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https://jira.duraspace.org/browse/DS-1247?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kevin Van de Velde resolved DS-1247.
------------------------------------
Resolution: Fixed
This contribution was merged into git together with the other @mire
improvements in the following pull request:
https://github.com/DSpace/DSpace/pull/45
> World Bank Discovery improved taxonomies (implemented by @mire)
> ---------------------------------------------------------------
>
> Key: DS-1247
> URL: https://jira.duraspace.org/browse/DS-1247
> Project: DSpace
> Issue Type: Improvement
> Affects Versions: 3.0
> Reporter: Kevin Van de Velde
> Assignee: Kevin Van de Velde
> Fix For: 3.0
>
> Attachments: Figure 1.png, Figure 2.png, Figure 3.png
>
>
> The World Bank uses predefined hierarchies for topics, document types, etc.
> @mire has ported the controlled vocabularies (taxonomies) functionality to
> the XMLUI, to represent these hierarchies. In addition, World Bank needs to
> be able to optimally use these taxonomies as facets in Discovery. This
> includes several challenges, such as when the hierarchical tree changes over
> time (values are added, others removed or moved), situations can arise where
> items contain hierarchical values which do no longer exist in the current
> hierarchical tree.
> The World Bank is contributing the functionality for using taxonomies as
> facets in Discovery.
> In DSpace 1.8 the search facets taxonomy values are listed sorted by the
> number of items with that exact taxonomy value, regardless of where they are
> in the tree. (Fig 1.).
> But this creates a problem as is displayed on Fig. 2
> In DSpace 1.8, the taxonomy facet:
> * Lists topics at any level of the tree next to each other
> * Shows number of items that are associated with one particular node in the
> tree
> Problem:
> * This does not take hierarchical structure of the taxonomy into account
> * This is counter-intuitive: when you filter by a topic, items related to
> subtopics are not displayed
> @mire has implemented an Improved taxonomy facet (Fig 3), contributed by the
> World Bank:
> * Only lists topics at the top level of the tree in the navigation bar
> * Shows number of items that are associated with top level topic and any of
> its sub-topics
> * If item contains multiple topics that have the same parent topic, the
> parent topic is counted only once
> * Intuitive: when you filter by a topic, items related to subtopics are
> automatically included
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