Scope
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| − | The UNL representation is a '''hyper-graph''' | + | The UNL representation is a '''hyper-graph''', which means that it may consist of several interlinked or subordinate sub-graphs, which are used to define the boundaries between complex semantic entities being represented. These sub-graphs correspond roughly to the concept of "dependent (subordinate) clauses", i.e., groups of words that consist of a subject and a predicate and which are embedded in a larger structure (the independent clause). |
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| + | == What is a "scope" == | ||
| + | A scope is a group of nodes and relations between nodes that work as a single semantic entity in a UNL graph. For instance, in the sentence "Mary saw Peter when John arrived", the dependent clause "when John arrived" describes the argument of a time relation (to the verb "saw") and, therefore, should be represented as a sub-graph (i.e., as a hyper-node) instead of a set of isolated nodes. | ||
[[Image:Scope.jpg]] | [[Image:Scope.jpg]] | ||
| − | + | In the UNL table representation, hyper-nodes are indexed by ":XX", where XX is a two-digit hyper-node index. The main node index is :00 and may be omitted. Hyper-node indexes must be associated to every relation inside the node. | |
Revision as of 17:01, 12 July 2010
The UNL representation is a hyper-graph, which means that it may consist of several interlinked or subordinate sub-graphs, which are used to define the boundaries between complex semantic entities being represented. These sub-graphs correspond roughly to the concept of "dependent (subordinate) clauses", i.e., groups of words that consist of a subject and a predicate and which are embedded in a larger structure (the independent clause).
Contents |
What is a "scope"
A scope is a group of nodes and relations between nodes that work as a single semantic entity in a UNL graph. For instance, in the sentence "Mary saw Peter when John arrived", the dependent clause "when John arrived" describes the argument of a time relation (to the verb "saw") and, therefore, should be represented as a sub-graph (i.e., as a hyper-node) instead of a set of isolated nodes.
In the UNL table representation, hyper-nodes are indexed by ":XX", where XX is a two-digit hyper-node index. The main node index is :00 and may be omitted. Hyper-node indexes must be associated to every relation inside the node.
agt:00(saw, Mary) or agt(saw,Mary)
obj:00(saw, Peter) or obj(saw,Peter)
tim:00(saw, :01) or tim(saw, :01)
agt:01(arrived, John)
