hci g

hci g

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cognitive ethnography

A qualitative method of data collection used by DCog researchers based around observation. It is “cognitive” because it focuses on computational information transformations within a functional system.

cognitive science

The scientific project dedicated to understanding the processes and representations underlying intelligent action.

cognitive walkthrough

an expert critique of a user interface that involves simulating the use of a system and analyzing possible problems in goal selection, planning, or action execution

cognitive work analysis

An approach to analyzing human work that focuses on how effective courses of action are constrained by both ecological and cognitive considerations.

cognitive-dimensions framework

This states the pertinent values of cognitive dimensions that are required to support a given type of activity, and thereby provides a means to evaluate an information artifact.


Maintains a Cartesian dualism, attributing human conduct to the operation of mental predicates. Often associated with a computational theory of mind, it is a predominate paradigm within human-computer interaction (HCI).

command language

a structured set of expressions that a computer interprets as requests for information and services

common ground

Some piece of knowledge is common ground if all the people conversing know it and they all know that the others know it, too. (See the text for a more formal and comprehensive definition.)

complexity theory

The study of how much time or resources are required to compute things. The complexity of an algorithm or problem is typically measured relative to the size of the problem, n, and expressed in order notation. For example, a time complexity of O(n2) means that the time it takes to perform the calculation increases with the square of the problem size.

computational equivalence

Two representations that, in addition to being informationally equivilent, make the same information equally readily accessible. See also informational equivalence.

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