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This ontology provides the core OBOE modeling constructs.
A class annotation property that states that the annotated class is conceptually the same class as (i.e., conceptually equivalent to) the concept identified in the annotation value. If the value of the annotation property denotes an OWL class, then the sameConceptAsClass annotation property should be used instead.
A class annotation property that states that the annotated class is conceptually the same class as (i.e., conceptually equivalent to) the referenced class (as given by the value of the annotation property). Note that being conceptually the same can differ from strict class equivalance in that the two classes may have different structural definitions within their specific ontologies, e.g., their superclasses and subclasses in the respective ontologies may differ.
A class annotation property that states that the annotated class is conceptually similar (e.g., overlapping), but not identical to the concept identified by the value of the annotation property. If the value of the annotation property denotes an OWL class, then the similarConceptAsClass annotation property should be used instead.
A class annotation property that states that the annotated class is conceptually similar (e.g., overlapping), but not identical to the referenced class (the value of the annotation property).
The characteristicFor property gives the entity of the characteristic.
characteristic for
The containsMeasurementsOfType property gives the MeasurementType to which measured values in some container belong. The domain is unrestricted to allow the property to be used to annotate any containers holding measured values, but its range is restricted to only subclasses of MeasurementType. If, for example, an attribute containsMeasurementsOfType "AirTemperatureType", then one can infer that the values in that attribute all represent measures of the associated Characteristic (e.g., Temperature) of the associated Entity (e.g., Air), or whatever constraints are imposed in the definition of the MeasurementType.
contains measurements of type
The entityRelated property asserts that the entity of one observation has an observed relationship to the entity in another observation.
entity related
The hasBaseQualifier together with the hasNextQualfiier property allows qualifier characteristics to be combined and ordered. For example, for an MinimumDailyAverage qualifier, the hasBaseQualifier refers to Minimum and the hasNextQualifier refers to a DailyAverage qualifier, and for a DailyAverage qualifier, the hasBaseQualifier refers to a Daily qualifier and the hasNextQualifier refers to an Average qualifier.
has base qualifier
The hasContext property asserts that one observation serves as the context for another observation. In a hasContext property the domain is the observation being contextualized and the range is the context. Context defines a semantic relationship between two entities that is a fundamental aspect of the observations, but not necessarily of the entities themselves. For example, most measurements are accomplished in a spatio-temporal framework that might be valuable context. The assertions made by contextual observations are assumed of the contextualized observations. Context is a transitive relationship.
has context
The hasMeasurement property gives the measurements of the observed entity.
has measurement
The hasMember property gives the observations of an observation collection.
has member
The hasNexQualifier together with the hasBaseQualfiier property allows qualifier characteristics to be combined and ordered. For example, for an MinimumDailyAverage qualifier, the hasBaseQualifier refers to Minimum and the hasNextQualifier refers to a DailyAverage qualifier, and for a DailyAverage qualifier, the hasBaseQualifier refers to a Daily qualifier and the hasNextQualifier refers to an Average qualifier.
has next qualifier
The hasObservedRelation property gives the observed relation of an observation. The observation entity is the source (head) entity of the corresponding relationship that was observed.
has observed relation
The hasQualifier property assigns an optional characteristic qualifier to a characteristic. Examples of qualifiers are Average, Minimum, Maximum, Daily, etc.
has qualifier
The hasSourceUnit property gives the source unit being converted from within a unit conversion.
has source unit
The hasTargetUnit property gives the target unit being converted to within a unit conversion.
has target unit
The hasUnit property gives the underlying base or derived unit for a derived or composite unit, respectively.
has unit
The hasValue property gives the value of the measurement.
has value
The measurementFor property gives the observation (observed entitiy) that a measurement is associated with. Each measurement is for exactly one observation.
measurement for
The measuresCharacteristic property gives the Characteristic that would be measured by a MeasurementType.
measures characteristic
The measuresEntity property gives the Entity that would be measured by a MeasurementType.
measures entity
The measuresUsingProtocol property gives the Protocol that would be used by a MeasurementType.
measures using protocol
The measuresUsingStandard property gives the Standard that would be used by a MeasurementType.
measures using standard
The ofCharacteristic property gives the entity characteristic measured by a measurement.
of characteristic
The ofEntity property gives the observed entity of an observation.
of entity
The usesProtocol property gives the protocol used in a measurement.
uses protocol
The usesStandard property gives the standard (e.g., unit) used in a measurement.
uses standard
The hasCode property gives the underlying value (or coded representation) of a primitive value.
The hasMultiplier property gives the multiplier value in a unit conversion.
The hasOffset property gives the offset value in a unit conversion.
The hasPower property gives the power a base unit is raised to within a derived unit.
This property gives the precision of a measurement value.
The usesMethod property gives the actual method used to carry out the measurement.
A base qualifier denotes a simple, atomic qualifier such as average, minimum, and maximum.
Base Characteristic Qualifier
A base unit is a unit that is not naturally decomposed into other units.
Base Unit
A characteristic represents a property of an entity that can be measured (e.g., height, length, or color). A characteristic of an entity is observed through a measurement, which further asserts a value of the characteristic for the entity. A characteristic type (e.g., "height") can be associated with many different entities, whereas an individual characteristic (a particular occurrence of the "height" characteristic) is associated to exactly one entity.
Characteristic
A characteristic qualifier is a derived property of an entity that must be combined with concrete characteristics to be used in a measurement. A qualifier is either a base (atomic) or composite qualifier. As an example, the base qualifier minimum can be combined with a characteristic length to create a minimum length qualified characteristic. A composite qualifer is used to combine multiple qualifiers.
Characteristic Qualifier
A composite qualifier combines multiple qualifiers. Each composite qualifier has a base qualifier and a reference to another qualifier. Composite qualifiers are ordered (through hasNextQualifier) to distinguish between the scope of qualifiers, e.g., AverageMinimum versus MinimumAverage.
Composite Characteristic Qualifier
A composite unit is the product of at least two base or derived units. For example, 'meter per second square' denotes a composite unit defined over 'meter' (a base unit) and 'per second square' (a derived unit).
Composite Unit
A derived unit raises a base or prefixed unit to an integer power other than 0 or 1. For example, the unit 'square meter' is a unit derived from the 'meter' base unit raised to the power 2. As another example, a 'square centimeter' is a unit derived from the 'centimeter' prefixed unit raised to the power 2. BRL 20160601: I removed this restriction so that CompositeUnits like XXXPerLiter would not reason to owl:Nothing. hasUnit exactly 1 (BaseUnit or PrefixedUnit)
Derived Unit
An entity is an object (e.g., a tree, a community, an ecological process). Entities constitute the foci of observations, i.e., every observation is of exactly one entity.
Entity
An identifying characteristic is used to identify or name an entity either globally or within a context, such as a name of a lake or a tag number assigned to a tree. Unlike a MeasuredCharacteristic, an IdentifyingCharacteristic is assigned and not measured.
Identifying Characteristic
A measured characteristic of an entity is one that is measurable within the physical world. A measured characteristic includes primary and derived physical dimensions (e.g., length, mass, area, density). The measured value assigned to a measured characteristic may be a quantity (a numerical value) or a quality (a category), including both nominal and ordinal categories.
Measured Characteristic
A measurement value is a quantitative or qualitative result of a measurement. Measurement values can contain a coded representation of the result, e.g., as a number or string.
Measurement Value
A measurement is an assertion that a characteristic of an entity had a particular value with respect to an observation event. A measurement is comprised of a characteristic, a value, a measurement standard, and a protocol. Measurements can also have precision as well as a description of the methods used. Measurements can encapsulate characteristics that were recorded, but not necessarily measured in a physical sense. For example, the name of a location and a taxon can be captured through measurements.
Measurement
A MeasurementType describes the type of a Measurement in which the Measurement would follow the associated Protocol to record the value of the associated Characteristic of the associated Entity using the associated Standard. Any of these associated properties may be omitted, in which case the MeasurementType is only constrained by the provided associations. A MeasurementType is a hypothetical construct, in that it is not associated with a particular instance of a Measurement.
Measurement Type
An observation is an assertion that an entity (e.g., biological organisms, geographic locations, or environmental features, among others) was observed by an observer. An observation primarily serves to group a set of measurements together into a single "observation event". Observations are often made within a broader context. The context of an observation is given by other observations, implying that an observed entity (and specifically each corresponding measurement) contextualizes another observed entity (and its corresponding measurements). For example, an observation associated with a location may serve as context for an observation associated with an organism. In this case, the observed characteristic values of the location (such as humidity) are assumed constant for the corresponding measurements of the organism.
Observation
An observation collection is a container for a set of observations.
Observation Collection
A prefixed unit consists of a base unit and a prefix integer value that serves as a multiplier. For example, a centimeter is a prefixed unit that combines a meter base unit and the prefix multiplier 0.01 such that one centimeter is equivalent to 0.01 meters.
A protocol is a procedure for generating or processing data.
Protocol
A standard defines a reference for comparing or naming entities via a measurement. A standard can be defined intentionally (e.g., as in the case of units) or extensionally (by listing the values of the standard, e.g., for color this might be red, blue, yellow, etc).
Standard
A unit is a standard quantification for physical measurements. A unit is either a base unit, a composite unit, or a derived unit.
Unit
A unit conversion is a mapping from a source unit to a target unit via a multiplier and an offset value.
Unit Conversion