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J wave classifying method based on support vector machine

A support vector machine and classification method technology, applied in the field of J-wave classification, can solve the problems of J-wave time-consuming, lack of accuracy, etc.

Inactive Publication Date: 2015-07-22
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0005] The present invention provides a J-wave classification method based on support vector machines in order to solve the problem that the existing method for distinguishing J-wave benign and malignant is not only time-consuming but also fails to achieve ideal accuracy

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  • J wave classifying method based on support vector machine
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  • J wave classifying method based on support vector machine

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Embodiment Construction

[0017] A kind of J wave classification method based on support vector machine, comprises the following steps:

[0018] Step 1: Obtain ECG signals containing benign J waves and malignant J waves from the patient's body surface, and at the same time obtain the patient's medical history to prepare for the following support vector machine SVM training;

[0019] The second step: use the non-negative matrix factorization algorithm to extract the J wave from the ECG signal. The mathematical model of the NMF algorithm is V=WH, where V is the observation signal, W is the mixing matrix, and H is the source signal. The constraints of the NMF algorithm The decomposed matrix elements are all non-negative. The present invention uses the NMF algorithm based on the divergence deviation to extract the J wave signal, but the coefficient matrix V of the ECG signal is usually composed of positive and negative elements, and all the negative elements in V are denoted by 0 Instead, reconstruct a new...

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Abstract

The invention relates to a J wave classifying method, in particular to a J wave classifying method based on a support vector machine. A blind source separating technology serves as a basis, the support vector machine serves as a main means, and automatic classification on benignant electrocardiosignal containing J waves and malignant electrocardiosignal containing J waves can be carried out. By the classification on the benignant electrocardiosignal containing the J waves and the malignant electrocardiosignal containing the J waves, high-risk patients whose electrocardiosignal contains abnormal J waves clinically can be recognized by doctors, the possibility of malignant premature bipolar syndrome, malignant arrhythmia and idiopathic ventricular fibrillation sudden death can be reduced, and a theory and practice basis is provided for accurate diagnosis on high-risk states of the J waves clinically. In the J wave classifying method based on the support vector machine, three subjects including medical science, blind source separation and machine learning are combined. The J wave classifying method based on the support vector machine belongs to frontier research hotspots in the domestic and foreign relevant field.

Description

technical field [0001] The invention relates to a J-wave classification method, in particular to a J-wave classification method based on a support vector machine. Background technique [0002] J wave, also known as Osborn wave, mainly manifests as an obvious baseline deviation phenomenon at the junction of QRS wave group and ST segment (J point) on the electrocardiogram, with a certain amplitude and time limit, and presents a special shape in the electrocardiogram waveform. J wave often appears in the process of the depolarization to repolarization transition of the ventricle. Due to its special location, it has been paid more and more attention in clinical practice. [0003] There are two ways to cause J-wave ECG variation, one is physiological ECG variation, the main manifestation is premature repolarization syndrome, and the other is pathological variation caused by hypothermia, hypercalcemia, traumatic brain injury, etc. , such as Brugada syndrome, sudden death syndrom...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06T7/00
Inventor 李灯熬刘学博赵菊敏吕竟昂
Owner TAIYUAN UNIV OF TECH
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