Seyyed Abbas Hosseini

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—This paper presents a structured dictionary-based model for hyperspectral data that incorporates both spectral and contextual characteristics of a spectral sample, with the goal of hyperspectral image classification. The idea is to partition the pixels of a hyperspectral image into a number of spatial neighborhoods called contextual groups and to model(More)
—In this paper, two new line-fed loaded planar antennas are proposed for ultra-wideband applications. The first antenna is a circular patch with a circular ring as a Defected Ground Structure (DGS). A 50 Ohm microstrip line passes through the antenna which is symmetrical between the feed and the load. The impedance bandwidth of the first antenna with S11 <(More)
Recently, there has been a burst in the number of research projects on human computation via crowdsourcing. Multiple-choice (or labeling) questions could be referred to as a common type of problem which is solved by this approach. As an application, crowd labeling is applied to find true labels for large machine learning datasets. Since crowds are not(More)
—This paper introduces a novel framework for mod-eling temporal events with complex longitudinal dependency that are generated by dependent sources. This framework takes advantage of multidimensional point processes for modeling time of events. The intensity function of the proposed process is a mixture of intensities, and its complexity grows with the(More)
BACKGROUND One of the essential components of learning and educational program is evaluation or examination. There are various methods for evaluating clinical skills among which objective structured clinical examination (OSCE) has been recognized as the most reliable method for evaluation of the clinical skills. METHODS This was a one-step single-group(More)
We study the conditions for soliton-like wave propagation in the Photore-fractive (PR) and electro-optic (i.e., Pockels) material, by using Nonlinear Schrodinger (NLS) equation. The complete NLS equation is solved analytically and numerically by transforming it into the phase space. Our results clearly show the existence of both the dark and bright solitary(More)
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