 31
0.13554 12.5 6.07 0.0 0.409 5.594 36.8 6.498 4.0 345.0 18.9 396.9 13.09 17.4 5
0.02729 0.0 7.07 0.0 0.469 7.185 61.1 4.9671 2.0 242.0 17.8 392.83 4.03 34.7 31
0.12816 12.5 6.07 0.0 0.409 5.885 33.0 6.498 4.0 345.0 18.9 396.9 8.79 20.9 5
0.03237 0.0 2.18 0.0 0.458 6.998 45.8 6.0622 3.0 222.0 18.7 394.63 2.94 33.4 31
0.08826 0.0 10.81 0.0 0.413 6.417 6.6 5.2873 4.0 305.0 19.2 383.73 6.72 24.2 5
0.02985 0.0 2.18 0.0 0.458 6.43 58.7 6.0622 3.0 222.0 18.7 394.12 5.21 28.7 31

SQL Call

SELECT * FROM TD_XGBoost (
ON housing_full PARTITION BY ANY
OUT TABLE MetaInformationTable(xgb_out)
USING
  ResponseColumn('medv')
  InputColumns('[0:3]')
  MaxDepth(10)
  MinNodeSize(1)
  NumParallelTrees(2)
  ModelType('REGRESSION')
  Seed(1)   
  RegularizationLambda(1000)
  LearningRate(0.8)
  NumBoostRounds(1)
  ColumnSampling(1.0)  
) AS dt;

Output

task_index tree_num iter tree_order regression_tree
---------- -------- ---- ---------- --------------- 
0          -1       -1   -1         {"lossType":"MSE","numBoostedTrees":2,"iterNum":1,"avgResponses":0.000000}
0           1        1    0         {"id_":1,"sum_":3560.900000,"sumSq_":96768.030000,"size_":143,"maxDepth_":10,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":3.985000,"attr_":"indus","type_":"REGRESSION_NUMERIC_SPLIT","score_":3039.486683,"scoreImprove_":3039.486683,"leftNodeSize_":41,"rightNodeSize_":102},"
{"id_":2,"sum_":1319.100000,"sumSq_":45601.330000,"size_":41,"maxDepth_":9,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":0.500000,"attr_":"chas","type_":"REGRESSION_NUMERIC_SPLIT","score_":526.668180,"scoreImprove_":526.668180,"leftNodeSize_":39,"rightNodeSize_":2},"leftCh
{"id_":4,"sum_":1223.100000,"sumSq_":40985.330000,"size_":39,"maxDepth_":8,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":0.067920,"attr_":"crim","type_":"REGRESSION_NUMERIC_SPLIT","score_":628.809286,"scoreImprove_":628.809286,"leftNodeSize_":22,"rightNodeSize_":17},"leftCh
{"id_":8,"sum_":612.300000,"sumSq_":17947.470000,"size_":22,"maxDepth_":7,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":0.035810,"attr_":"crim","type_":"REGRESSION_NUMERIC_SPLIT","score_":293.582941,"scoreImprove_":293.582941,"leftNodeSize_":9,"rightNodeSize_":13},"leftChi
{"id_":16,"sum_":290.000000,"sumSq_":9699.460000,"size_":9,"maxDepth_":6,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":3.150000,"attr_":"indus","type_":"REGRESSION_NUMERIC_SPLIT","score_":195.360556,"scoreImprove_":195.360556,"leftNodeSize_":8,"rightNodeSize_":1},"leftChi
{"id_":32,"sum_":244.600000,"sumSq_":7638.300000,"size_":8,"maxDepth_":5,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":0.980000,"attr_":"indus","type_":"REGRESSION_NUMERIC_SPLIT","score_":39.446429,"scoreImprove_":39.446429,"leftNodeSize_":1,"rightNodeSize_":7},"leftChild_
{"id_":64,"sum_":24.700000,"sumSq_":610.090000,"size_":1,"maxDepth_":0,"value_":24.700000,"nodeType_":"REGRESSION_LEAF","prediction_":0.019740},"rightChild_":
{"id_":65,"sum_":219.900000,"sumSq_":7028.210000,"size_":7,"maxDepth_":4,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":0.012035,"attr_":"crim","type_":"REGRESSION_NUMERIC_SPLIT","score_":52.116571,"scoreImprove_":52.116571,"leftNodeSize_":2,"rightNodeSize_":5},"leftChild_"
{"id_":130,"sum_":54.200000,"sumSq_":1520.840000,"size_":2,"maxDepth_":3,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":0.010010,"attr_":"crim","type_":"REGRESSION_NUMERIC_SPLIT","score_":52.020000,"scoreImprove_":52.020000,"leftNodeSize_":1,"rightNodeSize_":1},"leftChild_"
{"id_":260,"sum_":32.200000,"sumSq_":1036.840000,"size_":1,"maxDepth_":0,"value_":32.200000,"nodeType_":"REGRESSION_LEAF","prediction_":0.025734},"rightChild_":
{"id_":261,"sum_":22.000000,"sumSq_":484.000000,"size_":1,"maxDepth_":0,"value_":22.000000,"nodeType_":"REGRESSION_LEAF","prediction_":0.017582}},"rightChild_":
{"id_":131,"sum_":165.700000,"sumSq_":5507.370000,"size_":5,"maxDepth_":3,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":0.013715,"attr_":"crim","type_":"REGRESSION_NUMERIC_SPLIT","score_":6.384500,"scoreImprove_":6.384500,"leftNodeSize_":1,"rightNodeSize_":4},"leftChild_":
{"id_":262,"sum_":35.400000,"sumSq_":1253.160000,"size_":1,"maxDepth_":0,"value_":35.400000,"nodeType_":"REGRESSION_LEAF","prediction_":0.028292},"rightChild_":
{"id_":263,"sum_":130.300000,"sumSq_":4254.210000,"size_":4,"maxDepth_":2,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":0.030610,"attr_":"crim","type_":"REGRESSION_NUMERIC_SPLIT","score_":7.207500,"scoreImprove_":7.207500,"leftNodeSize_":3,"rightNodeSize_":1},"leftChild_":
{"id_":526,"sum_":95.400000,"sumSq_":3036.200000,"size_":3,"maxDepth_":1,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":46.250000,"attr_":"zn","type_":"REGRESSION_NUMERIC_SPLIT","score_":2.160000,"scoreImprove_":2.160000,"leftNodeSize_":1,"rightNodeSize_":2},"leftChild_":
{"id_":1052,"sum_":33.000000,"sumSq_":1089.000000,"size_":1,"maxDepth_":0,"value_":33.000000,"nodeType_":"REGRESSION_LEAF","prediction_":0.026374},"rightChild_":
{"id_":1053,"sum_":62.400000,"sumSq_":1947.200000,"size_":2,"maxDepth_":0,"value_":31.200000,"nodeType_":"REGRESSION_LEAF","prediction_":0.049820}},"rightChild_":
{"id_":527,"sum_":34.900000,"sumSq_":1218.010000,"size_":1,"maxDepth_":0,"value_":34.900000,"nodeType_":"REGRESSION_LEAF","prediction_":0.027892}}}}},"rightChild_":
{"id_":33,"sum_":45.400000,"sumSq_":2061.160000,"size_":1,"maxDepth_":0,"value_":45.400000,"nodeType_":"REGRESSION_LEAF","prediction_":0.036284}},"rightChild_":
{"id_":17,"sum_":322.300000,"sumSq_":8248.010000,"size_":13,"maxDepth_":6,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":2.210000,"attr_":"indus","type_":"REGRESSION_NUMERIC_SPLIT","score_":127.956958,"scoreImprove_":127.956958,"leftNodeSize_":2,"rightNodeSize_":11},"leftCh
{"id_":34,"sum_":64.300000,"sumSq_":2098.450000,"size_":2,"maxDepth_":5,"nodeType_":"REGRESSION_NODE","split_":
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{"id_":68,"sum_":28.200000,"sumSq_":795.240000,"size_":1,"maxDepth_":0,"value_":28.200000,"nodeType_":"REGRESSION_LEAF","prediction_":0.022537},"rightChild_":
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{"id_":140,"sum_":112.300000,"sumSq_":2538.410000,"size_":5,"maxDepth_":3,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":2.805000,"attr_":"indus","type_":"REGRESSION_NUMERIC_SPLIT","score_":6.844500,"scoreImprove_":6.844500,"leftNodeSize_":1,"rightNodeSize_":4},"leftChild_":
{"id_":280,"sum_":24.800000,"sumSq_":615.040000,"size_":1,"maxDepth_":0,"value_":24.800000,"nodeType_":"REGRESSION_LEAF","prediction_":0.019820},"rightChild_":
{"id_":281,"sum_":87.500000,"sumSq_":1923.370000,"size_":4,"maxDepth_":2,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":0.037580,"attr_":"crim","type_":"REGRESSION_NUMERIC_SPLIT","score_":3.520833,"scoreImprove_":3.520833,"leftNodeSize_":1,"rightNodeSize_":3},"leftChild_":
{"id_":562,"sum_":23.500000,"sumSq_":552.250000,"size_":1,"maxDepth_":0,"value_":23.500000,"nodeType_":"REGRESSION_LEAF","prediction_":0.018781},"rightChild_":
{"id_":563,"sum_":64.000000,"sumSq_":1371.120000,"size_":3,"maxDepth_":1,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":40.000000,"attr_":"zn","type_":"REGRESSION_NUMERIC_SPLIT","score_":5.606667,"scoreImprove_":5.606667,"leftNodeSize_":2,"rightNodeSize_":1},"leftChild_":
{"id_":1126,"sum_":44.600000,"sumSq_":994.760000,"size_":2,"maxDepth_":0,"value_":22.300000,"nodeType_":"REGRESSION_LEAF","prediction_":0.035609},"rightChild_":
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{"id_":282,"sum_":57.700000,"sumSq_":1664.690000,"size_":2,"maxDepth_":2,"nodeType_":"REGRESSION_NODE","split_":
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{"id_":9,"sum_":610.800000,"sumSq_":23037.860000,"size_":17,"maxDepth_":7,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":0.634095,"attr_":"crim","type_":"REGRESSION_NUMERIC_SPLIT","score_":185.457025,"scoreImprove_":185.457025,"leftNodeSize_":13,"rightNodeSize_":4},"leftChi
{"id_":18,"sum_":490.900000,"sumSq_":19355.010000,"size_":13,"maxDepth_":6,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":0.564205,"attr_":"crim","type_":"REGRESSION_NUMERIC_SPLIT","score_":354.025315,"scoreImprove_":354.025315,"leftNodeSize_":11,"rightNodeSize_":2},"leftChi
{"id_":36,"sum_":390.900000,"sumSq_":14355.010000,"size_":11,"maxDepth_":5,"nodeType_":"REGRESSION_NODE","split_":
{"splitValue_":0.372250,"attr_":"crim","type_":"REGRESSION_NUMERIC_SPLIT","score_":85.523669,"scoreImprove_":85.523669,"leftNodeSize_":7,"rightNodeSize_":4},"leftChild_"
{"id_":72,"sum_":234.000000,"sumSq_":8130.460000,"size_":7,"maxDepth_":4,"nodeType_":"REGRESSION_NODE","split_":
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{"id_":290,"sum_":21.400000,"sumSq_":457.960000,"size_":1,"maxDepth_":0,"value_":21.400000,"nodeType_":"REGRESSION_LEAF","prediction_":0.017103},"rightChild_":
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{"id_":582,"sum_":38.700000,"sumSq_":1497.690000,"size_":1,"maxDepth_":0,"value_":38.700000,"nodeType_":"REGRESSION_LEAF","prediction_":0.030929},"rightChild_":
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{"id_":294,"sum_":33.800000,"sumSq_":1142.440000,"size_":1,"maxDepth_":0,"value_":33.800000,"nodeType_":"REGRESSION_LEAF","prediction_":0.027013},"rightChild_":
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