# File lib/mirimiri/query.rb, line 62
    def initialize(id,query,params)
      @params = params
      # Here we set the default retrieval model as Language Modeling
      # with a Dirichlet smoothing at 2500.
      # TODO: maybe a Rule class...
      @params.rule  = 'method:dirichlet,mu:2500' if @params.rule.nil?

      @id     = id
      @query  = query
    end