Algoritmos de aprendizaje automático para clasificar zonas de inundación a partir de imágenes de radar de apertura sintética

Desarrollo de un corpus de entrenamiento para sistemas de Búsqueda de Respuestas basados en aprendizaje automático

This paper describes the development of an English corpus of factoid TREC-like question-answer pairs. The corpus obtained consists of a set of more than 70,000 samples, containing each one the following information: a question, its question type, an exact answer to that question, the different context levels (sentence, paragraph and document) where the answer occurs inside a document, and a lab...

Métodos de Aprendizaje Automático aplicados a la Predicción de Palabras para Portugués de Brasil

People with physical disabilities may have serious problems to use computer keyboards to write. For this reason, they may use specific tools that include systems to assist the writing process, such us word prediction, in order to reduce the number of keystrokes needed to write the text. Word prediction may be based on different sources of information: statistical, grammatical, specific of the s...

Algoritmos de análisis para gramáticas de inserción de árboles

Tree Insertion Grammar (TIG) is a compromise between Context Free Grammar (CFG) and Tree Adjoining Grammar (TAG) that can be parsed in O(n3)− time. In the literature, just two parsers for TIGs have been defined, based on the well-known CYK and Earley algorithms for CFGs. In this paper, we define four new parsers for TIGs: three parsers use a bottom-up strategy and the other one uses a predictiv...

Uso de tests de aptitud y algoritmos genéticos para la conformación de grupos en ambientes colaborativos de aprendizaje

Evaluación de algoritmos de aprendizaje supervisado para reconocimiento de las clases semánticas de colocaciones verbo-sustantivo en español

The meaning of such verb-noun collocations as the wind blows, time flies, the day passes by can be generalized as ‘what is designated by the noun exists’. Likewise, the meaning of make a decision, provide support, write a letter can be generalized as ‘make what is designated by the noun’. These generalizations represent the meaning of certain groups of collocations and may be used as semantic a...