Maciej Szymkiewicz created SPARK-19899:
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Summary: FPGrowth input column naming
Key: SPARK-19899
URL: https://issues.apache.org/jira/browse/SPARK-19899
Project: Spark
Issue Type: Improvement
Components: ML
Affects Versions: 2.2.0
Reporter: Maciej Szymkiewicz
Current implementation extends {{HasFeaturesCol}}. Personally I find it rather
unfortunate. Up to these moment we used consistent conventions - if we mix-in
{{HasFeaturesCol}} the {{featuresCol}} should be {{VectorUDT}}.
Using the same {{Param}} for an {{array<T>}} (and possibly for
{{array<arrray<T>>}} once {{PrefixSpan}} is ported to {{ml}}) will be confusing
for the users.
I would like to suggest adding new {{trait}} (let's say {{HasTransactionsCol}})
to clearly indicate that the input type differs for the other {{Estiamtors}}.
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