Homework #5: Higher
level models
(Due 10/29/07)
1) (100 points) GOMS model
In this problem you will be providing a GOMS
style analysis of the following task:
After finishing typing a document using MS Word, a user is
trying to find and replace a misspelled word.
-
(10 points) Describe the goals and sub-goals
used
-
(10 points) Describe the operators used
-
(40 points) For each goals and sub-goals
describe which method(s) could be used. (If there is more than 3
possible methods for a given goal (or sub-goal) list at least 3
of the most commonly used methods),
-
(20 points) Describe the most probable
selection rules for each goal (or sub-goal)
-
(20 points) Present a synthesis of your work
using the standard GOMS style shown in class.
While answering questions above, please keep in
mind the following facts about this task:
-
The document can be as small as a single
sentence, or as big as a book,
-
The search
and replace may apply to a any
part of the document (including the whole document),
-
The misspelling of a word may be context dependent,
e.g. if the word "owe" is misspelled as "own". (You may assume that
during the search process, new matches are always presented with
enough context on screen for the user to make a decision without
navigating the document.)
-
You may assume that the search is only
concerned with characters (not character attributes such as
style and the like) and that the search style (such as Match
case, Whole words only... and the like) has been set once and
for all before starting the search.
Please note: In a way, one may think about this
analysis as writing a program to perform a task using basic
operators. Accordingly grading will take into account the style
of the decomposition and the comments/explanations provided.
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