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| + |
| At line 31 added 1 line. |
| + |
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| - In general, the {{search}} operation requires access to all semantic annotations (i.e., for remote searches all remote annotations) to find matching resources. Because of this requirement, as the number of semantic annotations increases, this operation can become expensive. |
| + !!! An optimization method |
| At line 38 added 1 line. |
| + In general, the {{search}} operation requires access to all semantic annotations (i.e., for remote searches all remote annotations) to find matching resources. Because of this requirement, as the number of semantic annotations increases, this operation can become expensive. |
| At line 39 added 3 lines. |
| + We may reduce the cost of {{search}} by adding additional services that can be executed locally at each repository and by altering the search algorithm. The additional services are: |
| + {{{ |
| + getRepositories() :: Set<RepositoryID> |
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| - We can reduce the cost by indexing semantic annotations for search. In particular, we can define an index of the form: {{ontoSearchIndex ( ResourceID, ResourceType, SemanticType )}} that can in particular, provide the functions: |
| + getResources() :: Set<ResourceID> |
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| - {{{ |
| - AnnotationEngine: ConceptExpression getSemanticType( OntoSearchIndex, ResourceID ) |
| - AnnotationEngine: Set<ResourceID> getResourceIDs( OntoSearchIndex ) |
| - AnnotationEngine: ResourceType getResourceType( OntoSearchIndex, ResourceID ) |
| + partialSearch( ConceptExpression, ResourceID ) :: Set<ConceptExpression> |
| At line 47 added 1 line. |
| + Using these operations, the search algorithm would procede as follows. First, the search algorithm contacts a remote repository ... |
