Cyber & formal methods publications

We present novel online index learning algorithms. When compared to other approaches, including one-versus-rest and top-down learning and classification using support vector machines, we find that indexing is highly advantageous…

This tutorial describes the use of PL to model signal transduction processes. It begins with a general discussion of Symbolic Systems Biology, followed by some background on rewriting logic and…

This paper discusses event-based semantics in the context of the emerging concept of Cyber Physical Systems and describes two related formal models concerning policy-based coordination and Interactive Agents.

We describe a general technique for building abstract interpreters over powerful universally quantified abstract domains that leverage existing quantifier-free domains.

Although compositional techniques are being successfully employed in practice, the use of such techniques is often rather informal and intuitive, and typically a justification for correct behaviour of the composed…

We will demonstrate distributed conflict resolution in the context of personalized meeting scheduling. The demonstration will show how distributed constraint optimization can be used to facilitate interaction between cognitive agents…

Our approach uses canonical Huffman codes to generate compact opcodes with custom-sized operand fields and with a virtual machine that directly executes this compact code. In effect, this automatically creates…

This report captures some of the salient points discussed during the DARPA workshop on Self-Aware Computer Systems held on April 27-28, 2004 in Washington D.C.

We present convergent rewrite systems over conditional values that can interact with macro expansion and evaluation and transform them into Boolean expressions.

We present a lightweight tool, called RegReg, based on a hierarchy of lexers described by tagged regular expressions. By using tags, the automatically generated parse tree can be easily manipulated.