A common feature of taxonomies is the hierarchical relationship between terms. Terms are linked to each other in a relationship that indicates that one is the broader term (BT) of the other, and in the other direction, one is the narrower term (NT) of the other. You don’t need to…
Category: Hierarchical taxonomy
Taxonomy Hierarchy Levels
A taxonomy comprises a hierarchy of concepts (terms), and those hierarchies can be considered to be in different levels. In actuality, levels are somewhat artificial, and its important not to think of levels too strictly. In some taxonomies the levels are even named (for example: Domain, Category, Subcategory, Topic), but…
Taxonomy Term Specificity
One of the challenges in creating or editing taxonomies is determining how specific the terms should be. This is a key issue in making a taxonomy customized for a certain implementation, which involves a unique set of content to be tagged/indexed and a certain set of users. Highly specific terms tend…
Avoiding Mistakes in Taxonomy Hierarchical Relationships
Perhaps the most important issue in designing a hierarchical taxonomy is creating hierarchical relationships between terms correctly. This makes the taxonomy intuitively easy to understand and navigate by all kinds of users, regardless of whether they have had any training on using a taxonomy. The basic principles of the hierarchical…
Taxonomies vs. Thesauri: Practical Implementations
The differences between taxonomies and thesauri and when to implement which has been a subject of previous presentations of mine and a previous blog post, Taxonomies vs. Thesauri. Most recently, a presentation of a case study of controlled vocabularies at Cengage Learning, which I gave at the “Taxonomy Café” session…
Polyhierarchy in the SharePoint Term Store
Last year I had the opportunity to create some taxonomy in the SharePoint Term Store (also called Managed Metadata), and while I am pleased that hierarchical taxonomies are supported in this widely used platform, I had some concerns about the support of polyhierarchy, as information about this capability is inconsistent.…
Taxonomies and Tables of Contents
A table of contents and a hierarchical taxonomy appear to be quite similar. In my last blog post I looked at taxonomies and indexes, and in the end concluded: “A taxonomy serves a purpose that is both, or something in-between, that of a table of contents and a back-of-the-book index.…
Trends in Hierarchical Taxonomy Displays
Taxonomies connect users to content. So, how a taxonomy is displayed to users is very important in its effectiveness. This is a topic about which I gave a conference presentation back in 2011 and will present again next week. As I update my previous presentation, looking at some of the…
One or More Taxonomies
In the various definitions of taxonomy, one aspect of the definition that is often missing is what constitutes a single taxonomy (or thesaurus) versus multiple related taxonomies (or thesauri). If you hire a taxonomy consultant, they won’t tell you because they will defer to their client’s terminology. If you are…
Taxonomies vs. Thesauri
Two taxonomy consulting projects I worked on last year seemed to lend themselves more to the development of a thesaurus than a set of hierarchical taxonomies. But clients usually ask for a taxonomy and not a thesaurus. Perhaps we need to ask what is in mind with the notion of…