Development of prospective mathematics teachers’ professional noticing in a specific domain: proportional reasoning

The aim of this research is to identify aspects that support the development of prospective mathematics teachers’ professional noticing in a b-learning context. The study presented here investigates the extent to which prospective secondary mathematics teachers attend and interpret secondary school students’ proportional reasoning and decide how to respond. Results show that interactions in an on-line discussion improve prospective mathematics teachers’ ability to identify and interpret important aspects of secondary school students’ mathematical thinking.

Automatic prediction of emotions from text in Spanish for expressive speech synthesis in the chat domain

This paper describes a module for the prediction of emotions in text chats in Spanish, oriented to its use in specific-domain text-to-speech systems. A general overview of the system is given, and the results of some evaluations carried out with two corpora of real chat messages are described. These results seem to indicate that this system offers a performance similar to other systems described in the literature, for a more complex task than other systems (identification of emotions and emotional intensity in the chat domain).

El rol del conocimiento y de las habilidades intelectuales generales en la adquisición del aprendizaje complejo

El objetivo principal del presente trabajo es examinar la relación existente entre la habilidad intelectual y la habilidad de organización del conocimiento dentro de un modelo más general sobre los factores explicativos de la adquisición de conocimientos y habilidades. Se trata de comprobar si se produce un efecto compensatorio entre la habilidad intelectual general y la habilidad para organizar el conocimiento, así como establecer si el aprendizaje de los sujetos que obtienen un mayor conocimiento en un dominio particular viene predicho/explicado por las mismas variables que explican el aprendizaje de los sujetos que obtienen un menor conocimiento. Los resultados, en una muestra de estudiantes universitarios, indican que no se produce un efecto de interacción entre ambos factores, sino más bien un efecto aditivo. No obstante, sí se observa que el efecto de la inteligencia no es el mismo en los distintos niveles de conocimiento adquirido.

A comparative study of open domain and opinion question answering systems for factual and opinionated queries

The development of the Web 2.0 led to the birth of new textual genres such as blogs, reviews or forum entries. The increasing number of such texts and the highly diverse topics they discuss make blogs a rich source for analysis. This paper presents a comparative study on open domain and opinion QA systems. A collection of opinion and mixed fact-opinion questions in English is defined and two Question Answering systems are employed to retrieve the answers to these queries. The first one is generic, while the second is specific for emotions. We comparatively evaluate and analyze the systems’ results, concluding that opinion Question Answering requires the use of specific resources and methods.