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For the purpose of discovering White Dwarf + Main Sequence (WDMS) from massive spectra, in this paper, an unsupervised learning algorithm for Nonlinear Dimensionality Reduction (NLDR) named Isometric Feature Mapping (Isomap) is discussed. The applicability of Isomap to Sloan Digital Sky Survey Data Release 10 (SDSS-DR10) is confirmed. Furthermore, Particle Swarm Optimization (PSO) is implemented to...
For the problem of action detection, most existing methods require that relevant portions of the action of interest in training videos have been manually annotated with bounding boxes. Some recent works tried to avoid tedious manual annotation , and proposed to automatically identify the relevant portions in training videos. However, these methods only concerned the identification in either spatial...
This paper discusses the use of Bag-of-Features and a local part model approach for bare hand dynamic hand gesture recognition from video. We used dense sampling to extract local 3D multiscale whole-part features. We adopted three dimensional histograms of a gradient orientation (3D HOG) descriptor to represent features. K-means++ method has applied to cluster the visual words. Dynamic hand gesture...
In this paper, we present a part model for human action recognition from video. We use 3D HOG descriptor and bag-of-feature to represent video. To overcome the unordered events of bag-of-feature approach, we propose a novel multiscale local part model to preserve temporal context. Our method builds upon several recent ideas including dense sampling, local spatial-temporal (ST) features, 3D HOG descriptor,...
Based on the chaos game representation of protein sequences, a new method to predict the subcellular location of apoptosis protein sequences was put forward. Using of Support Vector Machine,and tested on a known dataset which includes 317 apoptosis proteins, the higher predictive success rates were obtained. Our prediction results showed that the chaos game representation of protein sequences were...
This paper presents an accurate and flexible method for robust recognition and tracking of multiple objects in video sequence. We calculate color moments and wavelet moments for each detected object. Based on the extracted moment features, the SVM achieves optimal object recognition performance. The object recognition rate is above 98.53%. Since the tracking accuracy of feature matching method could...
Can sequence analysis tell us about the function of protein? A basic question in protein science is which kind of proteins extent thermostability. Chaos game representation (CGR) can investigate the patterns hiding in protein sequence, visually revealing previously unknown structure. In this paper, we convert every protein sequence into a 20-dimensional vector by CGR algorithm, and based on these...
Apoptosis proteins have a central role in the development and homeostasis of an organism. These proteins are very important for the understanding the mechanism of programmed cell death, and their function is related to their types. According to the classification scheme by G.P.Zhou (Zhou and Doctor,2003), the apoptosis proteins are categorized into the following four types: (1) Cytoplasmic protein;...
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