Multi-assortment commodity price expectation data pre-processing method based on neural networks
A neural network and commodity price technology, applied in the field of data processing, can solve the problems of lack of flexibility in forecasting methods, inability to guarantee the accuracy of price forecasts, lack of flexibility and versatility, etc.
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[0046] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:
[0047] as attached figure 1 Shown, the embodiment of the present invention carries out according to the following steps:
[0048] Step 1. Extract the name, model, type and price data of commodities in the webpage, and establish a data set X={A with h commodities 1 , A 2 ,...,A h}, assuming that the price data extracted from the i-th commodity is n, A i ={x 1 , x 2 ,...,x n}, where i ∈ [1, h], x 1 , x 2 ,...,x n refers to the A i n price data extracted from a commodity;
[0049] Step 2. Calculate the price magnitudes of i different commodities, and obtain the price magnitudes of different commodities M={b 1 , b 2 ,...,b h};
[0050] Step 3. Customize a forecast sample that contains the number of data z, and the total number of predicted prices is D;
[0051] Step 4, select the prediction model;
[0052] Step 5, when the selected predicti...
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