Difference between revisions of "Zero element"
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The '''zero element''' in [[relational network notation]] is represented by a small circle at the end of a [[line (in relational network theory)|line]]. Impulses moving to a zero element disappear; and an impulse may move from a zero element to the connecting line at any time. | The '''zero element''' in [[relational network notation]] is represented by a small circle at the end of a [[line (in relational network theory)|line]]. Impulses moving to a zero element disappear; and an impulse may move from a zero element to the connecting line at any time. | ||
| + | |||
| + | ==Example== | ||
| + | [[File:zero-element.jpg|300px|thumb|left|A fragment of English lexotactics, showing four examples of the zero element. Diagram by [[User:PaulSank|JPS]] based on Lamb 1966.]] | ||
| + | In the diagram, four examples of the zero element occur. | ||
| + | *The leftmost zero element, below a downward [[OR node]], indicates that instead of "always" or "often", there may be a null output, i.e., nothing. | ||
| + | *The next zero element shows that there could be "have-en" or nothing. In other words, the 'have-en' is optional. | ||
| + | *The next zero element, above the downward [[AND node]], shows the (optional) third of three possible outputs: (1) be-ing-go-to followed by have-en; (2) be-ing-go-to followed by nothing; (3) nothing at all. | ||
| + | *The rightmost zero element shows three possibilities: be-ing, be-able-to, or nothing. | ||
==Sources== | ==Sources== | ||
Latest revision as of 17:37, 12 February 2018
The zero element in relational network notation is represented by a small circle at the end of a line. Impulses moving to a zero element disappear; and an impulse may move from a zero element to the connecting line at any time.
Example
A fragment of English lexotactics, showing four examples of the zero element. Diagram by JPS based on Lamb 1966.
In the diagram, four examples of the zero element occur.
- The leftmost zero element, below a downward OR node, indicates that instead of "always" or "often", there may be a null output, i.e., nothing.
- The next zero element shows that there could be "have-en" or nothing. In other words, the 'have-en' is optional.
- The next zero element, above the downward AND node, shows the (optional) third of three possible outputs: (1) be-ing-go-to followed by have-en; (2) be-ing-go-to followed by nothing; (3) nothing at all.
- The rightmost zero element shows three possibilities: be-ing, be-able-to, or nothing.
Sources
- Lamb, Sydney M. 1966. Outline of Stratificational Grammar. Washington DC: Georgetown University Press.
