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 … the Park et al. (2023) methodology and findings, principally around concerns of truncation bias and exclusion bias. We … truncation of all backward citations before 1976. We also show that this truncation bias varies by technology class. We update …