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Metrology support includes the management of measurement equipment and measurement process, which is an indispensable part of engineering construction. Aiming at the health status of instrumentation in use in enterprises metrological verification, BP and SOFM neural networks are introduced, the characteristics of the two neural networks are introduced, the sample data system and network algorithm are designed, and a set of scientific and complete evaluation methods are produced through algorithm practice and data analysis, which provides direction for the research on the health status of instrumentation in use. more...

This paper forecasts the demand of urban talents in the future years from the perspective of urban talent demand and employment situation of Chinese students. To a certain extent, there is a relationship between the supply of talents in cities and the demand for talents in China. Artificial neural network is a kind of nonlinear system which contains some simple nonlinear connection points or calculation modules. BP neural network is one of the most widely studied and widely used artificial neural networks. BP neural network includes input layer and output layer, which overcomes the shortcomings of traditional evaluation methods and enriches the relevant evaluation methods. The evaluation results can truly map the nonlinear relationship among various analysis indexes. BP neural network model is suitable for nonlinear sample analysis and belongs to quantitative analysis. The grey prediction model belongs to qualitative analysis, which can predict the future development trend of the analysis object, and does not require high data. Therefore, this paper uses the combination of BP neural network model and gray prediction model to predict the talent demand of China’s College Students employment market reasonably and effectively, and finally analyzes the reliability of the prediction results. According to the prediction results, this paper puts forward the development strategy for the city, in order to promote the modernization of the city. more...