Minor Description
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.
Update:
Another property for association rule is Lift, but I'm not sure if it's popular enough. Please comment below if you find Lift useful.
