Time sequence feature extraction method and system based on confidence interval
A confidence interval and feature extraction technology, applied in special data processing applications, digital data information retrieval, instruments, etc., can solve problems such as inability to accurately capture data, and achieve the effect of overcoming the effect of the number of segments
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Embodiment 1
[0038] Embodiment 1, this embodiment provides a time series feature extraction method based on a confidence interval;
[0039] Time series feature extraction methods based on confidence intervals, including:
[0040] S1: Determine the value range of the number of segments for historical time series data;
[0041] S2: Data segment segmentation step: determine the segment number K, and segment the historical time series data into K continuous non-overlapping data segments;
[0042] S3: Weight mean calculation step: calculate the intersection area of the parallelogram confidence space and the discrete signal convex hull of each data segment after segmentation, calculate the weight of the area of each intersection accounting for the area of the parallelogram, and the mean value of the weight;
[0043] S4: Add 1 to the value of the segment number K, repeat the data segment segmentation step and the weight mean value calculation step, and obtain the mean value of the weight u...
Embodiment 2
[0096] Embodiment 2, this embodiment provides a time series feature extraction system based on a confidence interval;
[0097] Time series feature extraction system based on confidence interval, including:
[0098] The segment number value range determination module is configured to: determine the value range of the segment number for historical time series data;
[0099] A data segment segmentation module configured to: determine the number of segments K, and divide the historical time series data into K continuous non-overlapping data segments;
[0100] The weight mean calculation module is configured to: calculate the area of the intersection of the confidence space of the parallelogram of each data segment and the convex hull of the discrete signal after the division, calculate the weight of the area of each intersection accounting for the area of the parallelogram, and the mean value of the weight;
[0101] The optimal segment number selection module is configured ...
Embodiment 3
[0104] The present disclosure also provides an electronic device, including a memory, a processor, and computer instructions stored in the memory and executed on the processor. When the computer instructions are executed by the processor, each operation in the method is completed. For brevity, I won't repeat them here.
[0105] Described electronic device can be mobile terminal and non-mobile terminal, and non-mobile terminal comprises desktop computer, and mobile terminal comprises smart phone (Smart Phone, such as Android mobile phone, IOS mobile phone etc.), smart glasses, smart watch, smart bracelet, tablet computer , laptops, personal digital assistants and other mobile Internet devices that can communicate wirelessly.
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