2 documents found, page 1 of 1
Implementing a linear algebra approach to data processing
Pontes, Rogério; Matos, Miguel Ângelo Marques; Oliveira, José Nuno Fonseca; Pereira, JoséData analysis is among the main strategies of our time for enterprises to take advantage of the vast amounts of data their systems generate and store everyday. Thus the standard relational database model is challenged everyday to cope with quantitative operations over a traditionally qualitative, relational model. A novel approach to the semantics of data is based on (typed) linear algebra (LA), rather than rel...
Performance trade-offs on a secure multi-party relational database
Pontes, Rogério; Pinto, Mário; Barbosa, Manuel; Vilaça, Ricardo Manuel Pereira; Matos, Miguel Ângelo Marques; Oliveira, Rui Carlos Mendes deThe privacy of information is an increasing concern of software applications users. This concern was caused by attacks to cloud services over the last few years, that have leaked confidential information such as passwords, emails and even private pictures. Once the information is leaked, the users and software applications are powerless to contain the spread of information and its misuse. With databases as a ce...