Scope
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− | The UNL representation is a '''hyper-graph''', which means that it may consist of several interlinked or subordinate sub-graphs | + | The UNL representation is a '''hyper-graph''', which means that it may consist of several interlinked or subordinate sub-graphs. These sub-graphs are represented as hyper-nodes and 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). They are used to define the boundaries between complex semantic entities being represented. |
− | == What is a | + | == 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 | + | 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 and, therefore, should be represented as a hyper-node (i.e., as a sub-graph) as indicated below: |
[[Image:Scope.jpg]] | [[Image:Scope.jpg]] |
Revision as of 17:04, 12 July 2010
The UNL representation is a hyper-graph, which means that it may consist of several interlinked or subordinate sub-graphs. These sub-graphs are represented as hyper-nodes and 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). They are used to define the boundaries between complex semantic entities being represented.
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 and, therefore, should be represented as a hyper-node (i.e., as a sub-graph) as indicated below:
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)