Study on the Innovation Efficiency of Chinese high-tech industry based the method of Dynamic Network DEA

The high-tech industry of China has made great progress,but still in the low end of the value chain,and how to enhance the status of the global value chain has become an urgent problem.Based on the method of dynamic network DEA,the paper calculated the innovation efficiency of Chinese high-tech industry.It found that the innovative efficiency of high-tech industrial based on output value has rising,while the innovative efficiency based on the patent applications was lower,and the innovative efficiency between the output and patent applications has a big gap.The main reason is that China's high-tech industry integration into the international vertical division,imports the intermediate goods for re-export after processing and assembly.This requires further strengthen the independent innovation.