1.Mechanisms of electroacupuncture analgesia and pain-reliever
Chinese Medical Equipment Journal 2003;0(10):-
Purpose:To summarize the base of electroacupuncture analgesia theory and the development of pain-reliever at present.Methods:By consulting a great deal of literatures,the mechanism of electroacupuncture analgesia is summarized from nerve,body fluid to molecule.The merits,kinds,using methods and notices of electroacupuncture are briefly introduced.Present research of Electroacuncture analgesia and its prospects based on traditional Chinese medical theory and modern science and technology are also summed up.Conclusion:This paper provides the basic theory for studying and developing the new style pain-relievers.
2.MicroRNA Target Prediction Based on Support Vector Machine Ensemble Classification Algorithm of Under-sampling Technique.
Journal of Biomedical Engineering 2016;33(1):72-77
Considering the low accuracy of prediction in the positive samples and poor overall classification effects caused by unbalanced sample data of MicroRNA (miRNA) target, we proposes a support vector machine (SVM)-integration of under-sampling and weight (IUSM) algorithm in this paper, an under-sampling based on the ensemble learning algorithm. The algorithm adopts SVM as learning algorithm and AdaBoost as integration framework, and embeds clustering-based under-sampling into the iterative process, aiming at reducing the degree of unbalanced distribution of positive and negative samples. Meanwhile, in the process of adaptive weight adjustment of the samples, the SVM-IUSM algorithm eliminates the abnormal ones in negative samples with robust sample weights smoothing mechanism so as to avoid over-learning. Finally, the prediction of miRNA target integrated classifier is achieved with the combination of multiple weak classifiers through the voting mechanism. The experiment revealed that the SVM-IUSW, compared with other algorithms on unbalanced dataset collection, could not only improve the accuracy of positive targets and the overall effect of classification, but also enhance the generalization ability of miRNA target classifier.
Algorithms
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MicroRNAs
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chemistry
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Support Vector Machine
3.Feature extraction for breast cancer data based on geometric algebra theory and feature selection using differential evolution.
Journal of Biomedical Engineering 2014;31(6):1218-1228
The feature extraction and feature selection are the important issues in pattern recognition. Based on the geometric algebra representation of vector, a new feature extraction method using blade coefficient of geometric algebra was proposed in this study. At the same time, an improved differential evolution (DE) feature selection method was proposed to solve the elevated high dimension issue. The simple linear discriminant analysis was used as the classifier. The result of the 10-fold cross-validation (10 CV) classification of public breast cancer biomedical dataset was more than 96% and proved superior to that of the original features and traditional feature extraction method.
Algorithms
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Artificial Intelligence
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Breast Neoplasms
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classification
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diagnosis
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Discriminant Analysis
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Female
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Humans
4.Research on the methods for inter-class distinctive feature selection for leucocyte recognition based on attribute hierarchical relationship.
Lianwang HAO ; Wenxue HONG ; Ting LI
Journal of Biomedical Engineering 2014;31(6):1202-1206
To increase efficiency of automated leucocyte pattern recognition using lower feature dimensions, a novel inter-class distinctive feature selection method for chromatic leucocyte images was proposed based on attribute hierarchical relationship. According to the attribute constraints in formal concept analysis, we established a knowledge representation and discovery method based on the hierarchical optimal diagram by defining attribute value and visual representation of optimized hierarchical relationship. It was applied to human peripheral blood leucocytes classification and 12 distinctive attributes were simplified from 60 inter-class attributes, which contributes significantly to reduced feature dimensions and efficient inter-class feature classification. Compared with the classical experimental data, the inter-class distinctive feature selection method based on hierarchical optimal diagram was proved to be usable and effective for six leucocyte pattern recognition.
Humans
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Leukocytes
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classification
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Pattern Recognition, Automated
5.Application of semi-supervised sparse representation classifier based on help training in EEG classification.
Min JIA ; Jinjia WANG ; Jing LI ; Wenxue HONG
Journal of Biomedical Engineering 2014;31(1):1-6
Electroencephalogram (EEG) classification for brain-computer interface (BCI) is a new way of realizing human-computer interreaction. In this paper the application of semi-supervised sparse representation classifier algorithms based on help training to EEG classification for BCI is reported. Firstly, the correlation information of the unlabeled data is obtained by sparse representation classifier and some data with high correlation selected. Secondly, the boundary information of the selected data is produced by discriminative classifier, which is the Fisher linear classifier. The final unlabeled data with high confidence are selected by a criterion containing the information of distance and direction. We applied this novel method to the three benchmark datasets, which were BCI I, BCI II_IV and USPS. The classification rate were 97%, 82% and 84.7%, respectively. Moreover the fastest arithmetic rate was just about 0. 2 s. The classification rate and efficiency results of the novel method are both better than those of S3VM and SVM, proving that the proposed method is effective.
Algorithms
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Brain-Computer Interfaces
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Electroencephalography
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classification
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Humans
6.Automatic Classification of Epileptic Electroencephalogram Signal Based on Improved Multivariate Multiscale Entropy.
Yonghong XU ; Jie CUI ; Wenxue HONG ; Huijuan LIANG
Journal of Biomedical Engineering 2015;32(2):256-262
Traditional sample entropy fails to quantify inherent long-range dependencies among real data. Multiscale sample entropy (MSE) can detect intrinsic correlations in data, but it is usually used in univariate data. To generalize this method for multichannel data, we introduced multivariate multiscale entropy into multiscale signals as a reflection of the nonlinear dynamic correlation. But traditional multivariate multiscale entropy has a large quantity of computation and costs a large period of time and space for more channel system, so that it can not reflect the correlation between variables timely and accurately. In this paper, therefore, an improved multivariate multiscale entropy embeds on all variables at the same time, instead of embedding on a single variable as in the traditional methods, to solve the memory overflow while the number of channels rise, and it is more suitable for the actual multivariate signal analysis. The method was tested in simulation data and Bonn epilepsy dataset. The simulation results showed that the proposed method had a good performance to distinguish correlation data. Bonn epilepsy dataset experiment also showed that the method had a better classification accuracy among the five data set, especially with an accuracy of 100% for data collection of Z and S.
Algorithms
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Electroencephalography
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Entropy
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Epilepsy
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diagnosis
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Humans
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Multivariate Analysis
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Nonlinear Dynamics
7.Feature Extraction of Chinese Materia Medica Fingerprint Based on Star Plot Representation of Multivariate Data
Jianxin CUI ; Wenxue HONG ; Rongjuan ZHOU ; Haibo GAO
Chinese Herbal Medicines 2011;03(2):140-143
Objective To study a novel feature extraction method of Chinese materia medica (CMM) fingerprint. Methods On the basis of the radar graphical presentation theory of multivariate, the radar map was used to figure the non-map parameters of the CMM fingerprint, then to extract the map features and to propose the feature fusion. Results Better performance was achieved when using this method to test data. Conclusion This shows that the feature extraction based on radar chart presentation can mine the valuable features that facilitate the identification of Chinese medicine.
8.Research and prospect on modern moxibustion instrument
Wenxue HONG ; Jianhong CAI ; Jun JING ; Chengwei LI
Chinese Medical Equipment Journal 1989;0(03):-
Based on the histories of moxibustion and moxibustion apparatus, this paper studies two basic patterns and the problem of categorizing about moxibustion instrument, and summarizes and experimentalizes its mechanism. Its developing way is brought up.
9.Construction and identification of human tissue kallikrein gene eukaryotic expressing vector.
Yong, DAI ; Wujian, PENG ; Tiyuan, LI ; Hong, DU ; Wenxue, SUN ; Deheng, CHEN ; Zhuojia, XU
Journal of Huazhong University of Science and Technology (Medical Sciences) 2007;27(2):164-6
To clone and sequence the human tissue kallikrein gene of Chinese, and to construct eukaryotic expression recombinant of KK, total RNA was extracted from human pancreas and human tissue kallikrein gene cDNA was amplified by PCR after reverse-transcription by using Oligo(dT) primer. The original kallikrein cDNA was recovered and filled with Klenow enzyme and inserted into KS plasmid. After restriction endonuclease digestion, KK cDNA was sequenced by ABI377 analyzer. Then the KK gene was amplified from pBluescript KSKK and inserted into pcDNA3. A sequence comparison showed that the cloned kallikrein gene was only one nucleotide different from that reported in the Genbank. The coding amino acid was Asp in the Genbank gene, while the coding amino acid of Chinese kallikrein gene was Asn. The KK cDNA fragment was inserted into the eukaryotic expression vector pcDNA3. The cloned kallikrein gene and the pcDNA3KK can be used for further study in gene therapy.. .
10.Pulmonary Fungal Infection in Mid-later Stage after Liver Transplantation
Hong CHEN ; Qing ZHANG ; Wenxue ZHANG ; Yan TIAN ; Fengling ZHAO ; Xu WANG
Chinese Journal of Nosocomiology 2009;0(16):-
-?-D-glucan test.CT finding indicated the pulmonary nodules or masses in 9 cases.Plaque and flocculation lesion found in 3 cases.Ten cases were treated,in which 8 cases were cured,1 case was improved,1 case was dead.The effective rate was 90%,the curative rate was 80%,and the mortality rate was 8.3%.The two cases without treatment were stable.CONCLUSIONS The leading etiologic species of pulmonary fungal infections in the mid-later stage after liver transplantation are Aspergillus and Cryptococcous.It is different between early stage and mid-later stage after liver transplantation on clinical feature,outcome and anti-fungal medicine tolerability.