Methods for fusing uncertain results obtained from different models in accident reconstruction |
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| Authors: | Tiefang Zou Fenglin He |
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| Institution: | aSchool of Automobile and Mechanical Engineering, Changsha University of Science and Technology, Changsha, China;bKey Laboratory of Safety Design and Reliability Technology for Engineering Vehicle, Changsha University of Science and Technology, Changsha, China |
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| Abstract: | Considering that almost all existing solutions of fusing different reconstructed results require experts’ opinions and the issue of how to fuse probabilistic results and mixed results has not been discussed. Two solutions are proposed. The first is based on the Monte Carlo Method (FMCM), while the second is based on the Sub-Interval Technique (FSIT). The method based on FMCM generates sample points according to the distribution of each uncertain result firstly, and then gives out the cumulative distribution function of the final fused result by statistical analysis. The method based on FSIT gets the result fusion interval set according to lower and upper bounds of all interval results and a given length d of each sub-interval firstly, and then calculate the weighted matrix of the result fusion interval. As a result, the cumulative distribution function of the final fused result can also be given out by statistical analysis. Finally, three real accidents are given to demonstrate the methods of FMCM and FSIT, the results of which show that both work well in practice. |
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| Keywords: | Forensic sciences accident reconstruction different uncertain results Monte Carlo Method Sub-Interval Technique fusing |
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