具隱私保護機制的預測方法與電子裝置PRIVACY-PRESERVING PREDICTING METHOD AND ELECTRICAL DEVICE

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

16/817,583

專利證號

US 11,669,634 B2

專利獲證名稱

具隱私保護機制的預測方法與電子裝置PRIVACY-PRESERVING PREDICTING METHOD AND ELECTRICAL DEVICE

專利所屬機關 (申請機關)

國立中山大學

獲證日期

2023/06/06

技術說明

本發明提出的方法包括：取得一預測因子矩陣，此預測因子矩陣中至少一個屬性是被遮蔽；取得一響應矩陣；設定預測因子矩陣近似為基底矩陣與係數矩陣的乘積，設定響應矩陣近似為權重矩陣、投影矩陣與預測因子矩陣的乘積；設定基底矩陣、係數矩陣、權重矩陣與投影矩陣為非負矩陣；設定投影矩陣、權重矩陣或投影矩陣與預測因子矩陣的乘積為正交，藉此設定一成本函數；以及根據成本函數計算出基底矩陣、係數矩陣、權重矩陣與投影矩陣，據此可以執行補值、擬合與子空間分析等操作。 A provided method includes: obtaining a predictor matrix having at least one masked attribute; obtaining a response matrix; setting that the predictor matrix is approximated by a product of a basis matrix and a coefficient matrix, the response matrix is approximated by a product of a weight matrix, a projection matrix and the predictor matrix; setting that the basis matrix, the coefficient matrix, the weight matrix, and the projection matrix are non-negative; setting that the projection matrix, the weight matrix, or a product of the projection matrix and the predictor matrix are orthogonal, and thus setting a cost function; and calculating the basis matrix, the coefficient matrix, the weight matrix, and the projection matrix according to the cost function. Accordingly, operations of imputation, fitting, and sub-space analysis can be performed.

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