8 citations · 18 across the 9 of their papers we have counts for
9 papers
Scalable Enforcement of Fine Grained Access Control Policies in Relational Database Management Systems
Anadi Shakya, Primal Pappachan, David Maier +3
The proliferation of smart technologies and evolving privacy regulations such as the GDPR and CPRA has increased the need to manage fine-grained access control (FGAC) policies in d…
SNGuess: A method for the selection of young extragalactic transients
N. Miranda, J. C. Freytag, J. Nordin +7
With a rapidly rising number of transients detected in astronomy, classification methods based on machine learning are increasingly being employed. Their goals are typically to obt…
Design Trade-offs for a Robust Dynamic Hybrid Hash Join (Extended Version)
Shiva Jahangiri, Michael J. Carey, Johann-Christoph Freytag
The Join operator, as one of the most expensive and commonly used operators in database systems, plays a substantial role in Database Management System (DBMS) performance. Among th…
Sieve: A Middleware Approach to Scalable Access Control for Database Management Systems
Primal Pappachan, Roberto Yus, Sharad Mehrotra +1
Current approaches of enforcing FGAC in Database Management Systems (DBMS) do not scale in scenarios when the number of policies are in the order of thousands. This paper identifie…
Efficient Measuring of Congruence on High Dimensional Time Series
Jörg P. Bachmann, Johann-Christoph Freytag
A time series is a sequence of data items; typical examples are streams of temperature measurements, stock ticker data, or gestures recorded with modern virtual reality motion cont…
An Analytical Approach to Improving Time Warping on Multidimensional Time Series
Jörg P. Bachmann, Johann-Christoph Freytag
Dynamic time warping () is one of the most used distance functions to compare time series, e.g. in nearest neighbor classifiers. Yet, fast state of the art algori…
Measuring Congruence on High Dimensional Time Series
Jörg P. Bachmann, Johann-Christoph Freytag, Benjamin Hauskeller +1
A time series is a sequence of data items; typical examples are videos, stock ticker data, or streams of temperature measurements. Quite some research has been devoted to comparing…
High Dimensional Time Series Generators
Jörg P. Bachmann, Johann-Christoph Freytag
Multidimensional time series are sequences of real valued vectors. They occur in different areas, for example handwritten characters, GPS tracking, and gestures of modern virtual r…
Foundations of Traversal Based Query Execution over Linked Data (Extended Version)
Olaf Hartig, Johann-Christoph Freytag
Query execution over the Web of Linked Data has attracted much attention recently. A particularly interesting approach is link traversal based query execution which proposes to int…