"directed, N-Dimensional, Concept Labels, Non-Empty Set,

this paper the authors see concept mapping is essentially a method to regulate the ratios between fragmentation/coherence and cognitiveoverhead /flexibility during the students' browsing in hyper-linked documents. They also propose that increasing the coherence criterion reduces the cognitive flexibility, while decreasing the cognitive overhead brings along a higher risk of fragmentation. with a dynamic browsing. Not constructivist. The paper is concerned with the dynamics of mapping in a hypermedia environment. The authors write of a complex series of experiments that tackle the cognitive processes operating on learners. They equate the mapping environment withWWW/ hypermedia. Their unique contribution concerns a rulebase