Pub 2015-11-1 214 Economic Science Press of Venus * Performance of High-tech Enterprises Cooperative Innovation - based firm heterogeneity perspective major integrated use of the theory of industrial organization and knowledge management in theory mainly used game theory. take simulation. measurement cases and a variety of methods in empirical research. Follow from theory to practice. from theory to practice ideas. First. according to the reality of economic phenomena summarized in two companies co-developed high-tech it occurs mainly in the information technology industry. represented by high-tech industry; enterprise scale and intensity of innovation co-exhibit U shaped relationship. Next. the abstract for collaborative R & D Performance in the enterprise technology and scale and perspective of two factors influ...