Study On The Evaluation Of The Redevelopment Value Of Red House Based On AMPSO-BP Algorithm And Grey Fuzzy Theory

With the continuous development of society and economy,the advantages and potential of investing in dormitories have fully emerged.However,due to the particularity of the uncompleted buildings,the relevant non-performing assets assessment system is still incomplete.China’s asset assessment specification has no clear explanation and guidance for the evaluation of the value of the redevelopment of the rotten shed.This has led to a major controversy over how to evaluate the value of the rotten shed.This article compares and analyzes several commonly used methods in the evaluation of construction in progress,and finally selects the cost method and the hypothetical development method to evaluate the value of the redevelopment of the tailgate,and makes targeted improvements,In order to better adapt to the assessment of the value of the redeveloped building.First,the cost method is used to evaluate the value of the redevelopment of uncompleted buildings.The prediction of construction project cost is an important part of the assessment of the value of the building.The accuracy of the construction project will directly affect the investment decision of the project.Therefore,this paper proposes to construct an AMPSO-BP neural network to predict construction project cost.Due to the slow convergence rate of BP neural network and the ease of falling into the local optimum,the BP neural network is optimized through the adaptive mutation particle swarm optimization algorithm.The main influencing factor of the project cost is the forecasting index of the construction project cost,and the prediction model of the engineering cost based on the AMPSO-BP neural network is established.and the results of BP neural network and AMPSO-BP neural network are compared by engineering examples to verify the feasibility of the AMPSO-BP prediction model.Subsequently,taking the example of a large-scale unfinished building in Yunnan as an example,the value of land acquisition costs,development costs,management fees,investment interest,development profits,and reinforcement and repair costs can be obtained respectively to obtain the value of the redevelopment of uncompletedbuildings.Second,the assumption of the development method was used to evaluate the value of the redevelopment of the ragged house.Evaluation of the hypothetical development method focuses on the use of the market method to assess the value of unfinished buildings after the completion of construction.In this paper,according to the limitations of the traditional market comparison method,the grey fuzzy modeling of the market comparison method is proposed.First,the AHP is used to screen the main factors affecting the real estate price;Second,through the closeness principle in fuzzy mathematics theory,we choose the comparable example that is closest to the real estate to be evaluated;third,to use the GM(1,N)model to establish the state relationship between house price and each factor,and to estimate the price of the real estate to be evaluated;finally,Fourthly,the value of the time series of DGM(1,1,m)prediction model constructed in the grey system theory is finally used to predict the completion of the construction of the tailgate in the future.Based on the above theories as a model,taking a large-scale apartment in Yunnan as an example,the grey fuzzy theory was used to evaluate the feasibility of assessing real-time prices and predicting future real estate values.According to the value of the known after-construction building,minus the calculated parameters,the value of the unfinished building can be obtained.Finally,considering the respective advantages of the comprehensive cost method and the hypothetical development method,the average value of both the cost method and the hypothetical development method is taken as the final valueof the refinanced building.Based on the above theoretical model,the following conclusions are drawn from the example verification analysis.The revised cost method and the hypothetical development method were used to evaluate the value of the redevelopment of the ragged house,and the gap between the two assessment results was very small.The rationality of the two improved methods for evaluating the redeveloped value of the tailgate is also more applicable to the physical assessment.Therefore,this paper combines the advantages of the two,taking the arithmetic average of the two as the finalevaluation result,and concludes that the final redevelopment value of the unfinished building is 1975.76 million.