Information Approach to Co-occurrence of Words in Written Language

In this paper we study the distribution of words across the different parts of a book using tools from information theory. In particular, the mutual information between words in the text and parts of the text is compared with the mutual information of a shuffled version of the book. This analysis allows us to extract not only relevant words of the text but also relationships between the different words, such as co-occurrence and repulsion between them. With the connections due to co-occurrence of words, we show how to construct a network that reflects the semantic organization of the book. This method can be applied to other types of sequences, measuring the relations between the different symbols that compose such sequences.Fil: Hernández Lahme, Damián Gabriel. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin