The network of concepts in written texts

Complex network theory is used to investigate the structure of meaningful concepts in written texts of individual authors. Networks have been constructed after a two phase filtering, where words with less meaning contents are eliminated and all remaining words are set to their canonical form, withou...

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Bibliographic Details
Published in:The European physical journal. B, Condensed matter physics Condensed matter physics, 2006-02, Vol.49 (4), p.523-529
Main Authors: CALDEIRA, S. M. G, LOBAO, T. C. Petit, ANDRADE, R. F. S, NEME, A, MIRANDA, J. G. V
Format: Article
Language:English
Subjects:
Applied sciences
Artificial intelligence
Canonical forms
Computer Science
Computer science
control theory
systems
Document and Text Processing
Exact sciences and technology
Humanities and Social Sciences
Linguistics
Networks
Speech and sound recognition and synthesis. Linguistics
Texts
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Summary:Complex network theory is used to investigate the structure of meaningful concepts in written texts of individual authors. Networks have been constructed after a two phase filtering, where words with less meaning contents are eliminated and all remaining words are set to their canonical form, without any number, gender or time flexion. Each sentence in the text is added to the network as a clique. A large number of written texts have been scrutinised, and it is found that texts have small-world as well as scale-free structures. The growth process of these networks has also been investigated, and a universal evolution of network quantifiers have been found among the set of texts written by distinct authors. Further analyses, based on shuffling procedures taken either on the texts or on the constructed networks, provide hints on the role played by the word frequency and sentence length distributions to the network structure.
ISSN:1434-6028
1434-6036
DOI:10.1140/epjb/e2006-00091-3