How many different affiliations do the authors of 'Design of IIR filters with alternative intensification and diversification ability using PSO' have?
Count the different affiliations of the authors of 'Design of IIR filters with alternative intensification and diversification ability using PSO'.
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { <https://dblp.org/rec/conf/iscit/YamamotoS17> <https://dblp.org/rdf/schema#authoredBy> ?x . ?x <https://dblp.org/rdf/schema#primaryAffiliation> ?answer }
<https://dblp.org/rec/conf/iscit/YamamotoS17>