Cognitive Architectures
Issues in the Measurement of Cognitive and Metacognitive Regulatory Processes Used During Hypermedia Learning
Azevedo, Roger (University of Memphis) | Moos, Daniel C. (University of Memphis) | Witherspoon, Amy M. (University of Memphis) | Chauncey, Amber D. (University of Memphis)
The goal of this paper is to present four key assumptions regarding the measurement of cognitive and metacognitive regulatory processes used during learning with hypermedia. First, we assume it is possible to detect, trace, model, and foster SRL processes during learning with hypermedia. Second, understanding the complex nature of the regulatory processes during learning with hypermedia is critical in determining why certain processes are used throughout a learning task. Third, it is assumed that the use of SRL processes can dynamically change over time and that they are cyclical in nature (influenced by internal and external conditions and feedback mechanisms). Fourth, capturing, identifying, and classifying SRL processes used during learning with hypermedia is a rather challenging task.
Applied Cognitive Models of Frequency-based Decision Making
Staszewski, Jim (Carnegie Mellon University)
In this paper, we present a cognitive model of frequency-based decision-making applied to the task of landmine detection. The model is implemented in the ACT-R cognitive architecture and is strongly constrained by the cognitive primitives of the architecture. We then generalize the model to another task in the domain of macroeconomic decision-making using the same architecture, pursuing theoretical parsimony. We describe each model's representation requirements, assess their fits to the data, and analyze their performance scaling as a function of task and architectural parameters. Efforts to generalize the landmine detection model to macroeconomic decision making showed that reasonable fits to the macro-economic performance data could be achieved by models based either on procedural knowledge or declarative knowledge. This finding underscores the importance of distinguishing between processing strategies employed to execute tasks. Such detail appears needed to understand the neural foundations of frequency-based decision-making.
High Definition Fiber Tracking Exposes Circuit Diagram for Brain Showing Triarchic Representation, Domain General Control, and Metacognitive Subsystems
Schneider, Walter (University of Pittsburgh) | Pathak, Sudhir (University of Pittsburgh) | Phillips, Jeff (University of Pittsburgh) | Cole, Micahel (University of Pittsburgh)
Dramatic advances in the last six months in High Definition Fiber Tracking (HDFT) make it possible to image the fiber connectivity from source to destination mapping hundreds of thousands fiber tracks with sufficient resolution to identify the cable level circuit diagram of the human brain. Brain activity imaging studies using functional Magnetic Resonance Imagining (fMRI) identify differential activation patterns as a function of task and level of practice. These data show subnetworks with communication of high bandwidth vector associations, scalar priority and control signals, and interactions with control and meta cognition. The connectivity and activity data support a triarchic cognitive architecture. Processing is the synergistic interaction of three interlinked cognitive computational systems with differential computation role and evolutionary history. These data provided a detailed diagram to guide reverse engineering of the systems levels of the human brain.
The Constructor Metacognitive Architecture
Samsonovich, Alexei V. (George Mason University)
A true human-level learner should be able to deliberately construct its own knowledge, its processes of reasoning resulting in a new knowledge, its system of values and goals, and the scenario of its cognitive growth. These capabilities require a cognitive architecture of a new kind that supports metacognition, self-awareness and self-regulation. An example architecture design called Constructor is described in this work. The main distinguishing feature of this architecture is its virtually unlimited self-regulated cognitive growth ability. Other features include metacognition, self-awareness, and an intrinsic embodiment in virtual reality that is used, e.g., for active construction of cognitive and learning processes.
Funding Opportunities for Cognitive and Computer Scientists through the Institute of Education Sciences
O' (US Department of Education) | Donnell, Carol L. (US Department of Education) | Levy, Jonathan
The Institute of Education Sciences (IES) provides funding opportunities for researchers to bring their knowledge of learning, cognitive science, and technology to bear on education practice. This panel describes opportunities available through the National Center for Education Research and the National Center for Special Education Research.
OpenCog NS: A Deeply-Interactive Hybrid Neural-Symbolic Cognitive Architecture Designed for Global/Local Memory Synergy
Goertzel, Ben (Novamente LLC) | Duong, Deborah (ACI Edge)
A deeply-interactive hybrid neural-symbolic cognitive architecture is defined as one in which the neural-net and symbolic components interact frequently and dynamically, so that each intervenes significantly in the other's internal operations, and the two form a combined dynamical system at the time-scale of each component's individual cognitive operations. An example architecture of this nature that is currently under development is described: OpenCog NS, based on integration of the OpenCog cognitive architecture (which incorporates symbolic, evolutionary and connectionist aspects) with a hierarchical attractor neural network (HANN). In this integrated architecture, the neural and non-neural aspects each play major roles, and the depth of the interconnection is revealed for example in the facts that symbolic reasoning intervenes in the process of attractor formation within the HANN, whereas the HANN plays a major role in guiding the individual steps of logical inference and evolutionary program learning processes.
Reinforcement Sensitivity Theory and Cognitive Architectures
Fua, Karl Cheng-Heng (Northwestern University) | Horswill, Ian (Northwestern University) | Ortony, Andrew (Northwestern University) | Revelle, William (Northwestern University)
Many biological models of human motivation and behavior posit a functional division between those subsystems respon- sible for approach and avoidance behaviors. Gray and McNaughton's (2000) revised Reinforcement Sensitivity Theory (RST) casts this distinction in terms of a Behavioral Activation System (BAS) and a Fight-Flight-Freeze System (FFFS), mediated by a third, conflict resolution system — the Behavioral Inhibition System (BIS). They argued that these are fundamental, functionally distinct systems. The model has been highly influential both in personality psychology, where it provides a biologically-based explanation of traits such as extraversion and neuroticism, and in clinical psychology wherein state disorders such as Major Depressive Disorder and Generalized Anxiety Disorder can be modeled as differences in baseline sensitivities of one or more of the systems. In this paper, we present work in progress on implementing a simplified simulation of RST in a set of embodied virtual characters. We argue that RST provides an interesting and potentially powerful starting point for cognitive architectures for various applications, including interactive entertainment, in which simulation of human-like affect and personality is important.
Emergently Developed Cognitive Architectures: Testing by Developmental Robotics
Berg-Cross, Gary (Knowledge Strategies)
How useful are bio-developmental approaches for understanding how cognitive capabilities are acquired? One bio-developmental hypothesis is that human cognition unfolds with maturation as a massive collection of adaptive cognitive “capabilities” expressing pre-structured genetic programs. But the seeming plasticity of human cognition argues against simple formulations of innately-specified anatomical & functional processing system composed of specialized computational modules. One alternative is an architecture using domain-specific predispositions and general learning mechanisms to construct modules from interactions. This lets them emerge and unfold in a self- organized fashion as part of developmental experience. The result is a more dynamic, complex cognitive architecture explaining such things as the drive for sensorimotor control in infants, which is combines the generation of exploratory movements constrained by the interaction of ability and environment followed by the selection and maintenance of adaptive movement patterns (Schlesinger et al. 2000). Such findings are consistent with a view that ontogenetic processes are co-important (and co-dependent) with gene- based evolutionary processes for behavior and cognition.
An Architecture for General Spatial Reasoning
Wintermute, Samuel (University of Michigan, Ann Arbor)
Competence in interacting with the spatial world, the ability to move around an obstacle, or reach for a desired object, is one of the most immediate needs of any agent existing in such a world. For my thesis work, I am extending a largely-symbolic AI system, the Soar cognitive architecture (Laird, 2008), to better handle spatial problems. A key aspect in the design of Soar is a commitment to generality: the goal of the architecture is to be able to solve the same breadth problems humans are able to solve. In addition, Soar is a psychologically-inspired architecture: a second goal is to solve problems in a manner similar to humans. These goals are reflected in the design of the existing architecture, and must be reflected in the design of any extension to it. Systems for spatial reasoning exist, but they are typically defined for limited domains, and in isolation from a comprehensive intelligent system. My approach to the problem derives from work in diagrammatic reasoning and systems exploring mental imagery. The system augments symbolic working memory in Soar with short-term and long-term memories specialized for spatial information. Reasoning is then a process of manipulating both symbolic and lower-level perceptual data.