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Quality assessment and quality restoration method for typhoon data

A repair method and quality assessment technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., to achieve the effect of reducing economic losses and casualties

Inactive Publication Date: 2018-11-16
SHANGHAI OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Quality assessment and quality restoration method for typhoon data
  • Quality assessment and quality restoration method for typhoon data
  • Quality assessment and quality restoration method for typhoon data

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Embodiment 1

[0058] The specific embodiments provided by the present invention will be described in detail below in conjunction with the accompanying drawings. In order to fully understand the technical solution of the present invention, the symbols and meanings involved in the technical solution of the present invention are described below:

[0059] 1 Symbols and Definitions

[0060] 1) t: time point of observation data, (t=1,2,...,n)

[0061] 2) j: the number of variables in the observed data, (j=1,...,m)

[0062] 3) MD: direction of movement

[0063] 4) MV: moving speed

[0064] 5) P: pressure

[0065] 6) Lo: longitude

[0066] 7) La: latitude

[0067] 8) G: Grade

[0068] 9) V: wind speed

[0069] 10) U: set of typhoon elements, U={F 1 , F 2 ,...,F m}

[0070] 11) μ: an abstract metric function

[0071] 12) L: Typhoon time series length

[0072] 13) Q AC : Integrity factor threshold

[0073] 14) Q AU : Consistency coefficient threshold

[0074] 15)V max : 1-minute av...

Embodiment 2

[0147] The present invention selects "201525" typhoon data as the reference typhoon data, and the number is 1; then selects "201526" typhoon data and "201527" typhoon data, and the numbers are respectively 2, 3, and the original data of No. 1 typhoon are as follows: figure 2 Shown:

[0148] According to the method proposed by the present invention, the restoration process is as follows (taking "No. 201525" typhoon as an example):

[0149]Through the query, the two elements that need to be repaired are the direction of movement and the speed of movement. The specific method is as follows:

[0150] (1) MOVE TO REPAIR. The direction of movement in the original typhoon data is recorded using the sixteen-wind direction map. In order to facilitate subsequent calculations, it needs to be expressed numerically. It is stipulated that north is 0, south is 8, and clockwise from north to south is 1-7; Counterclockwise from north to south is 9-15.

[0151] The angle is calculated acco...

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Abstract

The invention relates to a quality assessment and quality restoration method for typhoon data. The method comprises the following steps: step S1, obtaining original typhoon data; step S2, analyzing characteristics of the typhoon data and describing the typhoon data; step S3, assessing quality of the typhoon data, wherein the step S3 includes the step S31: assessing the integrity of the typhoon data; the step S32: assessing the consistency of the typhoon data; step S4: restoring the typhoon data according to the sequence of firstly restoring integrity and then consistency of the data, wherein the step S4 includes the step S41: restoring the integrity of the typhoon data; the step S42: restoring the consistency of the typhoon data. The quality assessment and restoration method for typhoon data has the following advantages: quality of the typhoon data with multiple essential factors can be judged and restored, which lays a foundation for similarity measurement of typhoon time; therefore,similar typhoons are more accurate to judge; the method helps make quick decisions for departments concerned in order to make precautions; and as a result, economy loss and deaths and injuries of people are reduced.

Description

technical field [0001] The invention relates to the technical field of typhoon data quality assessment and restoration with multiple elements, in particular to a typhoon data quality assessment and restoration method. Background technique [0002] With the continuous development of information technology and the explosive growth of data, the problem of data quality has attracted great attention. For social survey data, the literature (China Disabled Persons' Federation "Dynamic Update Third-Party Evaluation" research group. Research progress in social survey and data quality assessment [J]. Survey World, 2017 (10): 60-65) is sorted out according to the process of social survey survey and its data quality assessment; for periodic census data, the literature (Tao Ran. Periodic census data quality assessment methods and applicability research [J]. Statistical Research, 2014, 31(8):66-72) introduced its Assessment methods and their applicability; for Linked Data, the literature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 黄冬梅赵丹枫郑霞张烨宜刘新阳
Owner SHANGHAI OCEAN UNIV