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Related links (1)Question 1 complete idea and Python implementation code download (2)Question 2: complete idea and Python implementation code download subject Question 1: Based on question 2 of the preliminary round, if you need to accurately predict the transaction cycle of vehicles, what method will you adopt for modeling? Please use ...

Holding fireworks to make a living, poetic to seek love catalogue 1. Principle introduction 2. Detailed steps 2.1 data acquisition 2.2 data center (Standardization) 2.3 finding covariance matrix 2.4 calculate eigenvalues and eigenvectors of covariance matrix 2.5 determining the number of principal components 2.6 calculation of princi ...

catalogue 1. Introduction 2. Detailed explanation of algorithm 2.1 data standardization 2.2} calculate the grey correlation coefficient 2.3 calculation of grey correlation coefficient 3. Case analysis 3.1 reading data 3.2 data standardization 3.3} draw the broken line diagram of x1, x4, X5, X6 and X7 3.4 grey correlation coefficient ...

1. Simulated annealing algorithm Simulated annealing algorithm draws lessons from the idea of statistical physics. It is a simple and general heuristic optimization algorithm, and has probabilistic global optimization performance in theory. Therefore, it has been widely used in scientific research and engineering. Annealing is a process in whi ...

Air return problem of school bus transportation Record the code solution of problem A in the mathematical modeling competition of "University of Technology Press" in 2021 background Every day, some teachers and staff of a school take a bus from the old campus to the new campus to work. After work, most people will return. The ...

1. Classification of classification Classification of classification? Yes, there are different kinds of classification, and it is often confused in the fields of mathematical modeling and machine learning. First of all, let's talk about Supervised learning and Unsupervised learning. Does it mean that there are no teachers and Discipline Inspe ...

Basic concepts of decision tree Decision tree is a tree. The leaf node corresponds to the decision result, and each other node corresponds to an attribute test;The sample set contained in each node is divided into sub nodes according to the results of attribute test;The root node contains the complete set of samples, and the path from the roo ...

catalogue 1. Basic definitions 2. Algorithm principle 2.1 advantages and disadvantages of the algorithm 2.2 algorithm parameters 2.3 variants 3. Distance formula in the algorithm 4. Case realization 4.1 reading data 4.2 separate training set and test set 4.3 normalization 4.4 calculating Euclidean distance 4.5 # sorting and outputti ...

Blanking of cans Problem: a company uses a set of stamping equipment to produce a can for canned drinks, which is stamped with tinplate The can is cylindrical, including the can body, upper cover and lower bottom. The height of the can is 10 cm, and the diameters of the upper cover and lower bottom are 5 cm The company uses two different speci ...

2021 may day cup mathematical modeling problem A Vaccine production issues The novel coronavirus pneumonia has been a worldwide disaster and has brought serious disasters to the world. Countries have developed new vaccines to control the epidemic. It is assumed that vaccine production needs to go through four process flows: CJ1 station, CJ2 s ...