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Multilevel comprehensive evaluation model for triangular fuzzy analytic hierarchy process

A triangular fuzzy and comprehensive evaluation technology, applied in the field of ship safety assessment, can solve problems such as differences in concept understanding, scoring subjectivity affecting the scientificity of judgment matrix consistency weight vector, etc., to achieve the effect of ensuring safe operation

Pending Publication Date: 2021-10-15
武汉船舶职业技术学院
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Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-level comprehensive evaluation model of triangular fuzzy analytic hierarchy process, to solve the above-mentioned background technology when using analytic hierarchy process to determine the weight of each factor, experts have differences in understanding of concepts, and the scoring is relatively subjective Issues that affect the consistency of the judgment matrix and the scientific nature of the weight vector

Method used

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  • Multilevel comprehensive evaluation model for triangular fuzzy analytic hierarchy process
  • Multilevel comprehensive evaluation model for triangular fuzzy analytic hierarchy process
  • Multilevel comprehensive evaluation model for triangular fuzzy analytic hierarchy process

Examples

Experimental program
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Embodiment 1

[0072] Embodiment 1: Take the transport ship in the reservoir area of ​​the M River as an example:

[0073] Step 1: Construct a fuzzy judgment matrix. Take the three-level indicators of wind, rain, fog, and air temperature as examples, as shown in Table A below, and use the triangular fuzzy number algorithm to find their average value as a comprehensive fuzzy judgment matrix, as shown in Table B below. In the same way, the same method is used to construct the comprehensive fuzzy judgment matrix of the remaining indicators at all levels:

[0074]

[0075] Table A

[0076]

[0077] Form B

[0078] Step 2: Calculate the index weights of each layer, and use the three-level indicators wind, rain, fog, and temperature as examples to illustrate the method of calculating index weights.

[0079] Calculation index U 111 The triangular fuzzy number weight of

[0080]

[0081] In the same way, the index U can be calculated 112 ,U 113 ,U 114 The triangular fuzzy number ...

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Abstract

The invention discloses a multilevel comprehensive evaluation model for triangular fuzzy analytic hierarchy process. The multilevel comprehensive evaluation model comprises the following steps: S1, constructing a risk evaluation index system of a hierarchical structure; S2, determining a factor set and a weight set; S3, determining the index weight of each layer by using a triangular fuzzy analytic hierarchy process; and S4, establishing a bottommost index membership degree by using an expert consultation method, calculating each index membership degree of an upper layer by using a fuzzy operator, and sequentially and upwards transmitting until a final evaluation result of the evaluation target is obtained. The weight of each factor is determined by adopting the triangular fuzzy analytic hierarchy process, a multilevel comprehensive evaluation model based on the triangular fuzzy analytic hierarchy process is developed, a secondary index system is replaced by a three-stage index system, secondary comprehensive evaluation is changed into three-stage comprehensive evaluation, meanwhile, fuzziness of expert assignment is fully considered. And the index weight of each layer is determined by applying the triangular fuzzy number theorem, and the ship operation is subjected to safety risk assessment by the established three-level comprehensive evaluation model of the triangular fuzzy analytic hierarchy process.

Description

technical field [0001] The invention relates to a comprehensive evaluation model, in particular to a multi-level comprehensive evaluation model of triangular fuzzy hierarchical analysis, which belongs to the technical field of ship safety evaluation. Background technique [0002] At present, there are mainly gray system method, probability theory method, neural network method, analytic hierarchy process, fuzzy comprehensive evaluation method and fuzzy comprehensive evaluation method based on analytic hierarchy process for the safety assessment of transport ships. The advantages of the two have been widely used in the field of complex factor evaluation in recent years, and the effect is remarkable. However, when using the AHP to determine the weight of each factor, experts have different understandings of the concept, and the subjectivity of scoring affects the consistency of the judgment matrix. and the scientific nature of the weight vector. Contents of the invention [...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26G06Q50/30G06F30/15G06F30/20G06N7/02
CPCG06Q10/0635G06Q10/06393G06Q50/265G06F30/15G06F30/20G06N7/02G06Q50/40
Inventor 李军张辉
Owner 武汉船舶职业技术学院
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