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README.md

@@ -8,15 +8,49 @@ records and provide tips for improving it.
 - PuQI
 
 PuQI (class `MDPuqi`) generates a score determining the quality of object metadata
-based on e.g. counting linked entries.
+based on e.g. counting linked entries, checking the length of an object's description,
+and more.
+Along with the score, a list of tips is generated to describe how to improve the
+metadata quality in a human-readable form.
 
-## Plausi
+### Plausi
 
-Plausi analyzes an object's linked events (e.g. production, use) and identifies
+Plausi analyzes an object's linked events (e.g. production, use, etc.) and identifies
-logical inconsistencies.
+logical inconsistencies. A warning may e.g. be returned, if:
+
+- the stated artist of an artwork has died before the stated time of creation of the object.
+- events contradict each other, such as a usage of the object supposedly taking place before
+  the object was created.
+
+###  Plausibility Check for Image Licenses
+
+This check analyses an object's event and image metadata to check for potential licensing issues.
+E.g., an object that has been created by people who have not lived since the 1800s, many
+jurisdictions automatically retire copyright on the object and purely documentary photographies
+thereof. Hence, a warning will be returned if such an object's representations are not marked
+as in the public domain.
+
+Similarly, almost all jurisdictions protect the works of living authors / artists. If the object's
+creator can thus be identified as still alive or only recently deceased, while the object's
+representations are licensed under a permissive license or marked as in the public domain,
+a warning will be returned. Obviously, this means that warnings are returned even where the
+actual artist licensed their works under a Creative Commons license. The plausibility check for image
+licenses should hence *NEVER be used for fully automated editing*.
+
+Optionally, a list of creators represented by copyright collectives may be provided. If
+such a creator can be identified among the object's creators, the returned warning will
+contain an additional notice about the creator being represented by one along with tips
+on how to get in contact with the copyright collective.
 
 ## Publications
 
 ### PuQI
 
-Rohde-Enslin, S. (2015). PuQI – A Smart Way to Create Better Data. Uncommon Culture, 6(2), 122-129. <https://uncommonculture.org/ojs/index.php/UC/article/view/6218>
+- Rohde-Enslin, S. (2014). "PuQi - Eine Versuchung." Paper presented at the Autumn Seminar of the Working Group Documentation of the German Museum Association, 2014 (Herbsttagung der FG Dokumentation des Deutschen Museumsbunds). <https://files.museum-digital.org/de/Praesentationen/2014-10-06_PuQI-Eine-Versuchung_SRE.pdf>
+- Rohde-Enslin, S. (2015). PuQI – A Smart Way to Create Better Data. Uncommon Culture, 6(2), 122-129. <https://uncommonculture.org/ojs/index.php/UC/article/view/6218>
+- Rohde-Enslin, S. (2021). "PuQi – Verführung zu Qualität." museum-digital:blog, <https://blog.museum-digital.org/de/2021/01/22/ein-publikations-qualitaets-index-fuer-museumsobjektinformationen/>
+
+### Plausi
+
+- Rohde-Enslin, S. (2017). "Plausi - PuQI hat einen Freund bekommen." Paper presented at the Autumn Seminar of the Working Group Documentation of the German Museum Association, 2017 (Herbsttagung der FG Dokumentation des Deutschen Museumsbunds). <https://files.museum-digital.org/de/Praesentationen/2017-11_Plausi-FG-Doku-Berlin_SRE.pdf>
+