1.1 - 8.10 - Shapley Value Functions Example: nPath Creates ShapleyGenerateCombination; Step 2 - Teradata Vantage

Teradata Vantage™ - Machine Learning Engine Analytic Function Reference

Product
Teradata Vantage
Release Number
1.1
8.10
Release Date
October 2019
Content Type
Programming Reference
Publication ID
B700-4003-079K
Language
English (United States)

Step 2 uses nPath to create total counts.

CREATE MULTISET TABLE attrtot AS (
  SELECT (
    IND_EMLOP || IND_CLKNI || IND_CLKIN || IND_CLKAC || IND_CLKCO) AS IND,
    num_tot FROM (
      SELECT case when num_EMLOP > 0 then '1' ELSE '0' END AS IND_EMLOP
        , CASE WHEN num_CLKNI > 0 then '1' ELSE '0' END AS IND_CLKNI
        , CASE WHEN num_CLKIN > 0 then '1' ELSE '0' END AS IND_CLKIN
        , CASE WHEN num_CLKAC > 0 then '1' ELSE '0' END AS IND_CLKAC
        , CASE WHEN num_CLKCO > 0 then '1' ELSE '0' END AS IND_CLKCO
        , COUNT (intractn_path) AS num_tot
      FROM nPath@coprocessor (
        ON attrib
        PARTITION BY ind
        ORDER BY ts
        USING
        MODE (nonoverlapping)
        PATTERN ('(B|C|D|E|F)+')
        SYMBOLS (
          int_type = 'EMLOP' AS B,
          int_type = 'CLKNI' AS C,
          int_type = 'CLKIN' AS D,
          int_type = 'CLKAC' AS E,
          int_type = 'CLKCO' AS F)
        RESULT (
          FIRST(ind of ANY(B,C,D,E,F)) AS ind,
          COUNT (int_type of B) AS num_EMLOP,
          COUNT (int_type of C) AS num_CLKNI,
          COUNT (int_type of D) AS num_CLKIN,
          COUNT (int_type of E) AS num_CLKAC,
          COUNT (int_type of F) AS num_CLKCO,
          ACCUMULATE (int_type OF ANY(B,C,D,E,F)
        ) AS intractn_path
      )
    ) AS dt GROUP BY 1,2,3,4,5
  ) a
) WITH DATA;
SELECT * FROM attrtot ORDER BY ind;
 IND   num_tot 
 ----- ------- 
 00001     138
 00010     148
 00011      37
 00100     138
 00101      30
 00110      36
 00111       7
 01000     150
 01001      39
 01010      31
 01011      13
 01100      33
 01101      19
 01110       8
 01111       8
 10000     138
 10001      30
 10010      31
 10011      11
 10100      31
 10101      10
 10110       8
 10111       1
 11000      35
 11001       6
 11010       9
 11011       6
 11100      10
 11101       5
 11110       8
 11111       3