Railway accident root cause identification system and identification method based on unstructured data

A technology of unstructured data and identification system, applied in the identification system and identification field of railway accident root cause based on unstructured data, can solve the problems that cannot be directly processed by computer, consumes a lot of money and time, and is difficult to develop. To achieve the effect of portability, easy implementation and good data visualization effect

Pending Publication Date: 2021-11-05
BEIJING JIAOTONG UNIV
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Problems solved by technology

Since the information of unstructured text data is more abstract than that of structured data, it cannot be directly processed by computers, so it is difficult to develop
Usually, the strategy of omitting, replacing or deleting is often adopted to deal with unstructured text data, which not only requires a lot of manual investment, but also consumes a lot of money and time, and is not efficient

Method used

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  • Railway accident root cause identification system and identification method based on unstructured data
  • Railway accident root cause identification system and identification method based on unstructured data
  • Railway accident root cause identification system and identification method based on unstructured data

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Embodiment Construction

[0070] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0071] Such as Figure 1-6 Shown, in the present invention, railway accident root cause identification system comprises: 4 levels, as figure 2 shown. The state monitoring layer (that is, the state monitoring subsystem) refers to: using various sensors installed in the lines, vehicles, and the environment to record the state information of the lines, vehicles, and the environment, and store them in memory to establish a database. The data processing and data calculation layer (that is, the data processing and calculation module) is completed by a high-performance data processor, which is a computing component in a computer system and a server. Because of identification. The decision support layer (that is, the decision support module) formulates management measures such as daily monitoring and maintenance of the railway s...

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Abstract

The invention belongs to the technical field of railway intelligent safety, and relates to a railway accident root cause identification system and method based on unstructured data, and the system comprises a state monitoring subsystem, a data storage module, a data processing calculation module, a decision support module and a man-machine interaction module. The method comprises the following steps: establishing a first part dictionary Dic1; establishing a sentence network; establishing a word net; calculating comprehensive characteristic values of the nodes to form a second part dictionary Dic2; collecting basic information of the train as a stop word table ST1; establishing a stop word list ST2 by using an Apriori algorithm; obtaining a dictionary ND = Dic1 + Dic2-ST; using a dictionary ND to match root cause nouns; and obtaining a railway accident root cause text. The method has the advantages that a network method is adopted, all unnecessary details are deleted, and the data visualization effect is good; the recognition system does not need specific language knowledge and has portability; and the method is easy to implement, low in cost and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of railway intelligent security, and relates to a method for identifying the root cause of an accident based on unstructured data in the process of monitoring and maintaining a railway system, in particular to a system for identifying the root cause of a railway accident based on unstructured data and recognition methods. Background technique [0002] Safety is always an important theme in the operation of the railway system; in the operation and management of the railway system, in order to ensure the safety of the operation, the staff need to investigate and analyze the historical accidents to provide scientific and reasonable daily monitoring, regular inspection and maintenance for the future railway system. basis; thus, a large amount of unstructured textual data has been accumulated. Because unstructured text data is more abstract than structured data, it cannot be directly processed by computers, so i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/36G06F40/242G06F40/289G06Q50/30
CPCG06F16/36G06F40/289G06F40/242G06Q50/30
Inventor 李克平杨柳刘岩岩
Owner BEIJING JIAOTONG UNIV
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