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A Utility Centered Approach for Evaluating and Optimizing Geo-Tagging

Weichselbraun, Albert (2009) A Utility Centered Approach for Evaluating and Optimizing Geo-Tagging. In: First International Conference on Knowledge Discovery and Information Retrieval (KDIR 2009), 6-8 Oct 2009, Madeira, Portugal.

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Geo-tagging is the process of annotating a document with its geographic focus by extracting a unique locality that describes the geographic context of the document as a whole.
Accurate geographic annotations are crucial for geospatial applications such as Google Maps or the IDIOM Media Watch on Climate Change, but many obstacles complicate the evaluation of such tags.

This paper introduces an approach for optimizing geo-tagging by applying the concept of utility from economic theory to tagging results.
Computing utility scores for geo-tags allows a fine grained evaluation of the tagger's performance in regard to multiple dimensions specified in use case specific domain ontologies and provides means for addressing problems such as different scope and coverage of evaluation corpora.

The integration of external data sources and evaluation ontologies with user profiles ensures that the framework considers use case specific requirements.
The presented model is instrumental in comparing different geo-tagging settings, evaluating the effect of design decisions, and customizing geo-tagging to a particular use cases.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:geo-tagging, quality assessment, evaluation, utility model, GeoNames
Subjects:Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions:Faculty of Engineering, Science and Mathematics > School of Electronics and Computer Science
ID Code:13
Deposited By: Dr Albert Weichselbraun
Deposited On:09 Oct 2009 09:37
Last Modified:22 Jul 2010 14:25

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