Industrial data sample screening method based on complex network community discovery

A complex network and community discovery technology, applied in the field of industrial data sample screening based on complex network community discovery, to achieve the effect of strong typicality, low redundancy, and high prediction accuracy

CN104572985AInactive Publication Date: 2015-04-29DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-04-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

An industrial data sample screening method based on complex network community discovery comprises the steps of firstly using target data structure initial samples as complicated network nodes, calculating distances among the nodes, comparing the distances with interceptive threshold values to obtain an adjacent matrix representing node connecting relation, then using modularity maximization as an optimization objective, performing community discovery in the complicated network represented by the adjacent matrix, obtaining sample community division of corresponding problems under different situations, finally network node 'combination degree' evaluation indexes are provided, descending sorting is conducted on nodes in the network according to a combination degree value, a sample re-structure sample set is selected from each community according to a combination degree value average, and accordingly reduction of data sample sets is achieved under the situation that useful information in an original sample set is retained. Screened data samples are adopted to perform soft measurement, prediction and case-based reasoning, the accuracy of an established model can be further improved, and guarantee is provided for implementation of data-based optimized dispatching in the industrial process.
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Description

technical field

[0001] The invention belongs to the field of information technology, relates to theories such as data complex network construction, community discovery, hierarchical clustering, and community fusion, and is an industrial data sample screening method based on complex network community discovery. The present invention utilizes a large amount of historical data existing on the industrial site, first constructs initial samples of the target data to be screened as complex network nodes, calculates the distance between complex network nodes, and compares them with the truncation threshold to obtain an adjacency matrix representing the node connection relationship, and then uses The maximization of modularity is the optimization goal. Community discovery is carried out in the complex network represented by the adjacency matrix, and the sample community division in different situations corresponding to the problem is obtained. Finally, an evaluation index of "combinatio...

Examples

Embodiment Construction

[0016] In order to better understand the technical solution of the present invention, the present invention takes the screening of the sample set of the prediction model of the blast furnace gas tank in a metallurgical enterprise as an example, and describes the implementation of the present invention in detail in conjunction with the accompanying drawings. The actual production data of the blast furnace gas system in the energy center of a steel company was selected for the experiment. The data collection frequency was 1 minute. In order to make the information carried by the sample cover various production conditions of the blast furnace gas system, 7000 continuous samples were selected from the above raw data. The gas production and consumption flow and blast furnace gas cabinet data structure samples, the gas cabinet prediction model sample set can be expressed as:

[0017] S = { ( x ...