Enhanced with SHOE


Measurement Ontology (draft)

Id:measure-ont
Version:1.0
Description:This ontology defines types of measurement units. Please send any comments or suggestions to the contact listed below. This is a draft ontology and may change at any time.
Contact:Jeff Heflin (heflin@cs.umd.edu)
Revision Date:03 Apr 2000

Organization of this Document

This ontology is declared in this document both in human-readable form (what you see in front of you now) and machine-readable SHOE form (which you can see from viewing the html source of this document). The rest of this document is divided into the following sections:


Extended Ontologies

The following ontologies are extended by the current ontology:


Renames

An ontology may rename elements from another ontology in order to provide a shortcut for referencing that element or to provide an alternate term for it.

This ontology has not renamed any elements.


Categories

The following taxonomy is the collection of categories declared in this ontology. The hierarchical form is intended to show the ISA chain. Categories in [Brackets] are not defined here but are defined in an ontology extended by this one. Elements in {Braces} are additional supercategories of the category immediately before them (signifying multiple inheritance). Categories followed by an asterisk are defined in another ontology but are provided with a local alias.

   [base.SHOEEntity]
      MeasurementUnit
         LengthUnit
	 TimeUnit
	 VolumeUnit
	 WeightUnit

Relationships

Relationships are declared between one or more arguments, where each argument is either a type or a category. If the argument is a category, any subcategory of that category is valid as well. Relationships which have a local alias but are defined in another ontology are followed by an asterisk.

No relationships are defined.


Constants

Constants are used to identify instances that may be commonly used with an ontology. In this section, each constant is grouped under its category.

   LengthUnit:
      MM
      CM
      M
      KM
   TimeUnit:
      SEC
      MIN
      HOUR
      DAY
      MONTH
      YEAR
   VolumeUnit:
      MM^3
      CM^3
      M^3
   WeightUnit:
      GRAM
      KG

Inferences

Inference rules are used to determine what additional facts can be implied if other facts are known. They take the form of if/then rules.

No inference rules are defined.


Definitions

CM
Centimeter
CM^3
Cubic centimeter
DAY
Day
GRAM
Gram
HOUR
Hour
KG
Kilogram
KM
Kilometer
LengthUnit
A unit for measuring length.
M
Meter
M^3
Cubic meter
MIN
Minute
MM
Milimeter
MM^3
Cubic millimeter
MONTH
Month
SEC
Second
TimeUnit
A unit for measuring time.
VolumeUnit
A unit for measuring volume.
WeightUnit
A unit for measuring weight.
YEAR
Year

Notes:


Change History:


Enhanced with SHOE