Abstract
With the arrival of the 5G era, the traditional archival service mode has changed. As an important support for schools to carry out education and teaching work, it is indeed necessary to promote the teaching archives of colleges and universities from information service to knowledge service. This paper firstly explains the current situation of the development of knowledge services for university teaching archives and defines the basic concept of user portraits. Then constructs a teaching archives user portrait set through K-means clustering algorithm, and builds a teaching archives knowledge service model on this basis, aiming at providing better service for the users of teaching archives and improving the awareness of related groups to the teaching archives in colleges and universities.
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