This paper reports on our work in the NLI shared task 2013 on Native Language Identification. The task is to automatically detect the native language of the TOEFL essays authors in a set of given test documents in English. The task was solved by a system that used the PPM compression algorithm based on an n-gram statistical model. We submitted four runs; word-based PPMC algorithm with normaliza...

With the emergence of software delivery platforms such as Microsoft’s .NET, code compression has become one of the core enabling technologies strongly affecting system performance. In this paper, we present PPMexe a set of compression mechanisms for executables that explores their syntax and semantics to achieve superior compression rates. The fundament of PPMexe is the generic paradigm of pred...

With the emergence of software delivery platforms such as Microsoft’s .NET, code compression has become one of the core enabling technologies strongly affecting system performance. In this paper, we present compression mechanisms for executables that explore their syntax and semantics to achieve superior compression rates. The fundament of our compression codec is the generic paradigm of predic...