Thematic Progression and Textual Cohesion trough Graphs of Co-occurrences
Abstract
This paper studies the possibility of applying the theory of graphs or networks to the analysis of thematic progression and textual cohesion. To this end, six scientific divulgation texts are analyzed: three on the same subject, palm oil, another on olive oil and two control texts, one created by the union of two texts of different subjects and the other generated randomly by paragraphs on different subjects. An undirected and weighted graph of co-occurrences with a 5-gram window has been generated from each one. First, we have analyzed the global measures of the graph to know its topology; secondly, we use the degree of betweenness to know the topics of each text and we study how these evolve; thirdly, through the modularity of the graph, it has been analyzed in which paragraphs the different topics appear and how they have evolved.
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