[OSM-legal-talk] Fwd: ODbL for publications comparing OSM with a reference dataset

Richard Fairhurst richard at systemeD.net
Sun Aug 21 10:25:51 BST 2011

[second forwarded message -- Richard, legal-talk admin]

Hello again,

for one more use case I would like to get your oppinion regarding the 
ODbL. Your answers are relevant for our research, and could be relevant 
for  Muki Haklay and others who compare OSM with other reference 
datasets to analyse the quality, like completeness of objects and 
thematic attributes, locational precision, correctness of thematic 

Use case "Publication on the quality of OpenStreetMap relative to a 
reference set"

A publication assesses the quality of the OSM road network by matching 
the OSM objects with those of another road network, the reference set, 
and then compares the matching objects. The document contains a thematic 
OSM map, where the style (colour, breadth, …) of the OSM roads 
visualizes a compared quality.  The publication could also contain 
charts and other maps where the quality is displayed on grid cells.

Is it correct that only the thematic map with OSM road objects is a 
produced work? So only the small table containing the identifiers of the 
visible OSM road objects and their quality is a derivative database? And 
is this table insubstantial  so that it need not be provided under ODbL?
In particular, underlying our publication is a much bigger table that 
contains a matching between the identifiers of the two road networks, as 
well as their attributes, which are to be compared, e.g. road category, 
name, speed limit, oneway, pedestrian? Is it true that this table need 
not provided together with the publication?

Once more, thank you for your comments,
angi voss

Dr. Angi Voss
Fraunhofer IAIS
Knowledge Discovery
Schloss Birlinghoven
D-53754 Sankt Augustin

phone:    02241 / 142726
Fax:      02241 / 42726

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