Hello Angela,

Your wiki page doesn’t describe your conflation process at all. You’ve even 
left the field in the template blank:

https://wiki.openstreetmap.org/wiki/Import/Catalogue/MassGIS_Addresses#Conflation
 
<https://wiki.openstreetmap.org/wiki/Import/Catalogue/MassGIS_Addresses#Conflation>

There are 156378 addresses on OSM in Massachusetts already, and you absolutely 
need a plan to handle those and not have duplicates.

Good luck with your import,

Guillaume

> On 30 Dec 2018, at 15:30, Angela Morley <[email protected]> wrote:
> 
> Hello everyone on imports@! I hope your holidays have been well thus far.
> 
> In Massachusetts, we've been working on an import to add address data to 
> buildings state wide based on MassGIS data. This has been no easy process, 
> and has many specific concerns which we've been working hard to address over 
> the last six months of development for this plan. We have come up with a 
> multiple phase-based import approach which we believe mitigates data issues 
> while providing high quality data to be imported.
> 
> As a background, we discovered MassGIS data on address parcels available 
> through the 911 data within the state. The raw data consists of points which 
> are located on top of the building centroids, as far as the state is 
> concerned where the buildings are. For multiple building properties, the 
> address point is located in the center of that property. This is workable, 
> but means the data has to be filtered between the two import phases to fix 
> the correlation between the two types of nodes.
> 
> We are seeking approval to import ONLY Phase 1 of our data at this time, 
> which is, addresses whereby the address point is linked 1:1 with a building, 
> where there is no ambiguity to which building carries that address. We will 
> conduct this import on a town-by-town basis split across three or more people 
> using JOSM to conflate the points into existing building structures.
> 
> In a future approval, we seek to refine our Phase 2 import to assign 
> addresses to multiple building properties. We are not sure on the exact 
> method of this import yet, whether it would be more appropriate to drop an 
> address marker POI on the map, or to try and use Conflation plugin to 
> guesstimate the closest building to the point, and use human interaction to 
> approve the move. Still being worked on, obviously, we would want the action 
> which has the least chance of errant data possible for the OSM dataset.
> 
> Without further ado, below is the wiki for our import process. We've already 
> sought local community discussion, and have received no additional concerns. 
> We look forward to your inspection of our process and feedback. Again, we are 
> only concerned with Phase 1 of the import at this time.
> 
> https://wiki.openstreetmap.org/wiki/Import/Catalogue/MassGIS_Addresses
> 
> Cordially,
> 
> Angela Morley,
>   with notable support of the other contributors to this project
> 
> 
> 
> 
> 
> 
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