Hartrumpf, Sven and Leveling, Johannes ORCID: 0000-0003-0603-4191 (2010) Recursive question decomposition for answering complex geographic questions. In: Text Retrieval Experiments, 10th Workshop of the Cross-Language Evaluation Forum, CLEF 2009., Sept. 30 - Oct. 2 2009, Corfu, Greece.
Abstract
This paper describes the GIRSA-WP system and the experiments
performed for GikiCLEF 2009, the geographic information retrieval task in the question answering track at CLEF 2009. Three runs were submitted. The first one contained only results from the InSicht QA system; it showed high precision, but low recall. The combination with results from the GIR system GIRSA increased recall considerably, but
reduced precision. The second run used a standard IR query, while the third run combined such queries with a Boolean query with selected keywords. The evaluation showed that the third run achieved significantly higher mean average precision (MAP) than the second run. In both cases,
integrating GIR methods and QA methods was successful in combining their strengths (high precision of deep QA, high recall of GIR), resulting in the third-best performance of automatic runs in GikiCLEF. The overall performance still leaves room for improvements. For example, the multilingual approach is too simple. All processing is done in only one
Wikipedia (the German one); results for the nine other languages are collected by following the translation links in Wikipedia.
Metadata
Item Type: | Conference or Workshop Item (Paper) |
---|---|
Event Type: | Workshop |
Refereed: | Yes |
Uncontrolled Keywords: | GIRSA-WP system; Translation |
Subjects: | Computer Science > Information retrieval |
DCU Faculties and Centres: | Research Institutes and Centres > Centre for Next Generation Localisation (CNGL) Research Institutes and Centres > National Centre for Language Technology (NCLT) DCU Faculties and Schools > Faculty of Engineering and Computing > School of Computing |
Published in: | Multilingual Information Access Evaluation I. Text Retrieval Experiments. Lecture Notes in Computer Science 6241. Springer-Verlag. |
Publisher: | Springer-Verlag |
Official URL: | http://www.springerlink.com/content/rvu352k7040246... |
Copyright Information: | © 2010 Springer-Verlag. The original publication is available at www.springerlink.com |
Use License: | This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License |
ID Code: | 16034 |
Deposited On: | 01 Jun 2011 14:01 by Shane Harper . Last Modified 26 Oct 2018 11:24 |
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