Overall, TMO consists of sixteen truly independent ontologies which
do not have knowledge of one another.
Two further ontologies, called IF and XEBR2XBRL bring them together
through the use of interface axioms, using axiom constructors, such as
rdfs:subClassOf and owl:equivalentProperty, or by posing domain and range
restrictions on certain underspecified properties.
It is worth noting that across the ontologies, each property has been cross-classified as being either synchronic, i.e., property instances staying constant over time, or diachronic, i.e., changing over time (Krieger, 2010). This property characteristic can be used, amongst other things, to check the consistency of a temporal ABox or as a distinguishing mark in an entailment rule.
Even though ABox data (populated instances) usually come with a temporal extent, the TBoxes and RBoxes of the ontologies are not equipped with temporal information, thus still being represented as triples. For instance, we do not state that an URI represents a class at a certain time and a property at a different time. Or that a class is a subclass of another class for only some amount of time. Thus TBox and RBox of the integrated ontology represent universal knowledge that is true at any time, so there is no need to equip them with a fourth and fifth temporal argument. This quality gives rise to the use of ontology editors such as Protege for manually constructing the TBoxes and RBoxes of some of our ontologies.
It is worth noting that some of the sub-ontologies are multilingual in that classes, properties, and predefined instances are assigned multiple and multilingual labels or even longer definitions in different languages, making use of the annotation properties rdfs:label, skos:prefLabel, and skos:altLabel, together with an additional annotation property rdfs:definition.
The color encoding in the picture at left refers to ontologies focussing on models of people's private and public life (yellow), sentiment/opinion (purple), industry sector classification (green), stock exchange (brown rectangle), financial reporting (orange rectangle), financial instruments (blue), and interface (red).
As can be seen from the picture, some of the ontologies even model several aspects of a domain; e.g., DAX alone deals with industry sector classification, reporting, description of stock exchange listed information, and people who are either key executives or shareholders of a company.
|00||TMO: TrendMiner Ontology (imports all the below ontologies)||tmo.owl||tmo.nt||tmo.readme||2.1|
|02||CFI: Classification of Financial Instruments||cfi.owl||cfi.nt||cfi.readme||2.1|
|03||DAX: Deutscher Aktien Index||dax.owl||dax.nt||dax.readme||de, en||2.5|
|04||DC: Dublin Core||dc.owl||dc.nt||dc.readme||1.1|
|05||EN: NYSE Euronext||en.owl||en.nt||en.readme||1.3|
|06||GICS: Global Industry Classification Standard||gics.owl||gics.nt||gics.readme||de, en, es, fr, it, ja, ko, ru, zh-hans, zh-hant||1.1|
|07||ICB: Industry Classification Benchmark||icb.owl||icb.nt||icb.readme||de, en, es||1.2|
|08||IF: Interface (interlinks concepts & properties)||if.owl||if.nt||if.readme||2.3|
|09||LOGIC: Function-Free Modalized PL1 w/ GQ||logic.owl||logic.nt||logic.readme||1.2|
|10||NACE: Statistical Classification of Economic Activities in the EU||nace.owl||nace.nt||nace.readme||de, en, it||2.1|
|14||SKOS: Simple Knowledge Organization System||skos.owl||skos.nt||skos.readme||1.2|
|15||SOC: GESIS' TheSoz||thesoz.owl||thesoz.nt||thesoz.readme||de, en, fr||1.1|
|16||TIME: Temporal Property Characteristics||time.owl||time.nt||time.readme||1.2|
|17||XEBR: XBRL Europe Business Registers||xebr.owl||xebr.nt||xebr.readme||3.1|
|18||XEBR2XBRL: XEBR-to-XBRL Mapping||xebr2xbrl.owl||xebr2xbrl.nt||xebr2xbrl.readme||1.1|
|Work on the ontologies has been partly funded
by the following projects