Spatial and Temporal Information Retrieval in Textual Corpora - Geographical Information Retrieval in Textual Corpora - page 28

13) SINAI [GAR 09], for Systemas intelligentes de acceso a la información,
supports IR in textual documents.

14) Document Trajectory [STR 10], for Document Trajectory Extraction, explores
textual Web documents (collections of Wikipedia articles, for example) and presents
event/place couples in a chronological order.

15) Local Search [BRI 10] is a GIR system, processing textual documents, which
for the spatial dimension uses an ontology-based index.

16) Mondeca [TEI 11]isaGIRsystemhandlingtextualdocumentsandofferingthe
possibility of combining thematic and temporal search criteria.

System Reference Extraction Index

Space Time Theme

GIPSY [WOO 94] - + − −

GEOSEM [BIL 03] LinguaStream + + +

SPIRIT [VAI 05] Gate + − +

GRID [VAL 06] Gate + − +

DIGMAP [MAR 07] - + + +

GEOTRACKER [CHE 07] Miracle + + +

STEWARD [LIE 07] - + − +

PIIR [LOU 08b] LinguaStream + − −

PIV [GAI 08] LinguaStream + + +

WatWasWaar [LIB 08] - + + +

CITER [PFO 09] Gate + + +

GEOOREKA [BUS 09b] - + − +

SINAI [GAR 09] Gate + − +

Document Trajectory [STR 10] UIMA + + −

Local Search [BRI 10] LingPipe + − +

Mondeca [TEI 11] - − + +

Table 2.1. GIR projects: information extraction platforms implemented and
geographic dimensions indexed - completed extract of [PAL 10c]

As shown in Table 2.1, these systems of extraction, indexing and retrieval of
geographic information deal with the spatial dimension in priority. Concerning the
extraction of the information (see Table 2.1, Extraction column), the most used
platforms are GATE , LINGUASTREAM and UIMA . Only the Local Search system
integrates the NER tool LingPipe [STO 08]. Let us note that only the GEOSEM and
PIV systems deal with spatial and temporal relations during the extraction phase,
while Local Search only processes spatial relations of inclusion. The visualization of
the indexed documents is an issue addressed by the majority of prototypes. Even