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Entity resolution method suitable for big data environment and capable of achieving noise immunity

An entity analysis and anti-noise technology, which is applied in the field of entity analysis, can solve the problems of lower accuracy rate and recall rate of clustering results, achieve the effect of improving anti-noise ability, weakening the influence of data noise, and improving quality

Inactive Publication Date: 2014-04-30
北京交通大学长三角研究院
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Problems solved by technology

When calculating the cost, each node in the class will play a voting role, and the dispersion of voting rights will lead to a decrease in the accuracy and recall of the clustering results

Method used

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  • Entity resolution method suitable for big data environment and capable of achieving noise immunity
  • Entity resolution method suitable for big data environment and capable of achieving noise immunity
  • Entity resolution method suitable for big data environment and capable of achieving noise immunity

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Embodiment Construction

[0055] An entity resolution method suitable for big data environments with anti-noise ability. The method is improved on the basis of the traditional correlation clustering method. By introducing the concept of neighbor relationship and kernel, it is realized by a two-layer algorithm. The upper algorithm is based on the neighbor The relationship performs rough, overlapping pre-block processing on the data; the underlying algorithm accurately defines the degree of association between nodes and classes by introducing the concept of cores, so as to accurately determine the attribution of nodes and improve correlation clustering The accuracy, wherein, the method specifically includes the following steps:

[0056] (1) For unclassified records, first use a rough similarity function to calculate the similarity between each node pair, and choose Jaccard similarity. For two sets S and T, Jaccard is defined as shown in formula 1:

[0057] Jaccard ( ...

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Abstract

The invention discloses an entity resolution method suitable for a big data environment and capable of achieving noise immunity. According to the entity resolution method, an improvement is conducted based on a traditional relevancy clustering method, the neighborhood and the core concept are introduced, and the entity resolution method is achieved through two layers of algorithms. The upper-layer algorithm is used for conducting rough pre-partitioning allowing overlapping on data based on the neighborhood. The lower-layer algorithm is used for precisely defining the relevancy degree between a node and a class through introduction of the core concept so that the belonging of the node can be accurately judged, and therefore the accuracy of relevancy clustering is improved.

Description

technical field [0001] The invention belongs to the field of data integration systems, and in particular relates to an entity analysis method suitable for a big data environment and having anti-noise capability. Background technique [0002] With the development of information technology, the ways of data acquisition are diversified, and the problem of data quality has become the biggest challenge people face. How to quickly and efficiently obtain useful information from massive data has become the focus of people's research. Data integration can not only enrich the content of a single data, but also improve the accuracy of the data. Entity resolution is an important step in data integration, and its task is to find records from different data sources that refer to the same entity in the real world. Existing entity resolution algorithms are usually based on feature matching, which not only requires a large computational overhead, but also heavily relies on the existence of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/35
Inventor 王宁李杰
Owner 北京交通大学长三角研究院
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