Macher, Jeffrey T.; Rutzer, Christian; Weder, Rolf - 2023
(the CD index) that characterizes innovation in science and technology as either consolidating or disruptive. We challenge … truncation of all backward citations before 1976. We also show that this truncation bias varies by technology class. We update … the analysis to 2016 and account for a change in U.S. patent law that allows for citations to patent applications in …
