Topic
Task analysis
About: Task analysis is a research topic. Over the lifetime, 10432 publications have been published within this topic receiving 283481 citations.
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01 Jan 1989
TL;DR: The cognitive task analysis approach redefines the knowledge acquisition problem: knowledge acquisition, first, is about deciding what kinds of intelligent systems would make a difference and, second, about what domain specific knowledge is needed to fuel those systems.
Abstract: Publisher Summary This chapter discusses some of the common pitfalls that arise in building intelligent support systems and describe a pragmatic knowledge acquisition approach for defining and building effective intelligent support systems. The cognitive task analysis provides an umbrella structure of domain semantics that organizes and makes explicit what particular pieces of knowledge mean about problem-solving in the domain. Acquiring and using such a domain semantics is essential (l) to specify what kinds of cognitive support functions are needed, (2) to specify what kinds of computational mechanisms are capable of providing such functions, (3) to clearly delineate machine performance boundaries, and (4) to build less brittle machine problem-solvers, for example, through features that enable the human problem-solver to extend and adapt the capability of the system to handle unanticipated situations. This is in contrast to technology-driven approaches where knowledge acquisition focuses on describing domain knowledge in terms of the syntax of particular computational mechanisms. In other words, the language of implementation is used as a substitute for a cognitive language of description. The cognitive task analysis approach redefines the knowledge acquisition problem: knowledge acquisition, first, is about deciding what kinds of intelligent systems would make a difference and, second, about what domain specific knowledge is needed to fuel those systems.
87 citations
TL;DR: This paper found that high levels of task-relevant metacognition would be related to good task performance, and that some kinds of feedback would improve task relevance more than other kinds, while others would seek out and use this beneficial feedback more than others.
87 citations
Patent•
23 Oct 2000TL;DR: In this article, a task manager for operating and performing management tasks called for by a system administration manager is presented, which includes a task registration manager which stores the individual task descriptions and makes them available to the task manager.
Abstract: A task manager for operating and performing management tasks called for by a system administration manager. The task manager includes a command task manager for performing command tasks, a function task manager for performing function tasks, and a remote task execution manager for performing remote or distributed task. In addition, the task manager includes a single application program interface for interfacing the command task manager, function task manager, and remote task execution manager with the system administration manager. The task manager further performs error handling and automatic logging operations. The task manager uses a task registration manager which stores the individual task descriptions and makes them available to the task manager.
87 citations
TL;DR: A comprehensive survey of state-of-the-art task assignment mechanisms in mobile crowdsensing systems is presented and how each of the existing mechanisms works is introduced and their merits and deficiencies are discussed.
Abstract: Mobile crowdsensing has wide application perspectives and tremendous advantages over traditional sensor networks due to its low cost, extensive coverage, and high sensing accuracy properties. Task assignment is a crucial issue in mobile crowdsensing systems which is intended to achieve a good tradeoff between task quality and task cost. The design of efficient task assignment mechanisms has attracted a lot of attention and much work has been carried out. In this article, we present a comprehensive survey of state-of-the-art task assignment mechanisms in mobile crowdsensing systems. We will first introduce several fundamental issues in task assignment and classify existing mechanisms based on different design criteria. Then we introduce how each of the existing mechanisms works and discuss their merits and deficiencies. Finally, we discuss challenging issues and point out some future directions in this area.
87 citations
TL;DR: A qualitative study that investigated learner interaction in a type of real time computer-mediated communication (CMC) where the communication is carried out within a user-created virtual world found evidence that the subjects provided teacher-like feedback similar to that reported in non-CMC environments.
Abstract: This paper reports on a qualitative study that investigated learner interaction in a type of real time computer-mediated communication (CMC) where the communication is carried out within a user-created virtual world. The study, which involved undergraduate EFL learners based at two universities in Japan, examined from an interactionist perspective how the subjects managed their target language interaction during text chat involving four task types. Analysis of the transcripts revealed the presence of seven interaction management strategies proposed in sociocultural accounts of language development. Strategies identified in the data included requests for and provision of assistance. Analysis further showed the presence of continuers, self- and other-initiated correction. Although off-task discussion occurred, a striking feature of the data was the focus on task completion. The use of these strategies facilitated the creation and maintenance of a collaborative environment. Co-construction of the target lang...
87 citations