A Systematic Review of Modifications and Validation Methods for the Extension of the Keystroke-Level Model

<div>The number of original operators preserved, adapted, inherited from other extension or literature, and newly introduced in the traditional IVIS setup category.</div>

Advances in Human-Computer Interaction

fig11

Figure 11

Figure 11: A Systematic Review of Modifications and Validation Methods for the Extension of the Keystroke-Level Model 