Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/69418
Title: Modeling the structure of written text
Author: Serrano Moral, Ma. Ángeles (María Ángeles)
Flammini, Alessandro
Menczer, Filippo
Keywords: Comunicació escrita
Algorismes
Estadística
Written communication
Algorithms
Statistics
Issue Date: 29-Apr-2009
Publisher: Public Library of Science (PLoS)
Abstract: Written text is one of the fundamental manifestations of human language, and the study of its universal regularities can give clues about how our brains process information and how we, as a society, organize and share it. Among these regularities, only Zipf's law has been explored in depth. Other basic properties, such as the existence of bursts of rare words in specific documents, have only been studied independently of each other and mainly by descriptive models. As a consequence, there is a lack of understanding of linguistic processes as complex emergent phenomena. Beyond Zipf's law for word frequencies, here we focus on burstiness, Heaps' law describing the sublinear growth of vocabulary size with the length of a document, and the topicality of document collections, which encode correlations within and across documents absent in random null models. We introduce and validate a generative model that explains the simultaneous emergence of all these patterns from simple rules. As a result, we find a connection between the bursty nature of rare words and the topical organization of texts and identify dynamic word ranking and memory across documents as key mechanisms explaining the non trivial organization of written text. Our research can have broad implications and practical applications in computer science, cognitive science and linguistics.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1371/journal.pone.0005372
It is part of: PLoS One, 2009, vol. 4, p. e5372
Related resource: http://dx.doi.org/10.1371/journal.pone.0005372
URI: http://hdl.handle.net/2445/69418
ISSN: 1932-6203
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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