Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 12 of 12 for “"k-anonymity"”.
-
Enabling anonymous crime reporting on mobile phones in the developing world
… an anonymization module that is supported by a k-anonymity algorithm. The advantage of using USSD is that it is available to all mobile phones (including the more basic/nonsmart phones that are used by a large percentage of the poorer population in developing countries); and reports made via USSD …
-
Privacy preserving data anonymisation: an experimental examination of customer data for POPI compliance in South Africa
… the privacy models. Two privacy models, namely k-anonymity and ldiversity, were tested on a publicly available data set. Data quality models as well as privacy risk measures were implemented. The results of the study showed that when taking both data utility and privacy risks into consideration, …
-
A theory and toolkit for the mathematics of privacy : methods for anonymizing data while minimizing information loss
… for provably anonymizing records is called k-anonymity. It modifies each record so that it matches k other individuals in a population - where k is an arbitrary parameter. This is achieved by, for example, changing specific information such as a date of birth, to a less specific counterpart …
-
On supporting K-anonymisation and L-diversity of crime databases with genetic algorithms in a resource constrained environment
… adhering to notions of privacy denned by k-anonymity and l-diversity. Our CG implementation is modular and can therefore be easily integrated with the original MCRF. We also show how our CG approach is designed to be suitable for implementation in a developing country where particular …
-
Task Oriented Privacy-preserving (TOP) Technologies Using Automatic Feature Selection
… privacy preserving techniques addressing k-anonymity and differential privacy and protect privacy while reducing the amount of modifications applied to the dataset; hence, in most of the cases achieving higher utility. We consider incorporating the concept of privacy-by-design within the …
-
Learning to de-anonymize social networks
… utility preservation. We study the trade-off of anonymity vs. utility for six popular anonymization schemes including those promising k-anonymity. Our analysis shows that none of the schemes are fit for the purpose. Finally, we present an end-to-end social graph de-anonymization attack which uses …
-
Location Privacy In Emerging Network-Based Applications
… network. We propose to introduce tunable anonymity, through both asymmetric and symmetric encryption primitives, into the authentication process so that it provides $k$-anonymity. We further extend the scenario to mobile scenarios.</p> <p>At last, it is often perceived that private …
-
On the detection of privacy and security anomalies
… definitions of privacy semantics such as k-anonymity and the discrimination rate privacy metric. The dissertation considers privacy attacks (violations of formal privacy definition) based on a sequence of SQL queries (query correlations). It is shown that interactive querying settings are …
-
Balancing utility and privacy of high-dimensional datasets : mobile phone metadata
… developed in the last two decades, such as: k-anonymity, t-closeness, and unicity. Data at the core of the so-called "big data" revolution is fundamentally high-dimensional. We show implications of high-dimensionality as paradigmatic to modern disclosure analysis. Consequently, we propose and …
-
Geospatial data obfuscation methods applied to agricultural data
Geoprivacy protection is a controversial subject within the field of agri-environmental research. Agricultural transformation and digital farming are widely used in the agriculture industry. This enhances sustainable agriculture and subsequently sustainable development and food security. At the …
-
Dynamic Privacy Management In Services Based Interactions
<p>Technology advancements have enabled the distribution and sharing of users personal data over several data sources. Each data source is potentially managed by a different organization, which may expose its data as a Web service. Using such Web services, dynamic composition of atomic data items …
-
Mathematical tools for Hesitant Sets. Applications
… hemos seleccionado tres de las más destacadas (k-anonymity, l-diversity y t-closeness). Nuestra propuesta ha sido utilizar particiones difusas en lugar de particiones nítidas para dar una mejor protección a la tabla liberada. Además, hemos adaptado las técnicas de protección previamente elegidas a …