2026-10-13T03:39:36Z https://www.scidb.cn/oai

10.57760/sciencedb.j00133.00614 2025-12-22T00:06:41Z

2025-12-22 1985-2023 Annual patent applications in China doi:10.57760/sciencedb.j00133.00614 en China patent application data of 677 technical fields (represented by four-digit patent classification number) from 1985 to 2023, based on which anomaly detection is carried out in this paper, but the number of applications in some fields has been very small. If the detected abnormal field is the field where the number of applications itself is abnormal, the field will be excluded from the abnormal range, which is caused by the data itself. patent applications; china; anomaly detection 田雪灿 RESTRICTED dataset Science Data Bank