Licensing

Goals

• Encourage the broad use of DeepPhe tools and models, while maintaining openness and attribution.
• Comply with resource sharing plan as submitted to NIH. See, for example [ITCR policies](http://itcr.nci.nih.gov/about-itcr)

Distinction

We are reading "software" as referring to executable components, while "models" refers to the OWL data models developed for representation of cancer phenotypes.

Licensing of Software

• cTAKES is licensed under the Apache Source License 2.0
• DeepPhe cTAKES components will be similarly licensed
• Other DeepPhe components will be licensed by some open source license, potentially (but not necessarily) the Apache license.

Licensing of Other Models

• List of non-software licenses -- https://en.wikipedia.org/wiki/List_of_free_content_licenses
  • Licensing for content are appropriate
• Principles
  • receive credit for what we do
  • allow other people to contribute (not just take it and use it) -> share alike
• Creative Commons
  • Creative Commons does not recommend the use of Creative Commons licenses for software.
  • https://en.wikipedia.org/wiki/Creative_Commons_license
  • CC BY 2.0 - https://creativecommons.org/licenses/by/2.0/
    • you are free to share and adapt when you give attribution (You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.)
  • CC BY 3.0 - http://creativecommons.org/licenses/by/3.0/
  • is it compatible with Apache license?
    • CC BY 2.5 and 3.0 are in Category B - http://www.apache.org/legal/resolved.html
    • Unmodified media under the Creative Commons Attribution-Share Alike 2.5 and Creative Commons Attribution-Share Alike 3.0 licenses may be included in Apache products, subject to the licenses attribution clauses which may require LICENSE/NOTICE/README changes. For any other type of CC-SA licensed work, please contact the Legal PMC.
  • CY BY 4.0 http://creativecommons.org/licenses/by/4.0/
    • is it compatible with the Apache license? We believe so.. see [this thread](http://apache.markmail.org/search/?q=legal-discuss#query:legal-discuss%20order%3Adate-backward+page:1+mid:3whmjdfqnvukcg2s+state:results)
• Open Content
  • https://en.wikipedia.org/wiki/Open_Content_License -- The Open Content License is a share-alike public copyright license which can be applied to a work to make it open content. This license is not compatible with any other license in that it requires derivative works to be licensed under the Open Content License.
  • probably not compatible with Apache.
• Art Libre
  • https://en.wikipedia.org/wiki/Free_Art_License - a copyleft license that grants the right to freely copy, distribute, and transform creative works without the author's explicit permission

DeepPhe Ontology Models

• DeepPhe Ontology models will be licensed using CC-BY 4.0
• This is consistent with plans to use CC-BY 4.0 to license the schema ontology upon which the DeepPhe model is based.