Abstract: 【Purpose/significance】Under the background of the construction of double first-class disciplines,based on the subject clas‐
sification model and z-index evaluation model,this paper takes 25 first-level disciplinary institution in the field of library information
and archives management in China as examples to establish a method for identifying the superiority research direction of institution.
【Method/process】Keyword clustering was carried out by Word2vec model combined with K-means,and the subject of library informa‐tion and archives management was divided into 12 research topics. Secondly, based on the matching three-dimensional relationship
subject-institution-cited frequency,the 300 evaluation data sets of 25 disciplinary institution under 12 research topics were estab‐
lished.Finally,the zsi-index was used to identify the superiority research direction of institution【. Result/conclusion】The experimental
results show that the z-index achieves a good balance between the quantity,quality and citation distribution of papers published by var‐ious institutions.Secondly,the subject evaluation method based on fine-grained research topic has the advantages of classified evalua‐
tion and diversified evaluation.【Innovation/limitation】The evaluation model proposed in this paper can provide certain information
reference and decision support for different research groups,and at the same time.it also provides a relatively fair,personalized and di‐
versified evaluation perspective for the disciplinary evaluation of domestic universities.However,the evaluation model is susceptible to
the quality of subject classification.