|
|
We see what we need to see
Šimeček, Michal ; Šikl, Radovan
In order to meet the requirements of the real-life situations, human perception need to be neither accurate nor detailed. Much more important for the active, exploring observer is instantaneous providing the relevant data that can better serve to the behavior. Not only the observer cannot perceive the complete scene, in fact he do not perceive much more than is relevant for his aim. In order to gain the relevant information from the visual field, the scene as well as the objects within are mentally adjusted, refined, some information are accentuated another suppressed. The principle role of human perception is to provide the information usable for visually guided action, not to be perfectly accurate and detailed reflection of the reality. In this context, the human visual system might be the inspiration for the creators of machine vision systems.
|
|
|
Episodic memory for virtual beings
Pešková, K. ; Brom, C. ; Lukavský, Jiří
Episodic memory is from the psychological point of view the memory for personal events. The problems of episodic memory in virtual humans haven't been studied deeply yet, despite it is a key aspect of virtual beings' believability in simulations, virtual drama or some computer games. The character without episodic memory can't answer simple questions, e.g. what he did the day before, and it will suffer problems, when it is interrupted because the information on interrupted task will disappear from memory. In this report the model of symbolic episodic memory for virtual beings based on Gibson's affordance theory is introduced and the prototype implementation is presented. The believability aspects are discussed e.g. whether the character can reproduce his day story and also the technical parameters (memory, access speed) are reported. The report mentions the phenomenological dimension of the model, and the differences between event forgetting in psychology and in the model are compared.
|
|
|
Thinking manifested in body
Lukavský, Jiří
In this report we review several methods for indirect monitoring of cognitive activity. Human thinking, concentration and emotional excitement are observable in pupilar changes, electrodermal activity, eye movements or reaction times. The methods are first introduced on general level, then experimental results comparing outputs of each method during Word Association Test are reported.
|
|
|
Two Connections between Epistemic and Fuzzy Logics
Běhounek, Libor
Two possible connections between epistemic and fuzzy logics are studied. Epistemic fuzzy logic as a kind of modal logic studies the reasoning of agents about fuzzy propositions; problems of such a synthesis caused by the invalidity of the axiom K are hinted at. Another direction is to found epistemic on fuzzy logic; the paper sketches the way how representing feasible knowledge as a fuzzy modality eliminated the logical omniscience paradox.
|
|
|
A Blueprint of a Conscious Cognitive Agent with Two Internal World Models
Wiedermann, Jiří
We sketch a simple, yet cognitive powerful architecture of a cognitive agent. Our model differs from other similar models by using two complementary internal world models. We know that cognitive potential of one model goes beyond that of the earlier models by its support of algorithmic processes that in their consequences reflect higher cognitive functions such as imitation learning and communication, language, thinking and consciousness development.
|
guest ::
