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Model correctness evaluation method based on goodness of fit

An evaluation method and a technology of goodness of fit, applied in the field of model correctness evaluation, which can solve the problems of numerous evaluation methods and difficulty in understanding.

Active Publication Date: 2014-10-01
XIDIAN UNIV
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  • Application Information

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Problems solved by technology

[0008] However, the existing methods for evaluating the correctness of models all use specific methods for specific models, and it is necessary to be clear about the complex working principles and internal working methods of the model. There are many evaluation methods and difficult to understand, and there is no unified method to satisfy Correctness Evaluation Method Applicable to Models under Certain Conditions

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  • Model correctness evaluation method based on goodness of fit
  • Model correctness evaluation method based on goodness of fit
  • Model correctness evaluation method based on goodness of fit

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Embodiment Construction

[0060] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0061] refer to figure 2 , the evaluation method of the present invention is suitable for models with known input and output parameters and measurable output parameters, and its principle is as follows:

[0062] The train of thought of the present invention is under the situation of the input of known model, calculates or simulates and obtains the theoretical calculation value of corresponding output parameter, and the actual test value of the output parameter corresponding to this model under the same input is measured experimentally, by calculating the output parameter The relative error between the theoretical calculation value and the actual test value, and the relative error is mapped to a certain score through a small Gaussian distribution function. The score reflects the degree of fit, that is, the degree of fit reflects the corre...

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Abstract

The invention discloses a model correctness evaluation method based on goodness of fit. The model correctness evaluation method is characterized by comprising the following steps of 1, establishing the hierarchical structure of a model, 2, calculating the individual goodness of fit of each parameter of a child node of the bottommost layer of the hierarchical structure, 3, calculating the weight of each parameter of each child node relative to the child node, 4, calculating the goodness of fit of each child node, 5, calculating the weight of each parameter of each child node relative to a target node, and 6, calculating the goodness of fit of the target node. The model correctness evaluation method based on goodness of fit is capable of evaluating the correctness degree of the model as long as the input and output parameters of the model are known and in case that the output parameters are measureable; the method does not need to find out complex principle and the inherent working mode of the model, and therefore, the method has remarkable advantages.

Description

technical field [0001] The invention relates to a method for evaluating model correctness, in particular to a method for evaluating model correctness based on matching degree, and belongs to the technical field of model evaluation methods. Background technique [0002] The correctness of the model directly affects the performance of related products, so it is of great significance to evaluate the correctness of the model. [0003] Take the skin antenna electromechanical coupling model as an example: [0004] The skin antenna refers to a highly integrated active array antenna that embeds the radio frequency functional parts of the integrated microstrip antenna array into the weapon platform structure and is manufactured by using advanced composite molding technology. It can be used as the mechanical bearing function of the weapon platform structure It can also be used as an electromagnetic functional part for sending and receiving wireless electromagnetic waves. [0005] Co...

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Application Information

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IPC IPC(8): G06F19/00
Inventor 陈光达杨冬娟周金柱孟娟李维超孟文辉李勋李明
Owner XIDIAN UNIV