PPsky: Privacy-Preserving Skyline Queries with Secret Sharing in eHealthcare
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Applying skyline queries to medical data can considerably benefit medical analysis in eHealthcare. However, as medical data often involves sensitive personal data, privacy concerns have become a significant impediment to the development of eHealthcare. Although several privacy-preserving skyline query schemes in eHealthcare have been put forth, they need a trusted platform to generate and assign secret keys for the multi-source scenario. In addition, those schemes incur non-trivial computational costs on resource-limited entities. To address these limitations, we propose a novel privacy-preserving skyline query scheme, named PPsky, based on arithmetic secret sharing, in which a series of secure protocols are designed to handle the basic operations in skyline queries. Security analysis illustrates that our PPsky scheme is privacy-preserving, and the evaluation results also validate the efficiency of our PPsky scheme.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.003 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.015 | 0.019 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it