Browsing by Subject "Short term memory"

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    Effect of speech intelligibility on visual short-term memory performance
    (2007) Kitapci, K.; Yılmazer, Semiha; Erkip F.
    The aim of this study is to find out effects of speech intelligibility on visual short-term memory performance by testing 34 interior architecture students in three different sound environments. Those sound environments were composed of real office sounds and a speech sample that are mixed to achieve varying STI levels of 'continuous noise', 'masked speech' and 'speech' sound environments [2]. Test procedure had three steps: first questionnaire, computer based short-term memory test and second questionnaire. Results show that there is no significant difference of visual short-term memory performance between varying sound environments, however subjective results derived from questionnaires show that students were distracted most by 'speech' sound environment.
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    ItemOpen Access
    Neural networks based online learning
    (IEEE, 2017) Ergen, Tolga; Kozat, Süleyman Serdar
    In this paper, we investigate online nonlinear regression and introduce novel algorithms based on the long short term memory (LSTM) networks. We first put the underlying architecture in a nonlinear state space form and introduce highly efficient particle filtering (PF) based updates, as well as, extended Kalman filter (EKF) based updates. Our PF based training method guarantees convergence to the optimal parameter estimation under certain assumptions. We achieve this performance with a computational complexity in the order of the first order gradient based methods by controlling the number of particles. The experimental results illustrate significant performance improvements achieved by the introduced algorithms with respect to the conventional methods.