Planificacion

Páginas: 10 (2425 palabras) Publicado: 22 de junio de 2012
Learning morphological phenomena
of modern Greek an exploratory approach
Y. Kotsanis, *A. Kokkinos Dimitrios, *A.G. Manousopoulou and *G. Papakonstantinou *National Technical University of Athens
This paper presents a computational model for the description of concatenative morphological phenomena of modern Greek (such as inflection, derivation and compounding) to allow learners, trainers anddevelopers to explore linguistic processes through their own constructions in an interactive open-ended multimedia environment. The proposed model introduces a new language metaphor, the 'puzzle-metaphor' (similar to the existing 'turtle-metaphor' for concepts from mathematics and physics), based on a visualized unification-like mechanism for pattern matching. The computational implementation ofthe model can be used for creating environments for learning through design and learning by teaching.

Introduction
Educational technology is influenced by and closely related to the fields of generative epistemology, Artificial Intelligence, and the learning sciences. Relevant research literature refers to the term constructionism (Papert, 1993) and exploratory learning (diSessa et al, 1995).Constructionism and exploratory learning are a synthesis of the constructivist theory of Piaget and the opportunities offered by technology to education on thinking concretely, on learning while constructing intelligible entities, and on interacting with multimedia objects, rather than the direct acquisition of knowledge and facts. These views are based on the approach that learners can takesubstantial control of their own learning in an appropriately designed physical and cultural environment (Harel, 1991). In parallel, most of the studies of the Vygotskian framework focus on the role of language in the learning procedure, considering conceptual thought to be impossible outside an articulated verbal thinking. Moreover, the specific use of words is considered to be the most relevant causefor childhood and adolescent differentiation (Vygotsky, 1962). These approaches offer important pedagogical ideas for the creation of powerful computational principles, such us procedures and interactive objects (Pea, 1992). They
29

V. Kotsanis et a\

Learning morphological phenomena of modem Greek an exploratory approach

can be used in a flexible, reusable and modular way, and areusually referred to as the LISP-derived Logo-like environments (Hoyles et al, 1992; Georgiadis et al, 1993; diSessa et al, 1995). Moreover, they concretize the argument about how different languages (spoken and programming) can influence cultures that grow up around them (Papert, 1980). Independent from educational technology, in the area of language technology naturallanguage processing systems haveattempted to encode linguistic information and to endow computers with human language capability. A unification-based grammar formalism has been widely used in a variety of these systems as a pattern-matching technique for different purposes. Definite-clause grammars from the logic programming field, generalized phrase-structure grammars and typed-feature structures from the computationallinguistics field are examples of formalisms based on unification (Shieber, 1986; Carpenter, 1992). Specific morphological processing systems are used in a fairly broad range of technological applications such as word processing, speech and language applications, and machine translation. These systems usually include a morphological processor that uses one or both of the following operations: • ananalyser, to recognize the combination of morphemes that form a word and/or the morphosyntactic features associated to the word; • a synthesizer, to generate a well-formed word from its morphemes and/or the morphosyntactic features. Many systems and applications which take this direction have been presented (Sproat, 1992), and specifically for the Greek language (Ralli, 1987; Kotsanis 1991; Markopoulos,...
Leer documento completo

Regístrate para leer el documento completo.

Estos documentos también te pueden resultar útiles

  • Planificacion
  • Planificacion
  • Planificacion
  • Planificación
  • Planificación
  • Planificacion
  • Planificacion
  • Planificacion

Conviértase en miembro formal de Buenas Tareas

INSCRÍBETE - ES GRATIS