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Exploring text-to-scene feedback as an alternativefor second language acquisition: Development of a text-to-scene program for the assimilation of spatial relations in anewly-acquired language
KTH, School of Computer Science and Communication (CSC).
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This thesis describes the implementation of a text-to-scene conversion system, which generates a three-dimensional graphic representation of a simple text description through syntactic and pragmatic reasoning. The program is a web-based game which allows second language learners to train their skills in Swedish through the description of 3D scenes. The scenes contain two objects with various color and size properties, and the students’ task is to describe the objects and the spatial relation between them. The program was tested in a user study with 12 participants, which aimed at exploring how two different types of feedback influence the users of a text-to-scene system in the context of computer-assisted second-language learning (CALL). The participants were divided into two groups: one group trained their Swedish skills on a version of the program that provided feedback in the form of an incrementally-changing 3D scene to signal mistakes in the description, whereas the other group’s version used a more traditional incrementally-changing colored-text feedback. The accuracy of the answers and the response times were measured to compare the two methods. The results show that both groups improved their description skills over time, that the students who trained with the pictorial feedback answered faster and that the textual feedback group described more scenes correctly. These contradictory results, combined with a low participation rate and high individual variation between the participants, made it difficult to draw any precise conclusion regarding differences between the two system versions.

Abstract [sv]

Denna examensarbetesrapport beskriver utvecklingen av ett text-till-scen- omvandlingsprogram, som genererar en tredimensionell, grafisk representation utifrån en textbeskrivning genom syntaktisk och pragmatisk analys. Programmet är ett webbaserat spel som är tänkt att användas av andraspråkinlärare för att träna sina färdigheter i svenska genom att beskriva 3D-scener. Scenerna innehåller två objekt med olika färg och storlek, och studenternas uppgift är att beskriva objekten och den spatiala relationen mellan dem. Programmet utvärderades i en användarstudie med 12 deltagare som syftade till att undersöka hur olika typer av feedback påverkar användarna av text-till-scenomvandlingssystemet i en andraspråksinlärningskontext. Deltagarna delades in i två grupper: en grupp tränade sin kunskap i svenska med en version av programmet som gav återkoppling i form av en stegvis förändrad 3D-scen för att markera fel i användarnas beskrivning, medan den andra gruppens version använde sig av en mer traditionell textbaserad återkoppling. Korrektheten på beskrivningarna och svarstiderna mättes för att utvärdera de två metoderna. Resultaten visar att båda grupperna blev bättre på att beskriva

scenerna över tid, men att gruppen med grafisk-feedback svarade snabbare medan gruppen med text-feedback gruppen beskrev fler scener korrekt. Dessa något motsägelsefulla resultat, kombinerade med ett lågt deltagande och stor individuell variation mellan deltagarna, gör det svårt att dra några precisa slutsatser angående skillnader mellan de två versionerna.

Place, publisher, year, edition, pages
2013.
National Category
Computer Science
Identifiers
URN: urn:nbn:se:kth:diva-142369OAI: oai:DiVA.org:kth-142369DiVA: diva2:699980
Educational program
Master of Science in Engineering - Computer Science and Technology
Supervisors
Examiners
Available from: 2014-03-12 Created: 2014-03-03 Last updated: 2014-03-12Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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More styles
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  • nn-NO
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  • sv-SE
  • Other locale
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