The correlation between GDP and research publications is an important issue in scientometrics. This article provides further empirical evidence connecting revealed comparative advantage in national research with effects on economic productivity. Using quantitative time series analysis, this study attempts to determine the nature of causal relationships between research output and economic productivity. One empirical result is that there is mutual causality between research and economic growth in Asia, whereas in Western countries the causality is much less clear. The results may be of use to underdeveloped nations deciding how to direct their academic investment and industry policy.

This study, through bibliometric data, adopts the concept of Revealed Comparative Advantage (RCA) to apply in publication of scientific fields for observing the feature of scientific capacity of a nation. Following that, we utilize a hierarchical clustering method to conduct national clustering according to the RCA scores of publication in 24 scientific fields of each nation. A nation can thoroughly review its relative position, identify other nations with the same characteristics, and understand different clusters' features of scientific capacity. The result also provides a reference that enables researchers to review, explore, and learn about the factors behind the innovation system in the representative clusters or nations. By leveraging the clustering result, this knowledge also allows the nation to grasp opportunities to create innovation by cooperating with other nations that have different comparative advantages. As a result, by accumulating innovation capacity in these research network collaborations, the nation can maintain its innovation momentum and then forge into the innovation lead constantly.

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