“…Nevertheless, traditional DEA methods, such as those proposed by CCR and BCC, as well as the slacks-based measure (SBM) approach, consider the operation a "black box," a characterization that cannot appropriately capture the innovation process (Banker et al, 1984;Charnes et al, 1978;Pastor, Ruiz, & The Economics and Finance Letters, 2022, 9(2): 244-256 Sirvent, 1999;Tone, 2001). Therefore, scholars have developed many other methods to calculate innovation efficiency, including network DEA (Kang, Feng, Chou, Wey, & Khan, 2022;Min et al, 2020;Wang, Pan, Pei, Yi, & Yang, 2020;Zhou & Xu, 2022), dynamic DEA (Chen, Kou, & Fu, 2018;Jiang, Ji, Shi, Ye, & Jin, 2021), super DEA (Chen, Liu, Gong, & Xie, 2021;Zhu et al, 2021), inverse DEA with frontier changes (Chen et al, 2021;Kutty, Kucukvar, Abdella, Meb, & Nco, 2022), parallel DEA (Xiong, Yang, Zhou, & Wang, 2022), Zero-Sum Gains DEA (Bouzidis & Karagiannis, 2022), DEA combined with the Malmquist-Luenberger Index (Zhang & Vigne, 2021), DEA with common weights (Arman, Jamshidi, & Hadi-Vencheh, 2021;Wang, Wu, & Chen, 2019), generalized DEA (Li, He, Shan, & Cai, 2019), and others. It is worth noting that, of all these methods, dynamic network DEA is the only one to consider the dynamic and network features of the innovation process simultaneously (Tone & Tsutsui, 2014).…”