SignalKG Ontology

An Action that can be performed by an Entity (e.g., break window)

• skg:actsOn ^dp
• skg:creates ^op
• skg:prOccurs ^dp

• skg:actionCategory ^op
• skg:performs ^op

A procedure or machine learning model for detecting the presence of a signal

A concrete realisation/occurrence of an Action (e.g., breaking a particular window at a particular time)

• skg:actionCategory ^op
• skg:concreteActsOn ^op
• skg:endState ^op
• skg:endTime ^dp
• skg:startState ^op
• skg:startTime ^dp

A concrete realisation/occurrence of an Entity (e.g., a particular person)

• skg:concreteProduces ^op
• skg:entityCategory ^op

An Entity capable of performing some Action (e.g., humans)

• skg:performs ^op
• skg:prExists ^dp

Falloff of signal strength as a function of distance (e.g., an inverse square law)

A Signal category (audio, vision, social, etc.) or sub-category (e.g., the sound of footsteps) that is created by some Action and is observable by some Sensor

• skg:attenuatedBy ^dp
• skg:fallOff ^op

A category of Action that a ConcreteAction is a realisation/occurrence of

A particular object/place that a ConcreteAction is performed on/in (e.g., a particular window)

A ConcreteAction that a ConcreteEntity performs (e.g., breaking a particular window at a particular time)

A Signal that an Action creates

The state of a ConcreteEntity after performing a ConcreteAction (e.g., new position)

A category of Entity that a ConcreteEntity is a realisation/occurrence of

The falloff of signal strength as a function of distance (e.g., inverse square law)

An Action that an Entity is capable of performing

The state of a ConcreteEntity before performing a ConcreteAction (e.g., initial position)

A class of object/place than Action can be performed on/in (e.g., windows). Range should be owl:Class, but for OWL-DL conformance only xsd:anyURI constraint is specified.

A class of object than attenuates a category of Signal (e.g., walls attenuate sound signals). Range should be owl:Class, but for OWL-DL conformance only xsd:anyURI constraint is specified.

The time at which a ConcreteAction finishes

The field of view of a Sensor (in radians)

The probability of the Entity being present (e.g., of an attacker)

The probability of an Entity (if present) performing an Action (e.g., the probability that an attacker will chose to break in via the window rather than by some other method)

The distance at which a Sensor is expected to operate reliably (beyond this distance the probability of detection decreases with signal strength)

The sensitivity (true positive rate) of a machine learning Classifier (when operating within the reliable distance of the Sensor)

The time at which a ConcreteAction begins