The importance of the number of users is evident by comparing
the results for the projects on potholes and architectural barriers. In
the former, where all Como citizens were invited to participate, 77
reports from only seven users were collected; in the latter, the sole
six students involved collected 96 reports. It is thus clear that the
campaign for collecting potholes was largely unsuccessful, because
it did not reach a significant subset of Como citizens. More than 50%
of the data were collected by only two users, while the activity of
three other users stopped after the report of just one pothole.
Curiously, approximately ten citizens created an ODK account but
they never used it. As a result, the spatial distribution of the potholes
reports was largely biased by the contributions of the most
active users. Although achieved into a much smaller-scale application,
our results reflect those found for OSM (Mooney and Corcoran,
2012; Neis and Zipf, 2012) and are in an almost perfect agreement
with Nielsen’s (2006) 90:9:1 rule for participation inequality.
The importance of the number of users is evident by comparingthe results for the projects on potholes and architectural barriers. Inthe former, where all Como citizens were invited to participate, 77reports from only seven users were collected; in the latter, the solesix students involved collected 96 reports. It is thus clear that thecampaign for collecting potholes was largely unsuccessful, becauseit did not reach a significant subset of Como citizens. More than 50%of the data were collected by only two users, while the activity ofthree other users stopped after the report of just one pothole.Curiously, approximately ten citizens created an ODK account butthey never used it. As a result, the spatial distribution of the potholesreports was largely biased by the contributions of the mostactive users. Although achieved into a much smaller-scale application,our results reflect those found for OSM (Mooney and Corcoran,2012; Neis and Zipf, 2012) and are in an almost perfect agreementwith Nielsen’s (2006) 90:9:1 rule for participation inequality.
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