Research Article
A Privacy-Preserved Analytical Method for eHealth Database with Minimized Information Loss
Algorithm 1
ECG composer algorithm.
(1) Given: Database schema Ω; Application Context Ψ; | QID List Γ; | (2) AL: Attribute list; | (3) QL: Target QID list; | (4) S: node set; | //Create ECG | (5) S = Construct the node set from Ψ; | (6) Build the direct edge set for each pair of (, ) based on the order of the QID accesses in Ψ; | (7) For each node { //∈ S (i: number of node); | (8) Extract the corresponding (Table, AL, Condition); | (9) QL = ∩ AL; | (10) If (QL != Φ) { | (11) Update (TABLE, QL, Condition) for ; | (14) Assess risk for ; | (15) } | (16) } |
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