Mapping knowledge construction technologies include top-down and bottom-up two kinds. Wherein the top-down means is constructed by means of other websites Encyclopedia structured data source, the number of high-quality
data extracting body and the mode information, added to the knowledge base. And constructed from the bottom up, it is with a certain technical means to extract resources from the data disclosed acquisition mode, select the information with a higher degree of confidence, added to the knowledge base.
Reprinted from: https://blog.csdn.net/sinat_26917383/article/details/66473253