Pattern classification method based on partial linear representation
A pattern classification and local linear technology, applied in the field of pattern recognition, can solve the problem of high time complexity of sparse coefficients, achieve the effect of reducing the number of training samples, reducing the difficulty of calculation, and improving the recognition rate
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[0019] The technical scheme of the invention is described in detail below:
[0020] Using the training sample set X containing c categories to identify the category to which the test sample y belongs, includes the following steps.
[0021] X=[X 1 ,X 2 ,...,X c ], X i =[x i1 , X i2 ,...,X iNi ] Represents the i-th training sample set, X i Contains N i Samples, x ij ∈R d (R d Represents the d-dimensional real vector set) represents the j-th training sample of the i-th category, y∈R d , C is a natural number, N i Is a natural number.
[0022] Step 1. For the test sample y, construct its neighbor training sample set:
[0023] Step 1-1, calculate the test sample y to each training sample x in the training sample set X ij Distance D ij .
[0024] D ij =||y-x ij ||(i=1,2,…,c,j=1,2,…,N i );
[0025] Step 1-2, extract the first K nearest neighbor training samples x from the training sample set 1 ,x 2 ,...,X K , Forming the nearest neighbor training sample set X′=[x 1 ,x 2 ,...,X K ], w...
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