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Compression and the origins of Zipf's law for word frequencies
(2016-11-01)
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Article.
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Here we sketch a new derivation of Zipf's law for word frequencies based on optimal coding. The structure of the derivation is reminiscent of Mandelbrot's random typing model but it has multiple advantages over random ...
Positive isometric averaging operators on l2(Z,µ)
(2016-03-05)
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Article.
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© 2016 Springer International Publishing We show that positive isometric averaging operators on the sequence space (Formula presented.) are determined by very subtle arithmetic conditions on (Formula presented.) (even for ...
The infochemical core
(2016-06-07)
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Vocalizations, and less often gestures, have been the object of linguistic research for decades. However, the development of a general theory of communication with human language as a particular case requires a clear ...
On graph combinatorics to improve eigenvector-based measures of centrality in directed networks
(Elsevier, 2016-09-01)
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Article.
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We present a combinatorial study on the rearrangement of links in the structure of directed networks for the purpose of improving the valuation of a vertex or group of vertices as established by an eigenvector-based ...
Liberating language research from dogmas of the 20th century
(2016-02-25)
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A commentary on the article “Large-scale evidence of dependency length
minimization in 37 languages” by Futrell, Mahowald & Gibson (PNAS 2015 112 (33) 10336-10341).
Gelada vocal sequences follow Menzerath's linguistic law
(2016-03-04)
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Article.
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Identifying universal principles underpinning diverse natural systems is a key goal of the life sciences. A powerful approach in addressing this goal has been to test whether patterns consistent with linguistic laws are ...
The meaning-frequency law in Zipfian optimization models of communication
(2016-10-10)
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Article.
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According to Zipf’s meaning-frequency law, words that are more frequent tend to have more meanings. Here it is shown that a linear dependency between the frequency of a form and its number of meanings is found in a family ...
Crossings as a side effect of dependency lengths
(2016-11-01)
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Article.
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The syntactic structure of sentences exhibits a striking regularity: dependencies tend to not cross when drawn above the sentence. We investigate two competing explanations. The traditional hypothesis is that this trend ...
School research in Catalonia : between tradition and innovation
(2016-12)
Article.
Accés restringit per política de l'editorial
Article.
Accés restringit per política de l'editorial
The research-work (RW) is part of an official high school curriculum in Catalonia. The relevance of the proposal focuses on the fact that it complements the traditional tutoring project and is open to all educational levels ...
Rehabilitation profiles of older adult stroke survivors admitted to intermediate care units: A multi-centre study
(2016-11-09)
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Article.
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Background:
Stroke is a major cause of disability in older adults, but the evidence around post-acute treatment is limited and heterogeneous. We aimed to identify profiles of older adult stroke survivors admitted to ...