This work concerns the problem of modelling evolving prospective agent systems. Inasmuch a prospective agent [1] looks ahead a number of steps into the future, it is confronted with the problem of having several different possible courses of evolution, and therefore needs to be able to prefer amongst them to decide the best to follow as seen from its present state. First it needs a priori prefe...

Axiom pinpointing has been introduced in description logics (DLs) to help the user to understand the reasons why consequences hold and to remove unwanted consequences by computing minimal (maximal) subsets of the knowledge base that have (do not have) the consequence in question. The pinpointing algorithms described in the DL literature are obtained as extensions of the standard tableau-based r...

This paper describes the design and implementation of a virtual agent that is capable of providing customers in a 3D online shop with advice. Based on a product knowledge base, a conversation model and a model of the shop, the agent communicates with the customer through text based dialogues and leads the customer through the virtual world using gestures.

The phenylthiourea-substituted triethoxysilane as a silane agent was synthesized and grafted on highly ordered nanoporous silica (LUS- 1) with a textured morphology and hexagonal array. This material (Tu-LUS-1) contained 0.8 mmol/g of soft base phenylthiourea group and surface area 760 m2 g-1  and was able to adsorb 0.75 mmolHg/g of TU-LUS-1 in endothermic reaction.

The Santa Fe Artificial Stock Market is a well known agent based model. A new revision of the code (ASM 2.2) is now available. This essay describes some of the changes that were made in the code base and also presents some important lessons for agent based modelers that can be illustrated with the code. Since the code is available on the internet, it is hoped that this discussion and the code b...

background: plants and their phytochemicals have immense potential for the management of different types of wound. salvia multicaulis vahl. is an evergreen shrub species, which traditionally used as a wound healing agent. objective: the aim of the present study is to evaluate phytochemicals and wound healing activity of s. multicaulis in an excision wound model. methods: preliminary phytochemic...

In this paper we have applied an interval representation of time to represent and reason about activities, events, actions and situations relevant to the construction domain. The first part of the paper formally defines the situational simulation environment and develops a set of temporal axioms which can be used to 1) Express precedence constraints between time intervals and 2) Capture the cau...

Reasoning plays a central role in intelligent systems that operate in complex situations that involve time constraints. In this paper, we present the Adaptive Logic Interpreter, a reasoning system that acquires a controlled inference strategy adapted to the scenario at hand, using a variation on relational reinforcement learning. Employing this inference mechanism in a reactive agent architectu...

This paper shows pitfalls in the formal representation of a state of a multiagent system that is changing in time and we propose a solution based on Transparent intensional logic. Moreover, we propose a method for the definition of facts and rules and communication between agents in such a way that preserves consistency of agents’ knowledge base. Using an example we present a set of methods for...