The absence of clarity concerning the licensing terms does not encourage the reuse of the data by the consumers, thus preventing further publication and consumption of datasets, at the expense of the growth of the Web of Data itself. We propose a general framework to attach the licensing terms to the data queried on the Web of Data. In particular, our framework addresses the following issues: (i) the various license schemas are collected and aligned taking as reference the Creative Commons schema, (ii) the compatibility of the licensing terms concerning the data affected by the query is verified, and (iii) if compatible, the licenses are combined into a composite license. The framework returns the composite license as licensing term about the data resulting from the query.

1. Serena
Villata
and
Fabien
Gandon
Inria
Sophia
An4polis

2. OUR GOAL
Attach the licensing terms to the data under
the form of a composite license
Licenses
Compa.bility
Evalua.on
QUERY RESULT +!
<link URI_CompLic>! Composite
License
Genera.on
SELECT … !
WHERE {…}!
2

3. ENABLING TECHS
Named Graphs Creative
Commons
Licenses are constraints Licenses anatomy defined
over named graphs following CC schema
RDF Query result
Machine-readable format XML format using the
for obligations, permissions <link> element
and requirements

4. MAIN FEATURES
Pluggable to Granularity: from
any RDF store triples to whole graphs
Composite Semantic Web
license for the languages only
query result

5. LICENSES STRUCTURE
CC LICENSES ANATOMY
Permissions
Reproduction
Distribution
Derivative Works
Sharing
Prohibitions
Commercial Use
Requirements
Notice
Attribution
Share Alike

6. ALIGNMENT LICENSES

7. 1. :ng1 !
LICENSES :ng2 !
COMPATIBILITY :ng3 !
SELECT … !
EVALUATION WHERE {…}!
2.
LICENSES
COMPOSITION
3.
QUERY
RESULT

8. 1. :ng1 !
LICENSES :ng2 !
COMPATIBILITY :ng3 !
SELECT … !
EVALUATION WHERE {…}!
2.
LICENSES
COMPOSITION
3.
QUERY
RESULT

9. 1.
LICENSES
COMPATIBILITY
Heuristics
EVALUATION OR-composition
AND-composition
Constraining-value
2.
LICENSES
COMPOSITION
3.
QUERY
RESULT

10. 1.
LICENSES
COMPATIBILITY
EVALUATION
2.
LICENSES
COMPOSITION
QUERY RESULT +!
<link URICompositeLic>! :ng1 !
:ng2 !
3. :ng3 !
QUERY
RESULT

11. EXAMPLE

12. EXAMPLE

13. EXAMPLE
MODELS ELEMENTS

14. FUTURE WORK
Legal evaluation of the Qualitative
composite license evaluation
Relate non CC licenses to Quantitative
CC licenses in a legal way evaluation