Computational Modelling

Misyurov D.A. Dialectical formulas based on the binary notation as the development formulas // Credo New. 2012. №2

by Dmitry Misyurov

The article suggests dialectical formulas based on the binary notation as the development formulas: formula with... more The article suggests dialectical formulas based on the binary notation as the development formulas: formula with dominant and the non-dominant elements; universal formula; formula with symbolic weight of elements; tautological formula. For example, it suggests an opportunity to use the dialectical formulas for modeling and artificial intelligence creation, etc.

Simulations demonstrate a simple network to be sufficient to control branch point selection, smooth muscle and vasculature formation during lung branching morphogenesis

by Denis Menshykau

G´eraldine Celli`ere, Denis Menshykau, Dagmar Iber
BiologyOpen in press

Proper lung functioning requires not only a correct structure of the conducting airway tree, but also the... more Proper lung functioning requires not only a correct structure of the conducting airway tree, but also the simultaneous
development of smooth muscles and vasculature. Lung branching morphogenesis is strongly stereotyped and
involves the recursive use of only three modes of branching. We have previously shown that the experimentally
described interactions between Fibroblast growth factor (FGF)10, Sonic hedgehog (SHH) and Patched (Ptc) can
give rise to a Turing mechanism that not only reproduces the experimentally observed wildtype branching pattern,
but also, in part counterintuitive, patterns in mutant mice. Here we show that, even though many proteins affect
smooth muscle formation and the expression of Vegfa, an inducer of blood vessel formation, it is sufficient to add
FGF9 to the FGF10/SHH/Ptc module to successfully predict simultaneously the emergence of smooth muscles in
the clefts between growing lung buds, and Vegfa expression in the distal sub-epithelial mesenchyme. Our model
reproduces the phenotype of both wildtype and relevant mutant mice, as well as the results of most culture conditions
described in the literature.

Computational modelling of phonological acquisition: Simulating error patterns in nonword repetition tasks

by Gary Jones

Tamburelli, M., Jones, G., Gobet, F., & Pine, J. M. (in press). Computational modelling of phonological acquisition: Simulating error patterns in nonword repetition tasks. Language and Cognitive Processes.

Why chunking should be considered as an explanation for developmental change before short-term memory capacity and processing speed

by Gary Jones

Jones, G. (in press). Why chunking should be considered as an explanation for developmental change before short-term memory capacity and processing speed. Frontiers in Cognitive Science.

Autonomy and Desire in Machines and Cognitive Agent Systems

by Kevin Magill

Co-authored with Yasemin J. Erden, published 'Online First' in 'Cognitive Computation', 2012, DOI DOI 10.1007/s12559-012-9140-9. Available through subscribing institutions. Drop me a line if you can't access.
Substantially revised from 2011 paper of same title.

The development of cognitive agent systems relies on theories of agency, within which the concept of desire is key.... more The development of cognitive agent systems relies on theories of agency, within which the concept of desire is key. Indeed, in the quest to develop increasingly autonomous cognitive agent systems, desire has had a significant role. We argue, however, that insufficient attention has been given to analysis and clarification of desire as a complex concept. Accordingly, in this paper, we will draw on some key philosophical accounts of the nature of desire, including what distinguishes it from other mental and motivational states, in order to identify some key characteristics of desire as a complex concept. We will then draw on these in order to investigate the role, definition and adequacy of concepts of desire within applied theoretical models of agency and agent systems.

Las jerarquías conceptuales en UML comparando la norma ISO 2788 con el metamodelo de UML

by Jorge Morato

Kleinschmidt, D. F., Fine, A. B., & Jaeger, T. F. (2012). A belief-updating model of adaptation and cue combination in syntactic comprehension. In CogSci12

by Dave Kleinschmidt

Talk to be presented at CogSci12 in Sapporo, Japan.

We develop and evaluate a preliminary belief-updating model which links intermediate-term (i.e., over several days)... more We develop and evaluate a preliminary belief-updating model which links intermediate-term (i.e., over several days) syntactic adaptation to the joint statistics of syntactic structures and lexical cues to those structures. This model shows how subjects differentially depend on different cues to syntactic structure following changes in the reliability of those cues, as shown by Fine and Jaeger (2011). By relating syntactic adaptation and cue combination to rational inference under uncertainty, this work links learning and adaptation in sentence processing with adaptation in speech perception and non-linguistic domains.

Embodied conversational characters: representation formats for multimodal communicative behaviours

by Christopher Edward Peters

Krenn, B., Pelachaud, C., Pirker, H., and Peters, C. "Embodied conversational characters: representation formats for multimodal communicative behaviours". In P. Petta, C. Pelachaud and R. Cowie (Eds.), Emotion-Oriented Systems: The Humaine Handbook, pp. 389-415, Cognitive Technologies Series, Springer, January 2011
Bibtex available here: http://www.coventry.ac.uk/ec/~cpeters/bibtex/bibtex.html#HandbookRepresentation2011

This contribution deals with the requirements on representation languages employed in planning and displaying... more This contribution deals with the requirements on representation languages employed in planning and displaying communicative multimodal behaviour of Embodied Conversational Agents (ECAs). We focus on the role of behaviour representation frameworks as part of the processing chain from intent planning to the planning and generation of multimodal communicative behaviours. On the one hand, the field is fragmented, with almost
everybody working on ECAs developing their own tailor-made representations, which is amongst others reflected in the extensive references list. On the other hand, there are general aspects that need to be modelled in order to generate multimodal behaviour. Throughout the chapter we take different perspectives on existing representation languages and outline the fundament of a common framework.

Bottom-Up Visual Attention for Virtual Human Animation

by Christopher Edward Peters

Peters, C., and O' Sullivan, C. "Bottom-up visual attention for virtual human animation", Proceedings of the 16th International Conference on Computer Animation and Social Agents (CASA), Rutgers University, New York, pp. 111-117, 2003

We present a system for the automatic generation of bottom-up visual attention behaviours in virtual humans. Bottom-up... more We present a system for the automatic generation of bottom-up visual attention behaviours in virtual humans. Bottom-up attention refers to the way in which the environment solicits one’s attention without regard to task-level goals. Our framework is based on the interactions of multiple components: a synthetic vision system for perceiving the virtual world, a model of bottom-up attention for early visual processing of perceived stimuli, a memory system for the storage of previously sensed data and a gaze controller for the generation of resultant behaviours. Our aim is to provide a feeling of presence in inhabited virtual environments by endowing agents with the ability to pay attention to their surroundings.

Living in the Past and Looking Toward the Future Archaeologists develop models to explain agricultural history, future.

by Isaac Ullah

An editorial about MedLanD project research by Chris Gorski for "Inside Science"

"Conexionismo. Una útil herramienta para otras ciencias y un problemático modelo para la Psicología"

by Vicente Caballero de la Torre

Vicente CABALLERO DE LA TORRE y Francisco José ROBLES RODRÍGUEZ

Cuando se habla de “conexionismo” o “teoría conexionista” nos estamos refiriendo a una rama de las Neurociencias y de... more Cuando se habla de “conexionismo” o “teoría conexionista” nos estamos refiriendo a una rama de las Neurociencias y de las Ciencias cognitivas que surgió hace algunas décadas como alternativa minoritaria a la IA (inteligencia artificial). Las redes neuronales artificiales fueron originalmente un intento de simulación abstracta de los sistemas nerviosos biológicos. Sin embargo, no es fácil que haya un modelo completamente satisfactorio. Como conclusión se afirma que la Teoría de redes
y la Psicología cognitiva se desarrollan al margen de una serie de cuestiones filosóficamente problemáticas pensando, quizá, que se podrá dar cuenta de ellas cuando el problema de fondo (la relación mente-cerebro) se haya resuelto.

Palabras clave: “teoría conexionista”, “neurociencias”, “modelo”, “inteligencia artificial”, “problema mente-cerebro”.

Fundamentals of agent perception and attention modelling

by Christopher Edward Peters

Peters, C., Castellano, G., Rehm, M., Andre, E., Volpe, G., Camurri, A., Raouzaiou, A., Rapantzikos, K., Karpouzis, K., and Vasalou, A. .
In P. Petta, C. Pelachaud and R. Cowie (Eds.), Emotion-Oriented Systems: The Humaine Handbook, pp. 293-319, Cognitive Technologies Series, Springer, January 2011 isbn:978-3-642-15183-5
Bibtex available here:
http://www.coventry.ac.uk/ec/~cpeters/bibtex/bibtex.html#HandbookPerception2011

Perception and attention mechanisms are of great importance for entities situated within complex dynamic environments.... more Perception and attention mechanisms are of great importance for entities situated within complex dynamic environments. With roles extending greatly beyond passive information services about the external environment, such mechanisms actively prioritise, augment and expedite information to ensure that the potentially relevant is made available so appropriate action can take place. Here, we describe the rationale behind endowing artificial entities, or virtual agents, with real-time perception and attention systems. We cover the fundamentals of designing and building such systems. Once equipped, the resulting agents can achieve a more substantial connection with their environment for the purposes of reacting, planning, decision making and, ultimately, behaving.

Towards Automatically Detecting Whether Student Learning is Shallow

by Jaclyn Ocumpaugh

Co-Authored with S.J.d. Baker, Ryan, Sujith Gowda, Albert Corbett. For the 11th International Conference on Intelligent Tutoring Systems.

Towards Sensor-Free Affect Detection in Cognitive Tutor Algebra

by Jaclyn Ocumpaugh

Co-authored with: S.J.d. Baker, Ryan, Sujith M. Gowda, Michael Wixon, Jessica Kalka, Angela Z. Wagner, Aatish Salvi, Vincent Aleven, Gail W. Kusbit, and Lisa Rossi.  For the 5th International Conference on Educational Data Mining.

Novelty processing and emotion: conceptual developments, empirical findings and virtual environments

by Christopher Edward Peters

Grandjean, D., and Peters, C.
In P. Petta, C. Pelachaud and R. Cowie (Eds.), Emotion-Oriented Systems: The Humaine Handbook, pp. 441-458, Cognitive Technologies Series, Springer, January 2011 isbn:978-3-642-15183-5
Bibtex available here: http://www.coventry.ac.uk/ec/~cpeters/bibtex/bibtex.html#HandbookNovelty2011

Novelty detection is a crucial ability of organisms to detect changes in the environment and to adapt their behaviours... more Novelty detection is a crucial ability of organisms to detect changes in the environment and to adapt their behaviours accordingly. In this chapter we review a conceptual framework of novelty detection informed by cognitive neuroscience and cognitive psychology. The relationship between attentional processes and novelty detection is also discussed and developed, supported by a case study highlighting methods for implementing a novelty detection capability for artificial agents in virtual environments.

TRoPICALS: a computational embodied neuroscience model of compatibility effects

by Daniele Caligiore

Objects, Words and Actions: Some Reasons Why Embodied Models are Badly Needed in Cognitive Psychology

by Daniele Caligiore

Some new directions in systems modelling practice.

by Peter Mellalieu

Mellalieu, P. J. (1985). Some New Directions in Systems Modeling Practice. New Zealand Journal of Technology, 1(4), 223–238.

See also:
Mellalieu, P. J., & Turner, K. D. (1985). Expert Systems for Agricultural Production [crop damage in agricultural crops]. Proceedings of the Operational Research Society of New Zealand. Retrieved from http://unitec.academia.edu/PeterMellalieu/Papers/1518830/Expert_systems_for_agricultural_production_crop_damage_in_agricultural_crops_

Systems modeling has an accepted role in improving decision-making within industrial organisations. The effectiveness... more Systems modeling has an accepted role in improving decision-making within industrial organisations. The effectiveness of systems modeling is being improved through deepening of existing theoretical knowledge; transferring expertise to new application areas; and acquiring and applying new concepts. This paper focuses primarily on the last approach, dealing particularly with the potential offered by ‘expert systems’ and ‘electronic text book’ technologies. An introduction to these technologies is given with specific case study detail.

Flood Detention, Nature Development and Water Quality In a Detention Area Along the Lowland River Sava, Croatia

by Marjolijn Haasnoot

Analytic influence functionals for numerical Feynman integrals in most open quantum systems

by Nike Dattani