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Application to Subway Construction Accident Cases Based on CBR-RBR

Author: LiuBo
Tutor: ZhongJingBing
School: Huazhong University of Science and Technology
Course: Architecture and Civil Engineering
Keywords: Subway construction Accident Case-based reasoning Knowledge representation Retrieval Hybrid mode
CLC: U215.8
Type: Master's thesis
Year: 2011
Downloads: 34
Quote: 0
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Abstract


Subway construction is a high risk of the construction works due to its complexity and unpredictability. Meanwhile, because subway construction accident cases had been scattered around, we cannot neither arrange them systematically nor utilize them effectively. The paper presents case-based (CBR) and rule-based (RBR) mixed-mode to design structural model of accident cases, which implements the reference function of risk analysis, predict danger, emergency rescue to reduce the recurrence of similar accident cases.This article collects 71 subway project construction safety incident cases to analyze the expression form, the content characteristic and the statistical rule. Then, the possibility of reusing the old cases that is also the basis for further study of CBR has been demonstrated by the similarity of characteristic,the validity and operability of case library. CBR key technologies include knowledge representation and retrieval. This article presents the frame knowledge representation by summarized multi-level attributes, like proposed to identify attributes, classified attributes, engineering characteristics attributes, process attributes, cause attributes, consequences attributes and treatment measures as the basic attributes. The combinational retrieval proposed is hierarchical search algorithm and the nearest neighbor algorithm, which improves solution efficiency as well as the representation.In the light of limitations of CBR alone, the CBR system has integrated RBR which can formulate the case retrieval strategy, at the same time, the RBR controller may transfer the inference rule nimbly. The entire process may solve the shortcomings like omitting optimal solution, increasing similarity computation work, bad solution serviceability and enhance the system’s capability of self-learning.A lot of effort needs to be done to truly achieve CBR-RBR hybrid system application, but this is only preliminary research in this area. How to create a perfect case accumulation and sharing mechanism is the most basic part of the system function. Furthermore,to add near-miss events into the case base is also a good way to make it a risk trillion important part of accident prevention.

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CLC: > Transportation > Rail transport > Railway Line Project > Line construction > Construction safety and protection
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