3) Semantic retrieval module (P3)
This module is in charge of the semantic retrieval of
information, which is the key module of ROSRS. From
forms submitted by the user, retrieval request is acquired.
Semantic extension algorithm is used to finish semantic
extension. By semantic matching based on Jena, semantic
retrieval is done, and then the result is sorted and returned
to the user.
Figure 4. Data flow diagram of ROSRS system