Interpolation method and device of missing data

A technology for missing data and processing methods, applied in complex mathematical operations and other directions, and can solve problems such as large errors

Inactive Publication Date: 2018-01-12
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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Problems solved by technology

[0003] Based on this, it is necessary to provide a data missing processing method and device for the problem that a single interpolation value replaces the missing data, which will cause a large error compared with the original data

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  • Interpolation method and device of missing data
  • Interpolation method and device of missing data
  • Interpolation method and device of missing data

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[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] see figure 1 , figure 1 It is a schematic flowchart of an imputation processing method for missing data in the present invention.

[0020] The interpolation processing method for missing data in this embodiment may include the following steps:

[0021] S11: Obtain the data set in the preset time zone, search for the missing data series in the preset time zone, and the time series corresponding to the missing data series;

[0022] S12: Construct a time series-based multiple imputation model according to the time series corresponding to the missing data series; the multiple imputation model...

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Abstract

The invention provides an interpolation method of missing data. The method includes the following steps that a dataset in the preset time region is acquired, and the missing data in the preset time region and the time corresponding to the missing data are searched for; based on the time corresponding to the missing data, a DA multiple interpolation model is built; based on the multiple interpolation model, a plurality of intermediate interpolation values of the time corresponding to the missing data are calculated; the interpolation value with the minimal prediction error is acquired from theintermediate interpolation values and used as a final interpolation value corresponding to the missing data; in the position of the time corresponding to the missing data, the missing data is replacedwith the final interpolation value. Interpolation is conducted on the missing data by means of the multiple interpolation model, the intermediate interpolation values are generated in the multiple interpolation process, the uncertainty of the missing data is reflected by means of the variability among the interpolation values, and the interpolation value replacing the missing data is the interpolation value with the minimal prediction error, so that the error is small compared with original data.

Description

technical field [0001] The invention relates to the technical field of missing data processing, in particular to a data missing processing method. Background technique [0002] At present, most of the imputation methods for missing data are single imputation such as regression imputation, cold card imputation, deductive imputation, hot card interpolation, and mean interpolation. Single imputation is simple and easy, and it is a traditional missing value imputation method, but single imputation regards missing data as definite values, coupled with the limitation of single imputation model, the obtained single imputation value replaces missing data , there will be a large error compared with the original data. Contents of the invention [0003] Based on this, it is necessary to provide a data missing processing method and device for the problem that a single interpolation value replaces the missing data, which will cause larger errors compared with the original data. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/18G06F17/16
Inventor 邓广昌谷海彤陈劭华杨悦辉李慧蔡妙妆彭正阳张捷崔卓吴晓强
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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