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paper.tex
usage.tex
| @@ -12,11 +12,9 @@ problem: what is the value of an app? | @@ -12,11 +12,9 @@ problem: what is the value of an app? | ||
| 12 | All smartphone users intuitively realize that smartphone apps differ in | 12 | All smartphone users intuitively realize that smartphone apps differ in |
| 13 | value---an email client, for example, is probably more valuable than a app | 13 | value---an email client, for example, is probably more valuable than a app |
| 14 | that makes farting sounds. But is it possible to quantify these subjective | 14 | that makes farting sounds. But is it possible to quantify these subjective |
| 15 | -distinctions and produce a value measure? | ||
| 16 | - | ||
| 17 | -To argue that this is possible we present two experiments that elucidate | ||
| 18 | -smartphone app value in the form of both ordinal and cardinal utilities, | ||
| 19 | -respectively: | 15 | +distinctions and produce a value measure? To argue that this is possible we |
| 16 | +present two experiments that elucidate smartphone app value in the form of | ||
| 17 | +both ordinal and cardinal utilities: | ||
| 20 | % | 18 | % |
| 21 | \begin{enumerate} | 19 | \begin{enumerate} |
| 22 | 20 | ||
| @@ -72,12 +70,12 @@ videoconferencing app is not. Ultimately, all the energy consumption | @@ -72,12 +70,12 @@ videoconferencing app is not. Ultimately, all the energy consumption | ||
| 72 | comparison truly reveals is that the two apps do different things---which we | 70 | comparison truly reveals is that the two apps do different things---which we |
| 73 | already knew. | 71 | already knew. |
| 74 | 72 | ||
| 75 | -Using energy consumption alone even makes apples-to-apples comparison of the same app | ||
| 76 | -difficult. Given an app that consumes twice as much energy on Alice's | ||
| 77 | -smartphone than on Bob's, the question of why is left unanswered by pure | ||
| 78 | -energy measures. Even if usage time can be used to normalize the comparison | ||
| 79 | -to the power consumed, power consumption alone cannot incorporate differences | ||
| 80 | -due to the different app features or configurations used by Alice and Bob. | 73 | +Using energy consumption alone even makes apples-to-apples comparison of the |
| 74 | +same app difficult. Given an app that consumes twice as much energy on | ||
| 75 | +Alice's smartphone than on Bob's, the question of why is left unanswered by | ||
| 76 | +pure energy measures. Even if usage time can be used to normalize the | ||
| 77 | +comparison, power consumption alone cannot incorporate differences due to the | ||
| 78 | +different app features or configurations used by Alice and Bob. | ||
| 81 | 79 | ||
| 82 | By computing value and, thus, energy efficiency, we can overcome these | 80 | By computing value and, thus, energy efficiency, we can overcome these |
| 83 | weaknesses. A value measure should allow us to compare the efficiency of two | 81 | weaknesses. A value measure should allow us to compare the efficiency of two |