000061329 001__ 61329 000061329 005__ 20170519135025.0 000061329 0248_ $$2sideral$$a78759 000061329 037__ $$aART-2011-78759 000061329 041__ $$aeng 000061329 100__ $$0(orcid)0000-0001-9036-8463$$aBorge-Holthoefer, J. 000061329 245__ $$aNavigation and Cognition in Semantic Networks 000061329 260__ $$c2011 000061329 5060_ $$aAccess copy available to the general public$$fUnrestricted 000061329 5203_ $$aSemantic memory is the cognitive system devoted to storage and retrieval of conceptual knowledge. Empirical data indicate that semantic memory is organized in a network structure. Everyday experience shows that word search and retrieval processes emerge providing fluent and coherent speech, i.e. are efficient and robust. Nonetheless, links between pairs of words in semantic memory encode a rich variety of relationships, and not merely category membership. To extract this information, we schematize a process based on uncorrelated random walks from node to node, which converge to a feature vectors network. This mechanism forces the emergence of semantic similarity, which implicitly encloses category structure. Interestingly, the degradation of the original structure has a dramatic impact on the topology of semantic network, whereas the dynamics upon it evidence much higher resilience. We define this problem in the framework of percolation theory. 000061329 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000061329 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000061329 700__ $$aArenas, A. 000061329 773__ $$g1 (2011), 69-72$$pInt. j. complex syst. sci.$$tInternational Journal of Complex Systems in Science$$x2174-6036 000061329 85641 $$uhttp://deim.urv.cat/~alexandre.arenas/publicacions/pdf/ijcss_borge.pdf$$zTexto completo de la revista 000061329 8564_ $$s155513$$uhttps://zaguan.unizar.es/record/61329/files/texto_completo.pdf$$yVersión publicada 000061329 8564_ $$s67513$$uhttps://zaguan.unizar.es/record/61329/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000061329 909CO $$ooai:zaguan.unizar.es:61329$$particulos$$pdriver 000061329 951__ $$a2017-05-19-13:16:38 000061329 980__ $$aARTICLE