CreateBitFlippingBF | R Documentation |
Applies Permanent Randomized Response to flip bits of the bit vectors given.
CreateBitFlippingBF(data, password, f)
data |
a data.frame containing the IDs in the first column and bit vectors created by any Bloom filter-based method in the second column. |
password |
a string to seed the random bit flipping. |
f |
a numeric between 0 and 1 giving the probability of flipping a bit. |
The randomized response technique is used on each bit position B[i] of a Bloom filter B. B[i] is set to one or zero with a probability of 1/2 * f for each outcome. The bit position remains unchanged with a probability of 1 - f, where 0 <= f <= 1.
A data.frame containing IDs and the corresponding bit vector.
Schnell, R., Borgs, C. (2016): Randomized Response and Balanced Bloom Filters for Privacy Preserving Record Linkage. IEEE International Conference on Data Mining (ICDM 2016), Barcelona.
CreateBF
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CreateCLK
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StandardizeString
# Load test data testFile <- file.path(path.package("PPRL"), "extdata/testdata.csv") testData <-read.csv(testFile, head = FALSE, sep = "\t", colClasses = "character") ## Encode data into Bloom Filters BF <- CreateBF(ID = testData$V1, data = testData$V7, k = 20, padding = 1, q = 2, l = 1000, password = "(H]$6Uh*-Z204q" ) # Create Permanent Randomized Response Bloom Filter RR <- CreateBitFlippingBF(BF, password = "l+kfdj1J", f = 0.1)
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