Prior work suggests that more valuable patents are cited more and this view has become standard in the empirical innovation literature. Using an NPE-derived dataset with patent-specific revenues we find that the relationship of citations to value in fact forms an inverted-U, with fewer citations at the high end of value than in the middle.…Read More
The value of a patent traditionally depends on the number of citations it receives from subsequent innovations. But new research from Wharton management professor Tyler Wry and doctoral student Adam Castor calls into doubt whether citation numbers accurately reflect a patent’s true value.…Read More
Insight into the growth (or shrinkage) of “knowledge communities” of authors that build on each other’s work can be gained by studying the evolution over time of clusters of documents. We cluster documents based on the documents they cite in common using the Streemer clustering method, which finds cohesive foreground clusters (the knowledge communities) embedded in a diffuse background.…Read More
