www-ai.cs.tu-dortmund.de/de/LEHRE/SEMINARE/SS09/AKTARBEITENDESDM/LITERATUR/ISWC-folksonomy.pdf
iswc-folksonomy.dvi
of vertices is partitioned into the three (possibly empty) disjoint sets A = {a1, . . . , ak}, C = {c1, . . . , cl}, I = {i1, . . . , im} corresponding the set of actors (users), the set of concepts (tags [...] from Web pages.
1 Introduction
According to the most cited definition of the Semantic Web literature, an ontol- ogy is an explicit specification of the conceptualization of a domain [1]. Guarino clarifies [...] this matrix as B = {bij}. As discussed before, bij = 1 if actor ai is affiliated with concept cj . We define a new matrix S = sij , where
sij = ∑k
x=1 bixbxj . In matrix notation S = BB′. This matrix, known …
