Extracting facts from software source code forms the foundation for any software analysis. Experience shows, however, that extracting facts from programs written in a wide range of programming and application languages is labour-intensive and error-prone. We present DeFacto, a new technique for fact extraction. It amounts to annotating the context-free grammar of a language of interest with fac...

Probabilistic context-free grammars (PCFGs) are a popular cognitive model of syntax (Jurafsky, 1996). These can be formulated to be sensitive to human working memory constraints by application of a right-corner transform (Schuler, 2009). One side-effect of the transform is that it guarantees at most a single expansion (push) and at most a single reduction (pop) during a syntactic parse. The pri...

A major target of linguistics and cognitive science has been to understand what class of learning systems can acquire the key structures of natural language. Until recently, the computational requirements of language have been used to argue that learning is impossible without a highly constrained hypothesis space. Here, we describe a learning system that is maximally unconstrained, operating ov...

Context awareness is the basis for a system’s ability to adapt to changing conditions of its environment. This ability is especially important in the public domain where a variety of systems is used, so-called public systems. Public systems perform in public spaces and are available to all people, instead of focusing on specific user groups. They also often integrate many different devices. Thu...

Context-aware systems in mobile and pervasive environments face many conflicting situations while collecting sensor data, processing sensor data to extract consistent and coherent high level context information, and disseminating that context information to assist in making decisions to adapt to the continuously evolving situations without diverting human attention. These conflicting situations...

In what follows I consider the apparent contrast between two kinds of theories of context: a theory of objective context-exempliied in the works of Kaplan and Lewis-and a theory of subjective context-exempliied in the works of McCarthy and Giunchiglia. I consider then some diiculties for the objective theory. I don't give any formalization; instead I give some theoretical points about the probl...

A good software is a software that is invisible for the user. This is possible by making context explicit in the software. The increasingly interest for the notion of context appears through the number of approaches based on it. Initially, context was mainly considered in Engineering and Cognitive Science. Now even in Engineering, one sees two sub-approaches considering context at the level of ...

This work describes a cognitive heuristic allowing agents to assess trust and delegations merging heterogenous information sources. The model is realized through Uninformed Cognitive Maps, based on the combination of: (i) categorization abilities (ii) history of personal experiences (iii) context awareness.

In wireless networks, context awareness and intelligence are capabilities that enable each host to observe, learn, and respond to its complex and dynamic operating environment in an efficient manner. These capabilities contrast with traditional approaches where each host adheres to a predefined set of rules, and responds accordingly. In recent years, context awareness and intelligence have gain...