13 research outputs found
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Inferring Document Readability by Integrating Eye Movement Features
Capturing userâs emotional state is an emerging way for implicit relevance feedback in information retrieval (IR). Recently, EEG-based emotion recognition has drawn increasing attention. However, a key challenge is effective learning of useful features from EEG signals. In this paper, we present our on-going work on using Deep Belief Network (DBN) to automatically extract high-level features from raw EEG signals. Our preliminary experiment on the DEAP dataset shows that the learned features perform comparably to the use of manually generated features for emotion recognition
Detecting regions of interest using eye tracking for CBIR
Identifying Regions of Interest (ROIs) in images has been shown an effective way to enhance the performance of Content Based Image Retrieval (CBIR). Most existing ROI identification methods are based on salience detection, and the identified ROIs may not be the regions that users are really interested in. While manual selection of ROIs can directly reflect usersâ interests, it puts extra cognitive overhead to users. To alleviate these limitations, in this paper, we propose a novel eye-tracking based method to detect ROIs for CBIR, in an unobtrusive way. Experimental results have demonstrated that our model performed effectively compared with various state of the art methods
Uni-traveling-carrier photodetector with high-contrast grating focusing-reflection mirrors
A novel uni-traveling-carrier photodetector (UTC-PD) structure with an
integrated focusing-reflection (FR) mirror realized by a non-periodic
concentric circular high-contrast grating (NP-CC-HCG), referred to as
FR-UTC-PD, is proposed to enhance responsivity in conventional UTC-PDs. The
FR-UTC-PD allows improving the responsivity by 36.5% at a 1.55-um wavelength as
compared to a UTC-PD without integrated an FR mirror with 84.59% reflectivity.
For 40-um-diameter PDs, the obtained 3-dB bandwidths are unaltered with values
of 18 GHz at -3.0 V bias voltage. The radio-frequency (RF) output power and
photocurrent are -1.77 dBm and 17.56 mA, respectively, at 10 GHz and the -6.0 V
bias voltage.Comment: 14 pages, 5 figure