Page 219 - JOURNAL OF LIBRARY SCIENCE IN CHINA 2018 Vol. 42

218 Journal of Library Science in China, Vol. 8, 2016

dimensions,such as concept specificity,conceptual semantic fuzziness,semantic relationship
structure,subject background. In view of these,the principles of solving these problems are put
forward,and the decision rules of mapping integrity are also presented.
Semantic mapping of different thesaurus has many advantages including not only of great help
to the compatibility and semantic specification,and improving the quality of the National Thesauri
Warehouse,but also enriching and supplementing the semantic relation of Chinese Thesaurus,and
promoting the integrated application of Chinese thesaurus. The analysis of the logical problems
of semantic mapping and its influencing factors may have a reference value to the actual mapping
work can be provided. The weakness of this paper lies in the limited experimental data,where
there may be some logical problems that have not been completely found.

Knowledge diffusion mechanism of scientific cooperation network
①a *
BA Zhichao ,LI Gang & ZHU Shiwei
The study on the mechanism of knowledge diffusion is playing an increasingly important
role in communication and cooperation. Many efforts contribute noticeably to improving the
understanding of knowledge diffusion in all sorts of networks. Researchers have concluded some
key elements that affect knowledge diffusion,such as the absorptive capacity of receivers,the
stickiness of knowledge and network topology structure for knowledge diffusion. Successful
knowledge diffusion is difficult to achieve and some important features of real scientific
collaboration network are unsuccessfully explained by simple model networks. Complex
networks,which can well mimic the interactions between individuals in real systems,provide a
substrate for the researchers to study many interesting dynamical processes.
Taking scale-free small-world network as basic model,this study presents a knowledge diffusion
model by considering the differences of self-knowledge growth and knowledge absorption
capacityβi,where βi is correlated with the knowledge stock of receivers,the knowledge spillover
effects and the correlation intensity of both. Scientific research collaboration is a process of
absorbing each other’s knowledge and co-creating new knowledge,when knowledge overflow
from the high knowledge level to the low,existing genetic inheritance of its original knowledge
manifested as restorative combination of constitution elements and fixed structure,and abrupt
variation of node represented as a critical behavior of thinking subjective initiative so as to
realize the innovative elements reorganization or restructuring. Accordingly,applying the average
knowledge levelμ(t),the knowledge diffusion rateυ(t),the knowledge balance degree σ(t)
and knowledge transient incrementρ(t) to measure the growth and diffusion of knowledge and
combining with the sticky phenomenon of knowledge,we study numerically the dynamic relation

* Correspondence should be addressed to BA Zhichao, Email: bazhichaoty@126.com, ORCID:0000-0001-5626-5604