don't run match on empty set of objects
don't run match on empty set of objects

nikken1/patentprocessor,yngcan/patentprocessor,yngcan/patentprocessor,funginstitute/patentprocessor,funginstitute/patentprocessor,nikken1/patentprocessor,yngcan/patentprocessor,funginstitute/patentprocessor,nikken1/patentprocessor