User:Was a bee

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ja-N この利用者は日本語母語としています。
en-1 This user has basic knowledge of English.
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GeneWikidata-logo-en.png This user is a member of WikiProject Molecular biology.
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WikiProject Anatomy
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What kind of "relation" is used to construct tree in various ontologies[edit]

Relations (black arrows) connect items (blue dots) in certain manner.

In ontology, "relation" defines relationship of 2 items. Different items are connected by relation. Visually thinking, relation is corresponding to edge in graph (black arrows in the diagram at right). In Wikidata, for example, this data (Q42#P3373) connects different person in certain manner.

By collecting these relations, mesh (or tree) is constructed.


You can see their tree at here[1]. TA doesn't mention what kind of relation they indicate. They simply mentioning as "relationship".

Indenting and styles of heading are used to indicate the relationship of one term to another.
—TA documentation: TA User Guide Last revision: 5 october 2010 (pdf)

Cornelius Rosse (2001) state that TA hierarchical structure indicates "various relationships." He said the relationship is sometimes "is a", and sometimes "has part of".

A hierarchy of headings is presented through the use of different fonts and varied shading of the panels in which the headings appear. Combined with indentations in the list, these headings have the potential for representing various relationships between the terms.
—Rosse C (2001) Terminologia anatomica: considered from the perspective of next-generation knowledge sources. (pdf)


FMA would be the most sophisticated human anatomy ontology. They uses various properties including relationships. Their philosophy is explained briefly at here[2]. As of Oct. 2017, they uses 168 properties[3].You can see whole list at here[4]. Among them, they draw tree based on <superclass ↔ subclass> relations.

In official browser, following 4 relations are used as basic component of the interface.

In Mejino JLV (2003), they explains about the regional/constitutional part relations as follows.

Constitutional part is a primary partition of an anatomical structure into its compositionally distinct anatomical elements. In the context of the whole, an element is any relatively simple component of which a larger, more complex anatomical structure is compounded; i.e., the partition is compositional rather than spatial.

Regional part is a primary partition that spatially subdivides an anatomical structure into sets of diverse constitutional parts that share a given location within the whole; i.e., the partition is spatial rather than compositional. Entities in all subclasses of Anatomical structure have both constitutional and regional parts
—Mejino JLV, et. al. Representing Complexity in Part-Whole Relationships within the Foundational Model of Anatomy. AMIA Annual Symposium Proceedings. 2003;2003:450-454. (PMC)


UBERON uses various properties including relationships. Its philosophy is explained briefly at here[5]. As of Oct. 2017, they uses 220 properties[6].You can see whole list at here[7]. Among them, it seems that UBERON drawing tree based on <part ofhas part> relations.

MeSH tree[edit]

MeSH makes hierarchical tree basically for convenience for users. They don't define in strict sense what kind of hierarchy it is. There are brief explanation about MeSH tree at here[8] or here[9]. Following is excerpt.

These trees should not be regarded as representing an authoritative subject classification system but rather as arrangements of descriptors for the guidance and convenience of persons who are assigning subject headings to documents or are searching for literature.


Each MeSH descriptor appears in at least one place in the trees, and may appear in as many additional places as may be appropriate.

MeSH Tree Structures Last updated: 06 December 2016


NeuroNames draw single hierarchical tree based on <superstructure ↔ substructure> relation, like this[10], this[11] or this[12]. Brief explanation about the tree is here[13] and here[14]


NeuroLex creates tree through "is a" relationship. Following is excerpt from FAQ.

NeuroLex was designed as a single tree hierarchy, that is, a given category has one and only one parent category (super category) and one or more children categories. A category is related to its parent and children through a "is a type of" relationship, also called an "is a" relationship. So, a Neuron "is a type of" Cell; a "Purkinje cell" is a type of" Neuron.


Tree test[edit]

By using Template:Tree, we get the following tree automatically.


Starting from human chromosome 1 (Q430258), tracking through followed by (P156)


Starting from Alan Mathison Turing (Q7251), tracking through doctoral advisor (P184)


Starting from Alphabet Inc. (Q20800404), tracking through subsidiary (P355)


Starting from John F. Kennedy (Q9696), tracking through killed by (P157)


Starting from Amazon (Q3783), tracking through tributary (P974)