1 / 19

Relations

Relations. ORION Active Structure. What Is A Relation. A relation can be an abstract family relation - He is my cousin - the relation seems to be separate from the thing, but it can just as easily seem to be the thing.

azriel
Télécharger la présentation

Relations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Relations ORION Active Structure

  2. What Is A Relation A relation can be an abstract family relation - He is my cousin - the relation seems to be separate from the thing, but it can just as easily seem to be the thing. A car isn’t a heap of spare parts - one of its necessary components is an assembly relation over all the other components, with each of those having an assembly relation over their components, to make them what they are This way, relations become indistinguishable from objects - they are the objects

  3. Relation Connections This functions as the object Logical Object1 Relation Two synchronised existence connections Object2 Existence A Relation has a minimum of four connections that can be either input or output Predicate, Boolean, Existence and Time logic are used simultaneously to represent the interaction of relations - Existence and Logical values are partially dependent on each other

  4. Assertion Logical Object1 Relation Object2 Existence Setting all inputs to True/Exists asserts the Relation exists and is true Sometimes a relation is false - “not to exceed”

  5. Test Logical Object1 Relation Object2 Existence • Setting one or more inputs to MayExist allows querying of the Relation: • Who owns this car • Does John own this car • How long has John owned a green car • What Relation exists between John and this car

  6. Relations and Things Thing Entity Relation State John Run Hot A Relation is not an Entity, but it is useful to talk about it as if it were

  7. Attributes Person Cut Logical John Cut Rope Existence Location John Cut The Rope Location We can allow Relations to have attributes like Location in the same way as Entities

  8. Components Person Cut Logical Fred Cut Rope Location Existence Use Knife Fred Used A Knife To Cut The Rope A Relation can have components - other Relations - in the same way an Entity has components

  9. Relations and Objects • We can say • Fred bought a Ford or a Chevrolet • and know that Fred bought a car. We can also say • Fred is Joe’s brother or cousin • and know (and make use of the fact) that there is a family relation between Fred and Joe. • Making relations look like any other object allows us to approach the flexibility of natural language

  10. Relations On Relations Relations connect other relations just as well as they connect objects

  11. Symbolizing Relations If we allow Relations to have the same sorts of properties as Entities - Attributes, Components, Members - then we can build complex Relations out of simple ones by adding properties the text provides, in a way that could not be handled by fixed parameters Logical Object1 Relation Object2 Existence

  12. Relations & Primitives • Verbs do not always map directly into relation primitives • She gave John a headache • This does not fit the primitive of Give - the transference of possession, because “She” does not have the headache • Instead, we need to transform it into • She caused John to have a headache • The more common verbs have many senses, which can be differentiated by the types of object they connect

  13. Relation Matching When matching verbs to relations, we have to match the type of subject, object or multiple objects if ditransitive, to ensure the correct meaning is found. Some verbs, like “Give Up” are collocational, and can have part of the collocation remotely, as “Give It Up” Passive verbs have subjects connected through prepositions, as “He was shot by Fred”, so a whole specialised matching structure using maps for particular meanings is built around prepositions

  14. Relation Matching The matching process is active, as partial matching may occur on any connection, causing a reduction in range of permissible objects on the other connections The matching backtracks as it connects and searches

  15. Matching and Augmenting • Matching may result in tentative new structure being built as the meaning shifts • “Give” becomes “Cause To Have” • where the word “give” turns into a structure that is “cause to have” through a map for the particular meaning, matched against the parameters.

  16. An Example - Fred in Miami

  17. Miami Contains Fred The RELATION operator is controlled logically and existentially through Time, and it in turn controls a CONTAINS operator, asserting Fred’s location

  18. Fine Control • With this level of control, we can say • Fred is in Miami • Fred is not in Miami • Fred could be in Miami • Fred may have been in Miami some time in the last six months • Fred or Joe will be in Miami or Boca Raton soon

  19. All Together Now The combination of logical, existential and time control over relations, together with alternatives on any connection, allows relations built from active structure to represent a wide range of statements

More Related