Name
Abstract | ||
|---|---|---|
The problem of publishing personal data without giving up privacy is becoming increasingly important. An interesting formalization
recently proposed is the k-anonymity. This approach requires that the rows in a table are clustered in sets of size at least k and that all the rows in a cluster become the same tuple, after the suppression of some records. The natural optimization
problem, where the goal is to minimize the number of suppressed entries, is known to be NP-hard when the values are over a
ternary alphabet, k=3 and the rows length is unbounded. In this paper we give a lower bound on the approximation factor that any polynomial-time
algorithm can achieve on two restrictions of the problem, namely (i) when the records values are over a binary alphabet and
k=3, and (ii) when the records have length at most 8 and k=4, showing that these restrictions of the problem are APX-hard. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.1007/s10878-009-9277-y | Journal of Combinatorial Optimization |
Keywords | Field | DocType |
k,-anonymity,APX-hardness,Computational complexity,Clustering | Row,Mathematical optimization,Combinatorics,Tuple,Upper and lower bounds,k-anonymity,Time complexity,Optimization problem,Mathematics,Computational complexity theory,Binary number | Journal |
Volume | Issue | ISSN |
22 | 1 | 1382-6905 |
Citations | PageRank | References |
10 | 0.56 | 10 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Paola Bonizzoni | 1 | 502 | 52.23 |
| Gianluca Della Vedova | 2 | 342 | 36.39 |
| Riccardo Dondi | 3 | 89 | 18.42 |