The Wizard of Oz (WOz) technique is an experimental evaluation mechanism. It allows the observation of a user operating an apparently fully functioning system whose missing servic...
This paper describes some recent experiments that assess user behavior in a multi-modal environment in which actions can be performed with equivalent effect in speech, keyboard or...
A software tool called EXPLAINER has been developed for helping programmers perform new tasks by exploring previously worked-out examples. EXPLAINER is based on cognitive principl...
Multimodal interaction enables the user to employ different modalities such as voice, gesture and typing for communicating with a computer. This paper presents an analysis of the ...
We describe pictographic naming, a new approach to naming for pen-based computers, in which filenames are pictures rather than ASCII strings. Handwriting recognition (HWX) of a n...
Gestures are a powerful way to specify both objects and operations with a single mark of a stylus or mouse. We have extended an existing user interface toolkit to support gestures...
tasks to be performed. This Abstract Artifact Model is a description of the form of the artifact(s) without any nt to concrete implementation detail. The Abstract Artifact Model is...
Peter Johnson, Stephanie Wilson, Panos Markopoulos...