Integrating Pareto Optimization in Semantic and Faceted Search

Semantic/Faceted Search and Pareto Optimization Is there a way to include Pareto optimization approaches to a semantic search or faceted search in our community? I am used to using SPARQL to combine independent facets/requests in one query kind of like a filter. What would be needed for dependent facets where one parameter can only be improved if another is worsened (Pareto)? Has anyone ever seen anything like that using semantic technologies?