tailieunhanh - Lecture Notes in Computer Science- P19

Lecture Notes in Computer Science- P19:This year, we received about 170 submissions to ICWL 2008. There were a total of 52 full papers, representing an acceptance rate of about 30%, plus one invited paper accepted for inclusion in this LNCS proceedings. The authors of these accepted papers | 80 K. Xiao S. Chen and X. Chen When adding new KP to the syllabus the material reflecting this KP must be added into the courseware also. When the KP does not longer present in the syllabus any material reflecting this KP must be deleted in the courseware. Meanwhile the KP reflected in the remaining material must be enough for the students to learn the syllabus. In order to deal with these cases this paper discusses the relationships among KP and the relationships among material. On the basis of them it provides material Petri net MPN to validate some material property. It is organized as follows. Section 2 describes the KP net and clarifies the relationships among KP in the syllabus. Based on KP net Section 3 presents the material net. Section 4 introduces Petri net and gives the definition of MPN. Then it researchs some material property by the MPN. In the section 5 it draws a conclusion and presents the future work. 2 Knowledge Point Overview of KP The whole knowledge in a book consists of some KP and these KP distribute from the various charpters. It is essence that various material reflecting KP is learned in the elearning. In order to describe material we must give some related conception of KP firstly. Well-known the KP is an teaching unit including knowledge in the learning process. From the conception of KP we know that KP is demarcated according to requirement. It brings forth a question about how to divide knowledge into KP properly It is the basic principle of the knowledge demarcation that the partial completeness must be ensured 4 . For example one chapter in the book may be a large KP. The contents of chapter may be divided into some sections also. A section of in the chapter may be divided into some less KP again. However if KP is continuously divided it would not reflect concrete knowledge contents lastly. Hence we have two conceptions Atom KP if the knowledge of the KP is further splitted there would not exist any completeness knowledge .