Authors
Stuart K Card, Thomas P Moran, Allen Newell
Publication date
1980/7/1
Journal
Communications of the ACM
Volume
23
Issue
7
Pages
396-410
Publisher
ACM
Description
There are~ eg: N ms: poets of aser~ emt, xu {er~ rforma~ ce tha~ sys* em designers sh~ d sys~ emarka {~ e r. This arlic| e prop~ yses a~ im~} e m~ eL the Neys {T {.> ke-Levd Medea, for predkd~ go,~ e aspe~'t M w2rferma: mee: the time i: t takes, a~ expel u~ wr~;: o perform a givers* az~ m~ a give= eom, p~:{er sys {~ a. The model is b. ae~ e~ counting keystrokes: a~ d@~ er| owdevel operatkms., i:~ c {udir~ g the user's~ me= taI~ re~ aratioas arid the* system's re Pe e is coded fa~¢~ ge~ of~ e~ e {~* rati~ as an. d epe~ a~ r Nm¢~ s~:~ Ce Nve Ne~ c~ i~ s,~ HeurNfic n~} es are
: gh'ef~ Nr p'redicti~ g~ here men~ al prelaara~ ie~ s¢~ ce~ r. When tested against {data¢ m 1|) diffe: re~ systems,~ N~ I's pee~ ic~ ifye e~ f N 2t~ reem fee tMividual~ asks.. A= examNe N gia'ee m Rlus {ra {e h (~ NEe m~ l. eaa~~ aed to pr~ dece parametric predie {km. g add brow set~: sifivt {y aaaiysis c: a: a be~: sexi m redeem ce~ e|~. sfo~ s …
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