We consider three mixture models which respectively capture structural relevance, message relevance, and both structural and message relevance. Since the results of query processing are not always correct, we add to each model a back-off relevance measurement R(Qt, Gt) which measures the relevance of all the words in the query to all the words in a candidate infographic. In addition, we include a baseline model that treats the words in the graphic and the words in the query as two bags of words and measures their relevance to one another.