[jira] [Created] (SPARK-19939) Add support for association rules in ML

["yuhao yang (JIRA)" <ji...@apache.org>]

yuhao yang created SPARK-19939:
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             Summary: Add support for association rules in ML
                 Key: SPARK-19939
                 URL: https://issues.apache.org/jira/browse/SPARK-19939
             Project: Spark
          Issue Type: Improvement
          Components: ML
    Affects Versions: 2.2.0
            Reporter: yuhao yang


Adding another essential characteristic for the Association Rule in Spark ml.fpm.

Support is an indication of how frequently the itemset of an association rule appears in the database and suggests if the rules are generally applicable to the dateset. refer to [https://en.wikipedia.org/wiki/Association_rule_learning] for more details.

Before adding support:
| rules | confidence |
| beer -> soda | 0.5 |
| pecan -> milk | 0.6 |

After adding support: 
| rules | confidence | support |
| beer -> soda | 0.5 | 0.3 |
| pecan -> milk | 0.6 | 0.01 |

Thus to allow a better understanding for the generated association rules.







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