| 摘要 |
An apparatus for content item annotation comprises an ontology processor (103) which generates a reduced ontology from a first ontology. The reduced ontology comprises a subset of concepts of the first ontology. An analysis processor (107) and an annotation processor (109) determine first annotation data for the content item by content analysis based on the reduced ontology. A monitoring processor (115) monitors usage of the first annotation data. A criterion processor (117) determines if the usage of the first annotation data meets a first criterion. If not, the ontology processor (103) generates a second ontology from the first ontology and the analysis processor (107) and the annotation processor (109) modifies the first annotation data in response to a content analysis based on the second ontology. The invention may allow a facilitated automatic annotation of content items with more efficient usage of the computational resource available for the annotation.
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