Smartphones have been equipped with the cameras that can shoot HD videos, and the video chat apps such as Skype are becoming popular. We can, therefore, intuitively predict the trend that users are expecting to enjoy HD video chats via utilizing their smartphones. Most of the current Internet services, however, cannot support the live HD video transmissions because of their low uplink rate. In ...

Understanding problem-solving strategies and how different tools support problem solving is an important but difficult problem in cognitive science. Cognitive modeling provides one way of understanding and predicting problem solving and the impact of supporting software tools. Modeling typically requires tradeoffs between fidelity of result and difficulty of model building. We used CogTool to e...

We have recently presented CarpeDiem, an algorithm that can be used for speeding up the evaluation of Supervised Sequential Learning (SSL) classifiers. CarpeDiem provides impressive time performance gain over the state-of-art Viterbi algorithm when applied to the tonal harmony analysis task. Along with interesting computational features, the algorithm reveals some properties that are of some in...

Background and Motivation Theories of the cognitive architecture (Langley et al., 2009) aim to specify the constant features of the human mind. They make assumptions about the representation and organization of memory, as well as about performance and learning mechanisms that operate over its structures. They specifically do not include content that changes, whether rapidly through reasoning an...

Objective: Substance dependence is the most critical biopsychosocial and legal problem. It has various harmful effects at the individual, familial, and society levels. The current study aimed to determine the effect of mindfulness-based cognitive therapy on reducing the intensity of substance dependence and improving cognitive emotion regulation in substance-dependent patients under methadone m...

In this paper, we describe progress we have made toward providing cognitive tutoring to students within a collaborative software environment. First, we have integrated a collaborative software tool, Cool Modes, with software designed to develop Cognitive Tutors (the Cognitive Tutor Authoring Tool). Our initial integration provides a means to capture data that acts as the foundation of a tutor f...

The Cognitive Science Research group at ETS conducts research and development at the forefront of educational assessment, using cognitive theory in the design of assessments, building cognitive models to guide interpretation of test-takers’ performance, and researching cognitive issues in the context of assessment. Moving beyond traditional (e.g., multiple-choice) tests, the group explores asse...

facing the issues with structural complexity about which stakeholders have different views, has increasingly led to the use of soft systems methodology (ssm) in solving managerial problems. moreover, the flaws of this methodology in the stages of modeling and feasible, desirable changes, have provided the motivation for applying cognitive map (cm) and system dynamics in the ssm modeling. presen...

How do humans and other animals face novel problems for which predefined solutions are not available? Human problem solving links to flexible reasoning and inference rather than to slow trial-and-error learning. It has received considerable attention since the early days of cognitive science, giving rise to well known cognitive architectures such as SOAR and ACT-R, but its computational and bra...