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Harbusch, K., & Kempen, G. (2011). Automatic online writing support for L2 learners of German through output monitoring by a natural-language paraphrase generator. In M. Levy, F. Blin, C. Bradin Siskin, & O. Takeuchi (
Eds. ), WorldCALL: International perspectives on computer-assisted language learning (pp. 128-143). New York: Routledge.Abstract
Students who are learning to write in a foreign language, often want feedback on the grammatical quality of the sentences they produce. The usual NLP approach to this problem is based on parsing student-generated text. Here, we propose a generation-based ap- proach aiming at preventing errors ("scaffolding"). In our ICALL system, the student constructs sentences by composing syntactic trees out of lexically anchored "treelets" via a graphical drag & drop user interface. A natural-language generator computes all possible grammatically well-formed sentences entailed by the student-composed tree. It provides positive feedback if the student-composed tree belongs to the well-formed set, and negative feedback otherwise. If so requested by the student, it can substantiate the positive or negative feedback based on a comparison between the student-composed tree and its own trees (informative feedback on demand). In case of negative feedback, the system refuses to build the structure attempted by the student. Frequently occurring errors are handled in terms of "malrules." The system we describe is a prototype (implemented in JAVA and C++) which can be parameterized with respect to L1 and L2, the size of the lexicon, and the level of detail of the visually presented grammatical structures. -
Kempen, G. (1979). A study of syntactic bookkeeping during sentence production. In H. Ueckert, & D. Rhenius (
Eds. ), Komplexe menschliche Informationsverarbeitung (pp. 361-368). Bern: Hans Huber.Abstract
It is an important feature of the human sentence production system that semantic and syntactic processes may overlap in time and do not proceed strictly serially. That is, the process of building the syntactic form of an utterance does not always wait until the complete semantic content for that utterance has been decided upon. On the contrary, speakers will often start pronouncing the first words of a sentence while still working on further details of its semantic content. An important advantage is memory economy. Semantic and syntactic fragments do not have to occupy working memory until complete semantic and syntactic structures for an utterance have been computed. Instead, each semantic and syntactic fragment is processed as soon as possible and is kept in working memory for a minimum period of time. This raises the question of how the sentence production system can maintain syntactic coherence across syntactic fragments. Presumably there are processes of "syntactic bookkeeping" which (1) store in working memory those syntactic properties of a fragmentary sentence which are needed to eliminate ungrammatical continuations, and (2) check whether a prospective continuation is indeed compatible with the sentence constructed so far. In reaction time experiments where subjects described, under time pressure, simple static pictures of an action performed by an actor, the second aspect of syntactic bookkeeping could be demonstrated. This evidence is used for modelling bookkeeping processes as part of a computational sentence generator which aims at simulating the syntactic operations people carry out during spontaneous speech. -
Kempen, G. (1979). La mise en paroles, aspects psychologiques de l'expression orale. Études de Linguistique Appliquée, 33, 19-28.
Abstract
Remarques sur les facteurs intervenant dans le processus de formulation des énoncés. -
Kempen, G. (1979). Psychologie van de zinsbouw: Een Wundtiaanse inleiding. Nederlands Tijdschrift voor de Psychologie, 34, 533-551.
Abstract
The psychology of language as developed by Wilhelm Wundt in his fundamental work Die Sprache (1900) has a strongly mentalistic character. The dominating positions held by behaviorism in psychology and structuralism in linguistics have overruled Wundt’s language theory to the effect that it has remained relatively unknown. This situation has changed recently under the influence of transformational linguistics and cognitive psychology. The paper discusses how Wundt applied the basic psychological concepts of apperception and association to language behavior, in particular to the construction and production of sentences during unprepared speech. The final part of the paper is devoted to the work, published in 1917, of the Dutch linguistic scholar Jacques van Ginneken, who elaborated Wundt’s ideas towards an explanation of some syntactic phenomena during the language acquisition of children. -
Kempen, G. (1979). Woordwaarde. De Psycholoog, 14, 577.
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Levelt, W. J. M., & Kempen, G. (1979). Language. In J. A. Michon, E. G. J. Eijkman, & L. F. W. De Klerk (
Eds. ), Handbook of psychonomics (Vol. 2) (pp. 347-407). Amsterdam: North Holland. -
Thomassen, A. J., & Kempen, G. (1979). Memory. In J. A. Michon, E. Eijkman, & L. Klerk (
Eds. ), Handbook of psychonomics (pp. 75-137 ). Amsterdam: North-Holland Publishing Company.
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