Research On Graph Storage Model Of Knowledge Element Link Based On Linked Data

With the rapid development of information technology and network technology,the demand for knowledge of users has taken place profoundly.From the perspective of users’cognition,obtaining the required information through the type of link is in accordance with the nature of the users who get information by association. So, knowledge service which takes knowledge element link as the core service gradually becomes an important mean of acquiring knowledge for users.Currently, knowledge element link storage exists in the form of relations-entity,which has many shortages.firstly,due to the special features of the E-R model,relation between the data in the table can be difficult to show up; secondly,the data and its operation is separation,and lack of data integrity because of E-R model only emphasizing the static organization;thirdly,E-R model cannot further constraints on various relations between the entities;finally,query language cannot effectively mine the semantic links between data.The above defects of E-R model will seriously affect the efficiency of data storage.In recent years,with the deeping and mature of linked data reserch,describing the knowledge element link by linked data technology can provide effective ways and methods for realizing machine-readable、linking more abundant knowledge element.This paper which combines with the four principles of linked data release,transfers the unstructured and heterogeneous knowledge meta object into the unified standard data,finallly, stores them into the gragh database in the form of the original knowledge link diagram.In this paper,the research of gragh storage of knowledge element link based on linked data can impove the storage mode of traditional knowledge element link, and can effectively achieve the gragh storage of knowledge element link in the environment of linked data.This thesis discusses the gragh storage model of knowledge element link in the perspective of linked data.Firstly, this thesis summarizes concepts and theories of knowledge element link, knowledge element extraction,gragh storage and linked data, and then discusses the structure analysis and determination of knowledge element, knowledge element extraciton methods,knowledge element indexing and the role of linked data in the gragh storage of knowledge element link.Secondly,puts forward gragh storage model of knowledge element link based on linked data in the base of analyzing the disadvantage of traditional storage mode of knowledge element link,and states the model in detail from the four aspects of the knowledge element extraction module,knowledge element link semantic description module,semantic knowledge element link storage module and the application module of knowledge element link gragh storage.Finally,takes the knowledge elements of the science and technology literature as the experimental data source,and tests the model by the experiment and demonstrates the feasibility of the model.