Belief revision is concerned with incorporating new information into a pre-existing set of beliefs. When the new information comes from another agent, we must first determine if that agent should be trusted. In this paper, we define trust as a pre-processing step before revision. We emphasize that trust in an agent is often restricted to a particular domain of expertise. We demonstrate that thi...

We apply the dressing method to a string solution given by a static string wrapped around the equator of a three-sphere and find that the result is the single spike solution recently discussed in the literature. Further application of the method allows the construction of solutions with multiple spikes. In particular we construct the solution describing the scattering of two single spikes and c...

This paper describes REVINOS, an incremental modeling and cooperative revision tool for Knowledge Bases (KB) expressed with situation nodules. Situation nodules are simple and understandable objects, which allow to specify step by step interactions between the knowledge-based system and his environment. Knowledge representation by situation nodules has been applied for defining the chaining of ...

background: several studies have examined the effects of folic acid fortification on the occurrence of orofacial clefts. this study was carried out to evaluate the impact of flour fortification with folic acid on oral clefts in northern iran.   methods : in this hospital based study from march 2006 to september 2009, we screened the total number of live births at all hospitals in golestan provi...

The typical progression of oral cancer is from hyperplastic epithelial lesions through dysplasia to invasive carcinoma. It is important to investigate malignant oral cancer progression and development in order to determine useful approaches of prevention of dysplastic lesions. The present study aimed to gain insights into the underlying molecular mechanism of oral carcinogenesis by establishing...

In [11] it is shown how propositional dynamic logic (PDL) can be interpreted as a logic of belief revision that extends the logic of communication and change (LCC) given in [7]. This new version of epistemic/doxastic PDL does not impose any constraints on the basic relations and because of this it does not suffer from the drawback of LCC that these constraints may get lost under updates that ar...

Data-driven revision of decision models is defined as follows: given an existing model and a set of data items, revise the model to match the data items. In this paper, we propose and experimentally evaluate a method for the revision of qualitative hierarchical multi-attribute models in DEX methodology. The revision method is automatic, but limited to the modification of utility functions. Usin...