-c, --correl_field


unique id column, aka “group id” field

Argument and Default Value

Name of the table column


This field specifies which MySQL column will be used to identify “documents”, i.e. the “unit” of analysis of your command. If you’re looking to analyze the language of a Twitter user, -c will be something like user_id, whereas if you’re looking to analyze/extract features at a message level, -c should be something like message_id. This has to be a column in the message table (-t) and (if that’s what you’re doing) a column in the --outcome_table.