A prediction method and device based on tree model
A tree model and model technology are applied in the field of prediction methods and devices based on tree models, and can solve problems such as undesired data provision.
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[0057] Embodiments of this specification will be described below with reference to the accompanying drawings.
[0058] figure 1 A schematic diagram showing a system for constructing and using a privacy-preserving tree model according to an embodiment of the present specification. The system includes at least two data cubes, three data cubes are schematically shown in the figure, data cube A, data cube B and data cube C. The three data parties use their own data (shown as data 1 to data 3 in the figure) to jointly construct and use a tree model. For example, data parties A, B, and C are banks, insurance institutions, and platforms respectively, and their users may have multiple common users (such as users a, b, c, d, and e). The difference is that data parties A (such as a bank) has the characteristic value of each user's characteristic 1 (such as deposit balance), data party B (insurance institution) has the characteristic value of each user's characteristic 2 (such as the i...
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