A QA community label recommendation method based on convolution neural network
A convolutional neural network and question-and-answer community technology, applied in the field of question-and-answer community label recommendation, can solve problems such as unscalable, unsatisfactory recall rate and precision indicators, and inability to handle continuous update of the question-and-answer community, achieving good migration and accuracy matching effect
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[0050] The embodiments of the present invention will be further described below in conjunction with the drawings.
[0051] 1) Given software object o i , Let x i ∈R k Is the k-dimensional vector corresponding to the i-th word described. The description of length n is expressed as:
[0052]
[0053] Where ⊕ is the splicing operator, x i:i+j Refers to the word x i Stitching. x i ,x i+1 ,...,X i+j . It can be used figure 1 N*k matrix vector representation in. These word vectors are trained by the Mikolov method.
[0054] 2) The convolution operation includes a filter f ∈ R hk , It is applied to a window of h words to generate a new feature. For example, feature c i By the word x i:j+h-1 Pass c i =tanh(f·x i:i+h-1 +b) Generate, where b∈R is a bias term and tanh is a nonlinear hyperbolic tangent function. This filter should be used to describe {x 1:h ; X 2:h+1 ;...;X n-h+1:h } To generate feature maps
[0055] c={c 1 ;C 2 ;...;C n-h+1 };
[0056] Where c ∈ R n-h+1 .
[0057] ...
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