Group quantity diversity estimation method based on information moment
A technology of information moments and diversity, which is applied in computing, database indexing, data processing applications, etc., can solve the problems that the sampling results are greatly affected, the group estimation is inaccurate, and the number of products cannot be reflected.
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[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail in combination with the embodiments and accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. The technical solutions of the present invention will be described in detail below in conjunction with the embodiments and accompanying drawings, but the scope of protection is not limited thereto.
[0032] Such as figure 1 Shown is a recursive sampling process. Divide the sampling process into i layers, assuming that the sampling probability of layer 0 is 1, that is, all groups can be sampled, the sampling probability of the first layer is p, the sampling probability of the second layer is p2, and so on, and the next layer is the upper layer A subset of a layer. For la...
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