摘要：

Abstract:

【Purpose/significance】 In order to analyze the internal mechanism of knowledge aggregation service in socialized ques⁃

tion-and-answer community, and provide theoretical basis and new perspective for the practice and innovative development of knowledge

service in socialized question-and-answer community.【Method/process】This study introduces the concept and method of knowledge aggre⁃

gation. Firstly, this paper demonstrates the impact of user needs on knowledge aggregation service in social question and answer community,

defines the concept, elements and objectives of knowledge aggregation service in socialized question-and-answer community, and then uses

the system dynamics method to analyze the motivation and process mechanism. Finally, it constructs the framework of knowledge aggregation

service system in socialized question-and-answer community driven by user needs.【Result/conclusion】Introducing the theory and method

of knowledge aggregation can effectively solve the problem of knowledge organization and management in the socialized question-and-an⁃

swer community. Social Q&A community knowledge aggregation service is mainly composed of knowledge service subject, service object,

service content, service environment, service technology and other elements. It is driven by user demand, interests of service subject and ser⁃

vice technology. Finally, the process model of knowledge service based on knowledge aggregation and the framework of knowledge aggrega⁃

tion service system driven by user needs are constructed.【Innovation/limitation】The innovation of this paper is to introduce the theory and

method of knowledge aggregation to solve the problem of knowledge organization and management in social Q & a community, and construct

the framework of knowledge aggregation service system in social Q & a community driven by user needs.