Indexing Textual Information

Relating Graphical Features with Concept Classes for Automatic News Video Indexing

Automatic indexing of video data, especially news videos, is in strong demand considering their contents' importance and value. Various attempts have been made to index news videos automatically in order to cope with this demand, including recent challenges that utilize accompanying textual information. However, most of these methods tend to be textual information driven, which do not thoroughl...

A Retrieval System for Graphical Documents

We present a method for indexing line drawings automatically. The indexing scheme is used for the retrieval of line-drawings in a weighted information retrieval (IR) system. Being content-based, the indexing method depends not only on the graphical structures in the drawings, but on the textual entries as well. No a priori knowledge is used in the indexing scheme, since application-speciic assu...

The SPIRIT Spatial Search Engine: Architecture, Ontologies and Spatial Indexing

The SPIRIT search engine provides a test bed for the development of web search technology that is specialised for access to geographical information. Major components include the user interface, geographical ontology, maintenance and retrieval functions for a test collection of web documents, textual and spatial indexes, relevance ranking and metadata extraction. Here we summarise the functiona...

A-posteriori indexing, classification and retrieval of textual data

Towards Cross-Media Feature Extraction

In this paper we describe past and present work dealing with the use of textual resources, out of which semantic information can be extracted in order to provide for semantic annotation and indexing of associated image or video material. Since the emergence of semantic web technologies and resources, entities, relations and events extracted from textual resources by means of Information Extract...

Normalizing Spatial Information to Improve Geographical Information Indexing and Retrieval in Digital Libraries

Our contribution is dedicated to geographic information contained in unstructured textual documents. The main focus of this article is to propose a general indexing strategy that is dedicated to spatial information, but which could be applied to temporal and thematic information as well. More specifically, we have developed a process flow that indexes the spatial information contained in textua...