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Notation | Description |
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| Safety parameters selected by the hospital |
| Parameters of the bilinear group |
| Secure asymmetric encryption algorithm and cryptographic hash function |
| Public keys for the hospital, the user, and the cloud |
| Secret keys for the hospital, the user, and the cloud |
| Signatures created by the hospital, the user, and the cloud |
| Total number of disease labels and the th disease label |
| The data subset to disease , the total number of data in |
| The number of features contained in each data in |
| The feature weight vector and the th component of |
| Query vector and the th data in |
| The vector obtained by feature weight distribution of |
| The vector obtained by iterative transformation of |
| The vector obtained by forward expansion of |
| The vector obtained by encryption of |
| The components of |
| The components of |
| Two large prime numbers chosen by the hospital |
| Random numbers chosen by the hospital |
| The number of nearest neighbors selected by relief-MW classifier for disease |
| Relief-Wasserstein distance between two pieces of data |
| Intermediate parameters when calculating |
| Timestamp of the -th moment and the user’s ID |
| Query request encrypted with by the user |
| Query vector encrypted with by the hospital |
| Prediagnosis result and pre-diagnosis result encrypted with by the cloud |
| Medical advice given by the hospital |
| Prediagnosis result and medical advice encrypted with by the hospital |
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