Long-term declarative semantic memory is a key component of a cognitive architecture that allows an agent to perform effectively in complex tasks. Over the years, a number of new mechanisms beyond deliberate cued retrieval have been developed, including partial matching and spreading activation. However, there has yet to be a theory that coherently explains why these mechanisms are beneficial o...

The ASKNet system is an attempt to automatically generate large scale semantic knowledge networks from natural language text. State-of-the-art language processing tools, including parsers and semantic analysers, are used to turn input sentences into fragments of semantic network. These network fragments are combined using spreading activation-based algorithms which utilise both lexical and sema...

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Concept maps have been widely put to educational uses. They possess a number of appealing features which make them a promising tool for teaching, learning, evaluation, and curriculum planning. This paper presents self-associated concept mapping (SACM) which extends the use of concept mapping by proposing the idea of self-construction and automatic problem solving to traditional concept maps. Th...

According to one brain-theoretical view, high~!:.brainful1ctionsarebased on processing_!!l1j.ts called cell as~~mbJiys. <::ell assemblies are large groups of corticalpyramidal neurons with strong and reclproc-al internal connections. C~lla,ssemblies develop in a randomIy-connected neuronal network when sets of neurons are frequently attive-simillfaneolisly so that their connectionsEstrengthen (...

The cultural defense has been the subject of a great deal of recent scholarship. Much of this analysis has concerned the consequences of the cultural defense, both for defendants and victims. Scholars differ on what these unintended consequences may be, however, and identify effects ranging from encouraging American ideals to spreading racism, to legitimizing violence against women. Although se...

tic knowledge to aid decision-making has been studied Planners have traditionally not handled domain uncertainty, postponing that poesib’xlity to error monitoring routines during the execution of the plan. In real-world domains with incomplete knowledge, this results in inevitable delays d’-e to rep]annlug. This paper describes a planner that considers the rellabflity of the agent’s actions (le...

Prior theory suggests that reputation spreading (e.g., gossip) and punishment are two key mechanisms to promote cooperation in groups, but no behavioral research has yet examined their relative effectiveness and efficiency in promoting and maintaining cooperation. To examine these issues, we observed participants interacting in a four-round public goods game (PGG) with or without gossip and pun...

Mercure is an information retrieval system based on a connexionist approach and modeled by a multi-layer network. The network is composed of a query layer (set of query terms), of a term layer (representing the indexing terms) and of a document layer [Bougha 99]. Mercure includes the implementation of retrieval process based on spreading activation forward and backward through the weighted link...