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yuhao yang commented on SPARK-11069: ------------------------------------ [~levente.torok.ge] use val regexTokenizer = new RegexTokenizer() *{color:red} .setToLowercase(false){color}* > Add RegexTokenizer option to convert to lowercase > ------------------------------------------------- > > Key: SPARK-11069 > URL: https://issues.apache.org/jira/browse/SPARK-11069 > Project: Spark > Issue Type: New Feature > Components: ML > Reporter: Joseph K. Bradley > Assignee: yuhao yang > Priority: Minor > Fix For: 1.6.0 > > > Tokenizer converts strings to lowercase automatically, but RegexTokenizer > does not. It would be nice to add an option to RegexTokenizer to convert to > lowercase. Proposal: > * call the Boolean Param "toLowercase" > * set default to false (so behavior does not change) > *Q*: Should conversion to lowercase happen before or after regex matching? > * Before: This is simpler. > * After: This gives the user full control since they can have the regex treat > upper/lower case differently. > --> I'd vote for conversion before matching. If a user needs full control, > they can convert to lowercase manually. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org