Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Perturbation Methods for Protection of Sensitive Location Data:
  Smartphone Travel Survey Case Study   Smartphone based travel data collection has become an important tool for the
analysis of transportation systems. Interest in sharing travel survey data has
gained popularity in recent years as "Open Data Initiatives" by governments
seek to allow the public to use these data, and hopefully be able to contribute
their findings and analysis to the public sphere. The public release of such
precise information, particularly location data such as place of residence,
opens the risk of privacy violation. At the same time, in order for such data
to be useful, as much spatial resolution as possible is desirable for utility
in transportation applications and travel demand modeling. This paper evaluates
geographic random perturbation methods (i.e. Geo-indistinguishability and the
Donut geomask) in protecting the privacy of respondents whose residential
location may be published. We measure the performance of location privacy
methods, preservation of utility and randomness in the distribution of
perturbation distances with varying parameters. It is found that both methods
produce distributions of spatial perturbations that conform closely to common
probability distributions and as a result, that the original locations can be
inferred with little information and a high degree of precision. It is also
found that while Achieved K-estimate anonymity increases linearly with desired
anonymity for the Donut geomask, Geo-Indistinguishability is highly dependent
upon its privacy budget factor (epsilon) and is not very effective at assuring
desired Achieved K-estimate anonymity.

23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th