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.