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Fig. 3.
Two Crowdsourcing Tasks Timeline
Fig. 4.
Crowdsourcing Task using Quality Testing Method Timeline
In Fig.3, we see: T(two crowdsourcing tasks) = T(crowdsourcing task A) +
T(transition)+ T(crowdsourcing task B)
In Fig.4, we see: T(crowdsourcing task using quality testing method) =
T(crowdsourcing task A') + T(crowdsourcing task B') - T(concurrent working)
In above equations:
a)
Generally, crowdsourcing task B' started soon after crowdsourcing task A' began
or they start at the same time. Thus T(concurrent working) ≈ T(crowdsourcing
task A') then T(crowdsourcing task using crowdsourcing quality testing method)
≈ T(crowdsourcing task B').
b)
Since during the process of crowdsourcing task A' we can get quality feedback of
its submitted results, we can promote valid submitted results with the assistance
of effective crowdsourcing task mode. Therefore, normally T(crowdsourcing task
A') is slightly smaller than T(crowdsourcing task A).
c)
Compared to crowdsourcing task B, crowdsourcing task B' in its process might
be influenced by the completion of crowdsourcing task A. Thus T(crowdsourcing
task B') is usually greater than T(crowdsourcing task B).
d)
By technical methods, T(transition) might be controlled to lower level.
For tasks' finish time, the following are advantages of “Crowdsourcing task using
quality testing method”: (1) two crowdsourcing tasks work concurrently and saves
large amount of task time. (2) It does not need form and transition time.
