In Computer Supported Collaborative Learning (CSCL), one of the most important tasks for instructional designers is to define scenarios that foster group learning. Such scenarios, defined as Units of Learning (UoLs), comprise different components and are organized according to pedagogical approaches to orchestrate group learning processes. Examples of UoL components are learning objects, studen...

The satissability paradigm has been hitherto applied to planning with only primitive actions. On the other hand, hierarchical task networks have been successfully used in many real world planning applications. Adapting the satissability paradigm to hierarchical task network planning, we show how the guidance from the task networks can be used to signiicantly reduce the sizes of the propositiona...

Over the past fteen years a variety of interactive IDA systems have been developed to support strategic reasoning for data analysis. We present an AI framework, hierarchical task network planning, that provides a unifying view of these e orts. We describe a taxonomy of strategic approaches to IDA, based on the planning framework, and discuss the strengths and weaknesses associated with each app...

The Belief-Desire-Intention (BDI) model of agency is an architecture based on Bratman’s theory of practical reasoning. Hierarchical Task Network (HTN) decomposition on the other hand is a planning technique which has its roots in classical planning systems such as STRIPS. Despite being used for different purposes, HTN and BDI systems appear to have a lot of similarities in the problem solving a...

the purpose of this study was to investigate the moderating role of conscientiousness personality trait in the relationship of emotional exhaustion with job performance (task performance, organizational citizenship behaviors). the participants of this study consisted of 400 high school teachers in khuzestan province (260 male & 140 female) that were selected by multi-stage random sampling metho...

Hierarchical Task Networks (HTNs) are a common model for encoding knowledge about planning domains in the form of task decompositions. We present a novel algorithm that uses invariant analysis to construct an HTN from the PDDL description of a planning domain and a single representative instance. The algorithm defines two types of composite tasks that interact to achieve the goal of a planning ...

Hierarchical task analysis (HTA) is a core ergonomics approach with a pedigree of over 30 years continuous use. At its heart, HTA is based upon a theory of performance and has only three governing principles. Originally developed as a means of determining training requirements, there was no way the initial pioneers of HTA could have foreseen the extent of its success. HTA has endured as a way o...