Economists Online and ODaP have similar goals. Although the scope of Economists Online is broader than that of ODaP, but both aim at linking Open Access publications and the corresponding data. Economists Online is doing this for a specific discipline, economics and the scope is international. In ODaP the scope is that of a specific university, Tilburg University, but is broader than only economics. Economists Online and ODaP have each their own dataverse. The label of the dataverse for Economists Online is NEEO = Network of European Economists Online. And the label of the Dataverse of ODaP is TU = Tilburg University. Within the NEEO dataverse there are collections defined for each university that is contributing to Economists Online. The collection of the TU dataverse correspond to the Schools of Tilburg University.
There is a overlap between the NEEO and the TU dataverses. We decided that the NEEO collection for Tilburg University and the TU collection for the Tilburg School of Economics and Management (TISEM) will have the same content. It is not efficient to describe the same datasets twice. To avoid this we have defined the TISEM collection to be dynamic: its content is determined dynamically by a search in DVN. The Dataverse Network system has three types of collections: static, dynamic and linked collections. http://thedata.org/book/manage-collections defines the three types as follows:
- Static collection – You assign specific studies to this type of collection.
- Dynamic collection – You can create a query that gathers studies into a collection based on matching criteria, and keep the contents current. If a study matches the query selection criteria one week, then is changed and no longer matches the criteria, that study is only a member of the collection as long as it’s criteria matches the query.
- Linked collection – You can link an existing collection from another dataverse to your dataverse homepage. Note that the contents of that collection can be edited only in the originating dataverse.
At the moment we have defined the NEEO collection for Tilburg University as a static collection and the TU collection for TISEM as a dynamic collection. Originally the query that defined the TISEM collection was:
relatedPublications:”wo.uvt.nl”
The reason for this was that the permalinks to publications of Tilburg University contain the string wo.uvt.nl. Searching for this string in the element relatedPublications would find all the studies in the NEEO collection for Tilburg University. Example, the study with handle hdl:1902.1/12892 has two permalinks in the relatedPublications element:
By adding permalinks to its description it is possible to link a dataset to the search systems in which the related publication can be found. In this example, both permalinks use the same oai-identifier oai:wo.uvt.nl:3125512 because the link is to the same repository record that is included in two different search systems. wo.uvt.nl is unique for the oai-identifiers of the Tilburg University Repository. However, this query is too broad for collecting the records of TISEM because it not only finds the Tilburg University records in the NEEO dataverse, but also the records in the other collections in the TU dataverse and even records in other dataverses.
We had to redefine the query. The query must indicate something that is unique for the Tilburg records in the NEEO dataverse. The string wo-tilburguniversity-nl is the first part of the identifiers of the Tilburg records in Economists Online. The idenfiers of the repository records in the local search system starts with ir-uvt-nl. The new query defining the TISEM collection has become:
relatedPublications:”wo-tilburguniversity-nl”
We have considered to link to the TISEM collection from the NEEO dataverse. The TISEM collection of the TU dataverse becomes the static source collection for the linked Tilburg University collection in NEOO. However linked collections are not integrated into the collections tree of a dataverse as static and dynamic collections are. Linked collections are at the same level as the root collection of a dataverse. This makes linked collections less attractive for our purposes.
In the present situation the economic datasets are handled in the NEEO dataverse and the other Tilburg datasets are handled in the TU dataverse. This is confusing for information specialists who has to change to another dataverse in the case of a economic dataset (and back for a non-economic dataset). So it would be more convenient to make the TU dataverse the origin of all Tilburg datasets. In this proposal the Tilburg collection in the NEEO dataverse becomes a dynamic collection that is filled (dynamically) with studies from the TISEM collection in the TU dataverse. The query of the dynamic collection in the NEEO dataverse would be: relatedPublications:”wo-tilburguniversity-nl”
There is a another issue that relates to the fact that the same publication has more than one record in a search system because the publication is described in several sources that is used by the search system. This will be the topic of a next blog.
