PRIVACY-PRESERVING DATA COLLECTION, PUBLICATION, AND ANALYSIS

摘要

A data collection procedure is described, which can be performed automatically for each subject of a study as the participant produces the data being collected. In one case, the procedure transforms the data matrix X (of the participants' data) to AXB, where matrix A is a row operator that transforms data records (cases) in X and matrix B is a column operator that transforms data attributes (variables) in X, and the keys to generate these random operators are held separately by different parties. In another case, each participant's data is decomposed into a sum of k vectors before being collected and variously transformed by a plurality of masking service providers.

主权项

1. A computer-implemented method for preserving privacy for data collection, publication, and analysis, the method comprising:
receiving data input from a participant; before the data is available to a party other than the participant, transforming the data input from the participant to a masked data by applying a first invertible matrix to the data input from the participant; and providing the masked data to a first party collecting the data.