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Feature extraction is an essential preprocessing step in machine learning and data mining. Generally, supervised feature extraction algorithms with prior knowledge outperform unsupervised ones without prior knowledge. In particular, nearly all existing supervised feature extraction algorithms employ class labels or pairwise constraints as supervised information. In this paper, we propose to employ...
Multi-label learning is popular in current research of machine learning areas, and there have already been many methods using label relationship to solve multi-label problems. However, the meaning of their relationship is not so obvious that it's hard for us to know the fact among labels. Besides, with the development of multi-label learning, hierarchical multi-label classification is a new research...
Structural design patterns address concerns related to high-level structures for applications being developed. Accurately recovered instances of structural design patterns support development related tasks like program comprehension and reengineering. However, the detection of structural design pattern instances is not always a straightforward task. The lack of documentation, the ad-hoc nature of...
Compact, robust and meaningful representations of face images are crucial to the performance of any face recognition system. In this paper, we present a novel method for robust face representation based on Probability Latent Semantic Analysis (PLSA), a generative model originated from the field of text-processing. Specifically, each of face images is treated as a document consisted of a bag of visual...
A vertically folded dipole on a multi-layer circuit board is proposed. The two radiation arms are spread into two dielectric surfaces and connected through vias. It effectively reduces antenna area by half without decreasing the bandwidth. It also facilitates meandering the strip dipole and further reduces the antenna length. Examples are given to characterize the vertical two or three folded dipoles...
This paper discussed the Q factor comparison of several printed resonant monopole and dipole antennas at 2.4 GHz ISM band. It was found that the monopole length is not essential to the Q factor (or bandwidth) if the backside ground plane is design careful to contribute significant radiation. In contrast, for dipole antennas without ground backing, the smaller resonant antenna corresponds to larger...
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