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Time sequence physiological data classification method and device, storage medium and processor

A technology of physiological data and classification method, applied in the field of data processing, can solve the problems of difficult to describe the internal pattern of big data, poor performance, weak generalization ability, etc., to avoid expert bias and information loss, efficient calculation, and broad receptive field. effect of size

Active Publication Date: 2019-10-18
SOUTH CHINA NORMAL UNIVERSITY
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AI Technical Summary

Problems solved by technology

[0007] 3. Weak generalization ability
Such methods usually perform poorly on large data set tasks, because features such as manual feature engineering describe a part of the data distribution, and it is difficult to describe all the internal patterns in large data

Method used

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  • Time sequence physiological data classification method and device, storage medium and processor
  • Time sequence physiological data classification method and device, storage medium and processor
  • Time sequence physiological data classification method and device, storage medium and processor

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Experimental program
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Embodiment 1

[0057] Such as Figure 3-7 As shown, this embodiment provides a time-series physiological data classification method, which is based on deep learning and can realize end-to-end decision output, mainly including four stages of data preprocessing, model construction, offline training and online decision-making.

[0058] 1. Data preprocessing

[0059] see Figure 4 , before model training, multi-source sign data and corresponding annotations are extracted from the original medical database, and then data preprocessing is performed on the data. The first step of data preprocessing is data normalization. Since the time-series physiological data are collected from different organs and the collection equipment is different, the signal-to-noise ratio in the original data will be different. For example, the data collected by non-contact equipment will cause large fluctuations in the amplitude of the collected signals due to the difference in the patient's posture (sideways and uprigh...

Embodiment 2

[0081] Corresponding to the time-series physiological data classification method detailed in Embodiment 1, this embodiment provides a time-series physiological data classification device, including:

[0082] The original data acquisition and preprocessing module is used to extract multi-source sign data from the database, divide the data into training data and test data, and perform data preprocessing;

[0083] The model construction module is used to build the deep learning model DeepPhysioNet. The DeepPhysioNet model adopts the neural network architecture of the encoder-decoder. The head of the encoder is a basic feature learning unit composed of a convolutional neural network, and then connected by skipping words. Constitute a sequence residual unit to deepen the network and avoid the problem of gradient degradation in the network. Finally, the attention mechanism is introduced by the representation learning unit. The decoder automatically extracts powerful features from the...

Embodiment 3

[0096] This embodiment provides a storage medium on which a computer program is stored, and when the program is running, the time-series physiological data classification method described in Embodiment 1 is executed.

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Abstract

The invention discloses a time sequence physiological data classification method and device, a storage medium and a processor. The method comprises the following steps: extracting multisource sign data from a database, dividing the data into training data and test data, and preprocessing the training data and the test data; constructing a deep learning model DeepPhysioNet, wherein the model adoptsa coder-decoder neural network architecture, the coder is composed of a basic feature learning unit, a sequence residual error unit and a representation learning unit and can perform strong feature extraction, and the decoder calculates classification results for classification tasks of different targets by using extracted features; performing an offline training stage: inputting the training data into the model for preliminary training, testing the preliminarily trained model through the test data, and performing continuous repeating until a preset condition is met; performing the online inference stage: inputting to-be-detected data into the trained DeepPhysioNet model, and outputting a classification result. The method has the advantages that expert deviation is avoided, the method issuitable for multi-source time sequence physiological data, and an attention mechanism is introduced.

Description

technical field [0001] The present invention relates to the field of data processing, in particular to a time-series physiological data classification method, device, storage medium and processor based on deep learning. Background technique [0002] Although deep learning technology has been widely used in various smart medical scenarios, the mining of massive time-series physiological signal data based on the time dimension is still in its infancy. The main manifestations are the ultra-long time-series dependence of time-series physiological signs data, the inconsistency of data dimensions caused by differences in acquisition equipment, and the bottleneck of the general backbone network model. [0003] For the analysis of time-series physiological data analysis in disease prediction, the decision-making process of physicians is to circle the abnormal part from the given data, such as "suddenly dense ECG signals" in sleep apnea diseases. Most of the current research transfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16H50/70G06F16/35G06N3/04
CPCG16H50/70G06F16/35G06N3/045
Inventor 聂瑞华李铮席云
Owner SOUTH CHINA NORMAL UNIVERSITY
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