towards a structure-based multimedia retrieval model
In this paper, we are interested in multimedia XML document retrieval, whose aim is to find relevant document components (i.e XML elements) that focus on the user needs. We propose to represent multimedia elements using not only textual information, but also hierarchical structure. Indeed, an XML document can be represented as a tree, whose nodes correspond to XML elements. Thanks to this representation, an analogy between XML documents and ontologies can be established. Therefore, to quantify the participation degree of each node in the multimedia element representation, we propose two measures using the ontology hierarchy. Another part of our model consists of defining the best window of multimedia fragments to be returned to the user. Through the evaluation of our model on the INEX 2006 Multimedia Fragments Task, we show the importance of using the document structure in multimedia information retrieval.
xml hierarchical structure contextual multimedia retrieval semantic similarity measure