nl_tokens: Train the classifier with all the given documents .
pl_tokens: function ( dataset ) { dataset = dataset . map ( function ( datum ) { var normalizedLabels = multilabelutils . normalizeOutputLabels ( datum . output ) ; for ( var i in normalizedLabels ) this . allClasses [ normalizedLabels [ i ] ] = true ; return { input : datum . input , output : normalizedLabels . map ( this . splitLabel ) } } , this ) ; // [ [ 'Offer', 'Leased Car', 'Without leased car' ], [ 'Offer', 'Working Hours', '9 hours' ] ] return this . trainBatchRecursive ( dataset , this . <mask> ) ; }