Are crossing dependencies really scarce?
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10.1016/j.physa.2017.10.048
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/112359
Tipus de documentArticle
Data publicació2018-03-01
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
The syntactic structure of a sentence can be modelled as a tree, where vertices correspond to words and edges indicate syntactic dependencies. It has been claimed recurrently that the number of edge crossings in real sentences is small. However, a baseline or null hypothesis has been lacking. Here we quantify the amount of crossings of real sentences and compare it to the predictions of a series of baselines. We conclude that crossings are really scarce in real sentences. Their scarcity is unexpected by the hubiness of the trees. Indeed, real sentences are close to linear trees, where the potential number of crossings is maximized.
CitacióFerrer-i-Cancho, R., Gómez-Rodríguez, C., Esteban, J. L. Are crossing dependencies really scarce?. "Physica A: statistical mechanics and its applications", 1 Març 2018, vol. 493, p. 311-329.
ISSN0378-4371
Versió de l'editorhttp://www.sciencedirect.com/science/article/pii/S0378437117310580
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