GD en GD (Gramática Digital en Geometría Descriptiva)

Complejidad descriptiva y computacional en máquinas de Turing pequeñas

Resumen En este trabajo ofrecemos algunos de los resultados obtenidos al estudiar las funciones calculadas por máquinas de Turing con un alfabeto de dos símbolos y un número de estados entre 1 y 3. Presentamos detenidamente el modelo de máquina de Turing empleado, donde la cinta es ilimitada en un solo sentido, y no existe estado de parada. Mostramos gráficamente cómo es posible representar la ...

Una gramática de dependencias basada en patrones de etiquetas

This paper describes a grammatical formalism, DepPattern, to write dependency grammars using Patterns of PoS tags augmented with lexical and morphological information. The formalism inherits ideas from Sinclair’s work and Pattern Grammar. In addition, a compiler was implemented so as to generate robust parsers from DepPattern grammars for 5 languages: Spanish, English, Galician, Portuguese, and...

Una gramática de estilos para resumir textos en español

This paper describes an experiment on text summarization. A summary is made by means of a logic program executed by a computer. The logic program is an embodiment of a symbolic technique for natural language processing based on “style grammars”. These grammars, in turn, are based on a proposal by J. Williams (1990). The program obtains topics (the themes of the sentence, according to Williams) ...

Self-patterning Gd nano-fibers in Mg-Gd alloys

Manipulating the shape and distribution of strengthening units, e.g. particles, fibers, and precipitates, in a bulk metal, has been a widely applied strategy of tailoring their mechanical properties. Here, we report self-assembled patterns of Gd nano-fibers in Mg-Gd alloys for the purpose of improving their strength and deformability. 1-nm Gd nano-fibers, with a 〈c〉-rod shape, are formed and he...

MRI Visualization of Melanoma Cells by Targeting Overexpressed Sialic Acid with a Gd(III)-DOTA-EN-Phenylboronate Imaging Reporter**