Dynamic Programming for Re-Mapping Noisy Fixations in Translation Tasks

Michael Carl

    Publikation: Bidrag til bog/antologi/rapportKonferenceabstrakt i proceedingsForskningpeer review

    Abstrakt

    Eyetrackers which allow for free head movement are in many cases imprecise to the extent that reading pattern become heavily distorted. As a result, a "naïve" gazeto-symbol mapping approach wrongly maps also the drifted center of the xation on the symbol directly below it. In this talk, I extend this "naïve" gaze-to-word mapping by introducing background knowledge about the gazing task. In a first step, the sequence of "naïve" gaze-to-symbol mappings is projected into a lattice of several possible gaze locations above and below the current fixation on the text. In a second step a dynamic programming algorithm applies a number of heuristics to nd the best path through the lattice, based on the likely distance in characters and in pixels between successive fixations, so as to smooth the gazing path according to observations reported in the established literature.
    I present several types of drifting problems and noise that we observe when using eyetrackers to record and analyse gazing behavior of translators. I describe the mapping algorithm and show how it rectifies and re-aligns the noisy gaze data to provide a more intelligible gaze path. I show examples of re-mapped fixations which better explain translator's activity than naïve gaze-to-symbol mapping.
    OriginalsprogEngelsk
    TitelBook of Abstracts : 17th European Conference on Eye Movemement, 11-16 August 2013, Lund, Sweden
    RedaktørerKenneth Holmqvist, Fiona Mulvey , Roger Johansson
    UdgivelsesstedLund
    ForlagLund University
    Publikationsdato13 aug. 2013
    Sider134
    StatusUdgivet - 13 aug. 2013
    Begivenhed17th European Conference on Eye Movements. 2013 - Lund University, Lund, Sverige
    Varighed: 11 aug. 201316 aug. 2013
    Konferencens nummer: 17
    http://ecem2013.eye-movements.org/

    Konference

    Konference17th European Conference on Eye Movements. 2013
    Nummer17
    LokationLund University
    LandSverige
    ByLund
    Periode11/08/201316/08/2013
    Internetadresse
    NavnJournal of Eye Movement Research
    Nummer3
    Vol/bind6
    ISSN1995-8692

    Citationsformater