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The purpose of this paper is to provide a solution of extracting appropriate keywords to identify meaningful learning-contents on the Web. There are some issues in identifying documents that have learning content. Firstly, the documents need to be identified according to the learning area of a student's school year. Secondly, the documents need to be identified according to the learning area that...
In this paper, we explained the current matrix completion theory and proposed a new matrix completion framework called Feature Vector and Function Approximating Based Matrix Completion (FVFABMC) which extended low-rank matrix completion theory. The new matrix completion problem can be decomposed into two learning problems, feature vector learning problem and synthetic function learning problem based...
Cognitive diagnosis models (CDMs) are of growing interest in test development and in the measurement of human performance. The DINA (deterministic input, noisy, and gate) model has been widely used in cognitive diagnosis tests and in the process of test development. Central to many such models, the well-known Q-matrix [1], which specifies the item-attribute relationships and two noise parameters in...
In order to miniaturize irradiation accelerator, a new microwave-absorbing structure - collinear load, instead of traditional waveguide load, is adopted to absorb remnant microwave power. Collinear load depends on the film conglutinated on walls of accelerating cavities by flame spraying process and so on. To research on the properties of the alloy thermal-spraying coating, homogenization theory and...
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