dido:public:ra:1.4_req:2_nonfunc:30_usability:efficiency
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dido:public:ra:1.4_req:2_nonfunc:30_usability:efficiency [2020/11/20 21:06] nick |
dido:public:ra:1.4_req:2_nonfunc:30_usability:efficiency [2021/06/11 14:52] (current) char |
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| - | ====== 4.2.6.2 Efficiency Metrics ====== | + | ====== 4.3.6.2 Efficiency Metrics ====== |
| [[dido:public:ra:1.4_req:2_nonfunc:30_usability| Return to Usability]] | [[dido:public:ra:1.4_req:2_nonfunc:30_usability| Return to Usability]] | ||
| + | ===== About ===== | ||
| Efficiency is measured in terms of the time it takes to complete a task from when the task is initiated to when it is successfully completed. The units used to record the time must be uniform for all tasks (i.e., milliseconds, seconds, minutes, etc). | Efficiency is measured in terms of the time it takes to complete a task from when the task is initiated to when it is successfully completed. The units used to record the time must be uniform for all tasks (i.e., milliseconds, seconds, minutes, etc). | ||
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| The time taken to complete a task can then be calculated by simply subtracting the start time from the end time: | The time taken to complete a task can then be calculated by simply subtracting the start time from the end time: | ||
| - | <m>Task Time = {End Time} – {Start Time}</m> | + | <m>Task Time = {End Time-Start Time} </m> \\ |
| There are two ways to calculate Efficiency: | There are two ways to calculate Efficiency: | ||
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| * Overall Relative Efficiency | * Overall Relative Efficiency | ||
| - | ===== Time-Based Efficiency ===== | + | ==== Time-Based Efficiency ==== |
| [[dido:public:ra:1.4_req:2_nonfunc:30_usability:efficiency | Return to Top]] | [[dido:public:ra:1.4_req:2_nonfunc:30_usability:efficiency | Return to Top]] | ||
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| To calculate the Time-Based Efficiency for all tasks and all users, the following equation applies: | To calculate the Time-Based Efficiency for all tasks and all users, the following equation applies: | ||
| - | + | <color white>o</color> <m>{Time Based Efficiency} = {sum{i=1}{R}{} sum{j=1}{N}{} {n_{i,j}} / {t_{i,j}} } / {N*R}</m> \\ | |
| - | <m>{time Based Efficiency} = {sum{i=1}{R}{} sum{j=1}{N}{} {n_{i,j}} / {t_{i,j}} } / {N*R}</m> | + | <color white>o</color> \\ |
| + | \\ | ||
| + | \\ | ||
| Where: | Where: | ||
| * **N** : The total number of tasks (goals) | * **N** : The total number of tasks (goals) | ||
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| Placing the above values in the equation: | Placing the above values in the equation: | ||
| - | <m>{time Based Efficiency} = {{({1/1} + {1/2} + {1/3} + {0/6})} / { 1*4}} = {0.46 goals / sec}</m> | + | <color white>o</color> <m>{Time Based Efficiency} = {{({1/1} + {1/2} + {1/3} + {0/6})} / { 1*4}} = {0.46 goals / sec}</m> \\ |
| - | + | \\ | |
| - | + | \\ | |
| - | ===== Overall Relative Efficiency ===== | + | ==== Overall Relative Efficiency ==== |
| [[dido:public:ra:1.4_req:2_nonfunc:30_usability:efficiency | Return to Top]] | [[dido:public:ra:1.4_req:2_nonfunc:30_usability:efficiency | Return to Top]] | ||
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| )): | )): | ||
| - | <m>{Overall Relative Efficiency} = {{sum{i=1}{R}{} sum{j=1}{N}{} {n_{i,j}}*{t_{i,j}} } / {sum{i=1}{R}{} sum{j=1}{N}{} {t_{i,j}}}} * {100%}</m> | + | <color white>o</color> <m>{Overall Relative Efficiency} = {{sum{i=1}{R}{} sum{j=1}{N}{} {n_{i,j}}*{t_{i,j}} } / {sum{i=1}{R}{} sum{j=1}{N}{} {t_{i,j}}}} * {100%}</m> \\ |
| + | \\ | ||
| + | \\ | ||
| + | \\ | ||
| + | \\ | ||
| Justin Mifsud<sup>[[dido:public:ra:1.4_req:2_nonfunc:30_usability#fn__1|1]]</sup> provides an excellent example of how for calculating Overall Relative Efficiency. | Justin Mifsud<sup>[[dido:public:ra:1.4_req:2_nonfunc:30_usability#fn__1|1]]</sup> provides an excellent example of how for calculating Overall Relative Efficiency. | ||
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| Placing the above values into the equation yields the following: | Placing the above values into the equation yields the following: | ||
| + | <color white>o</color> <m>{Overall Relative Efficiency} = ({((1*1)+(1*2)+(1*3)+(1*6))} / {(1+2+3+6)})*100 = 50%</m> \\ | ||
| + | <color white>o</color> \\ | ||
| + | \\ | ||
| + | \\ | ||
| + | \\ | ||
| + | \\ | ||
| + | \\ | ||
| + | ===== DIDO Specifics ===== | ||
| + | [[dido:public:ra:1.4_req:2_nonfunc:30_usability:efficiency | Return to Top]] | ||
| + | |||
| + | : <wrap hi><color red> To be added/expanded in future revisions of the DIDO RA </color></wrap> | ||
| + | |||
| + | /**=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- | ||
| + | /* To add a discussion page to this page, comment out the line that says | ||
| + | ~~DISCUSSION:off~~ | ||
| + | */ | ||
| + | ~~DISCUSSION:on|Outstanding Issues~~ | ||
| + | ~~DISCUSSION:off~~ | ||
| - | <m>{Overall Relative Efficiency} = ({((1*1)+(1*2)+(1*3)+(1*6))} / {(1+2+3+6)})*100 = 50%</m> | ||
dido/public/ra/1.4_req/2_nonfunc/30_usability/efficiency.1605924396.txt.gz · Last modified: 2020/11/20 21:06 by nick
