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Multi-timing sequence inquiry method based on dominance of multi-timing sequence factor and sequence factor

A technology of time series and query methods, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as misunderstanding and missing solutions of query results, avoid additional costs, improve query efficiency, and speed up query Effect

Active Publication Date: 2013-05-01
TSINGHUA UNIV
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AI Technical Summary

Problems solved by technology

Manual observation of wave selection depends on human subjective knowledge and wave selection experience, and is only suitable for wave selection on a small number of seismic waves; Top-k query is performed on seismic wave eigenvalues, but eigenvalues ​​are limited by experience and models. Therefore, there will be many misunderstandings and omissions in the query results.

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  • Multi-timing sequence inquiry method based on dominance of multi-timing sequence factor and sequence factor

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Embodiment Construction

[0018] The method of the present invention assumes the comparison between the values, and it is better to take the larger one.

[0019] The multi-time series processing method based on multi-sequence factors and sequence factors that the present invention proposes comprises the following steps:

[0020] (1) Define the sequence factor dominance relationship between two single time series:

[0021] Assuming that each value in a single time series corresponds to a time stamp, a single time series TS is a sequence arranged in order of time stamps, that is, a single time series TS=[v 1 , v 2 ,...,v n ], there are |TS|=n time stamps in a single time series, and t 1 2 n , use TS[t] to represent the value of TS at time stamp t, set a sequence factor k, 0 |T|≥k|w|, and satisfy condition (1) TS[t]≥TS'[t] and (2) TS[t]>TS’[t], then the single time series TS on w is dominated by the sequence factor of the single time series TS’, denoted as where w is a single time series time win...

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Abstract

The invention relates to a multi-timing sequence inquiry method based on dominance of multi-timing sequence factors and sequence factors, which belongs to the technical field of computer data processing. The method comprises the following steps of: firstly, defining a dominance relationship of the sequence factors between two single timing sequences and a dominance relationship of the multi-timing sequence factors and the sequence factors between two multi-timing sequences; secondly, computing numerical values of the multi-timing sequences and a numerical value of each single timing sequence forming the multi-timing sequences; and finally, outputting a inquiry result according to the output value and the dominance relationship of each multi-timing sequence. According to the method provided by the invention, inquiry can be carried out on the multi-timing sequences without using characteristic values extracted through the multi-timing sequence, so that the effect of inquiring the multi-timing sequence directly is better than inquiring the characteristic values; raw data is directly used, so that the extra cost caused by extracting the characteristic values and other processes is avoided; and the inquiry efficiency is improved through limiting time windows and computing a maximum output value and a minimum output value of each multi-timing sequence, so that the inquiry speed is greatly accelerated.

Description

technical field [0001] The invention relates to a multi-time series query method based on multi-sequence factors and sequence factors, and belongs to the technical field of computer data processing. Background technique [0002] Time series is a type of data that is widely used in real life, and has a wide range of applications in both nature and human society, such as seismic wave sampling. Time series can be divided into multiple time series and single time series. A single time series only describes the object from one angle, while a multi-time series describes the object itself from multiple angles, and its data information will be much richer than that of a single time series. [0003] In some fields, although the multi-time series query method based on multi-time series factors and sequence factors is not used at present, they are also suitable for this method, and the effect will be better. Taking the most unfavorable seismic wave selection in the civil engineering ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30
Inventor 王朝坤潘鹏徐亚军施炜
Owner TSINGHUA UNIV