The Establishment Of The Metadata System In The Construction Surety Bond Market

Construction surety bond is the foundation of the construction market.It has experienced a continual development since the beginning of 21 st century.Meanwhile,the information revolution has widely spread among different walks of life.Nowadays,the booming big data technology has accelerated this process.Establishment of a metadata system based on domain knowledge is a foundation to build a big data platform in one field.To boost the informatization and serve for the establishment of a big data platform in the construction surety bond market in China,it is built a metadata system through the sorting of domain knowledge and the analysis of industry data.First,it is established a semantic web for each to present the relationship of the core concepts from three perspectives: subject,service,and governance.With the analysis for each semantic web,it is obtained the ontology of the construction surety bond market.Using the ontology builds the three-dimensional description model for the market,which sets up a framework for the later study.Second,it is accomplished the data recognition of the market subject information by the survey of related industry practice.With the help of the three-dimensional description model to get all kinds of market behaviors,it is made the workflows for the market service.Based on the analysis of the workflows,it is finished the data recognition of the market serviceinformation.According to the semantic web of the market governance concepts,it is fulfilled the data recognition of the market governanceinformation.Third,it is set up a framework of the metadata system under the research of the general and specific metadata standards.It is established a prototype of the metadata system in the construction surety bond market from two aspects: compatible to current standards and adapt to market features.Finally,with the combination of workshop and questionnaire survey towards experts,it is evaluated the prototype of the metadata system to check its effectiveness.Faced with the lack of data definition and standards in the construction surety bond market,it is established the metadata system from the aspect of domain knowledge,which supports the construction of the information platform and the data standardizationin the market.The study results have a practical use for the construction of knowledge base,theoretical analysis framework and database in the field of the construction surety bond industry.