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Data missing repairing method and device

A data missing and database technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems that the seasonal performance of merchant sales cannot be reflected, the seasonal influence is large, and the repair method is too extensive.

Active Publication Date: 2016-11-23
ZHEJIANG TMALL TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Regardless of the above methods, the method of repairing missing data is too extensive and the accuracy is poor
Still taking the sales volume-time series of merchants as an example, product sales may be greatly affected by seasonality. For the above two methods, the seasonal performance of merchant sales is smoothed and cannot be reflected

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  • Data missing repairing method and device

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Embodiment Construction

[0053] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0054] figure 2 The main method flowchart provided for the embodiment of the present invention, such as figure 2 As shown in , the method mainly includes the following steps:

[0055] In 201, a sequence corresponding to the category of the sequence to be repaired is determined from the database as a candidate sequence.

[0056] Before performing this step, the sequence to be repaired in the database may be firstly identified, that is, the sequence with missing data is identified from the database. Usually, the operation of the database is realized by R language (R language is a language and operating environment for statistical analysis and drawing). In R language, NA is usually used to indicate that data is missing or does not exist, so the d...

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Abstract

The invention provides a data missing repairing method and a data missing repairing device. The data missing repairing method comprises the following steps: determining sequences corresponding to the type of a sequence to be repaired from a database as candidate sequences; selecting sequences from the candidate sequences as adjacent sequences of the sequence to be repaired, wherein degrees of mutual correlation between the sequences and the sequence to be repaired meet preset requirements; with a data value of a data integrity interval in the sequence to be repaired as a target and data values corresponding to the data integrity interval in the adjacent sequences as predictive factors, establishing a regression model; with data values corresponding to a data missing interval of the sequence to be repaired in the adjacent sequences as predictive factors, regressing the data value of the data missing interval of the sequence to be repaired by using the regression model. Through the data missing repairing method and the data missing repairing device, the data repairing accuracy can be improved.

Description

【Technical field】 [0001] The invention relates to the field of computer application technology, in particular to a method and device for repairing missing data. 【Background technique】 [0002] With the rapid development of computer technology, especially the arrival of the era of big data, data analysis has been widely used in quality management, product design, personalized service and other aspects and fields. Especially in the field of e-commerce, which is prone to generate big data and is gradually closely related to human life, the demand for data analysis is even stronger. However, the premise that data analysis can be implemented and has a certain accuracy is data integrity. When faced with the problem of missing data, it is necessary to repair the missing data. For example, if figure 1 Shown in is the sales volume-time series diagram of a certain merchant on the e-commerce platform. The horizontal axis in the figure represents time, and the vertical axis represents...

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Application Information

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IPC IPC(8): G06F17/30G06Q30/02
Inventor 王瑜赵诚成董婷闵万里卢辉李龙
Owner ZHEJIANG TMALL TECH CO LTD
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