A model for information retrieval driven by conceptual spaces

Tanase, D. 2015. A model for information retrieval driven by conceptual spaces. PhD thesis University of Westminster Faculty of Social Sciences and Humanities

TitleA model for information retrieval driven by conceptual spaces
TypePhD thesis
AuthorsTanase, D.
Abstract

A retrieval model describes the transformation of a query into a set of documents. The question is: what drives this transformation? For semantic information retrieval type of models this transformation is driven by the content and structure of the semantic models.

In this case, Knowledge Organization Systems (KOSs) are the semantic models that encode the meaning employed for monolingual and cross-language retrieval. The focus of this research is the relationship between these meanings’ representations and their role and potential in augmenting existing retrieval models effectiveness.

The proposed approach is unique in explicitly interpreting a semantic reference as a pointer to a concept in the semantic model that activates all its linked neighboring concepts. It is in fact the formalization of the information retrieval model and the integration of knowledge resources from the Linguistic Linked Open Data cloud that is distinctive from other approaches. The preprocessing of the semantic model using Formal Concept Analysis enables the extraction of conceptual spaces (formal contexts)that are based on sub-graphs from the original structure of the semantic model. The types of conceptual spaces built in this case are limited by the KOSs structural relations relevant to retrieval: exact match, broader, narrower, and related. They capture the
definitional and relational aspects of the concepts in the semantic model. Also, each formal context is assigned an operational role in the flow of processes of the retrieval system enabling a clear path towards the implementations of monolingual and cross-lingual systems.

By following this model’s theoretical description in constructing a retrieval system, evaluation results have shown statistically significant results in both monolingual and bilingual settings when no methods for query expansion were used. The test suite was run on the Cross-Language Evaluation Forum Domain Specific 2004-2006 collection with additional extensions to match the specifics of this model.

Year2015
Filetanase_diana_thesis2015.pdf

Related outputs

Entangled semantics
Tanase, D. and Kapetanios, E. 2013. Entangled semantics. Métais, E., Meziane, F., Saraee, M., Sugumaran, V. and Vadera, S. (ed.) NLDB 2013: 18th International Conference on Application of Natural Language to Information Systems. University of Salford, Manchester, UK 19-21 June 2013 Springer. doi:10.1007/978-3-642-38824-8_36

Are SKOS concept schemas ready for multilingual applications?
Tanase, D. and Kapetanios, E. 2012. Are SKOS concept schemas ready for multilingual applications? in: Sack, H. and Pellegrini, T. (ed.) I-SEMANTICS 2012 - proceedings of the 8th International Conference on Semantic Systems, Graz, Austria — September 05 - 07, 2012 New York ACM. pp. 149-156

Text segments as constrained formal concepts
Tatar, D., Kapetanios, E., Sacarea, C. and Tanase, D. 2010. Text segments as constrained formal concepts. in: Ida, T., Negru, V., Jebelean, T., Petcu, D., Watt, S. and Zaharie, D. (ed.) 12th International Symposium on Symbolic and Numeric Algorithms for Scientific Computing (SYNASC), Timisoara, Romania, 23-26 September 2010 IEEE . pp. 223-228

At the cross-road of the social Web and cross-lingual information retrieval
Tanase, D. and Kapetanios, E. 2009. At the cross-road of the social Web and cross-lingual information retrieval. in: Murugesan, S. (ed.) Handbook of research on Web 2.0, 3.0, and X.0: technologies, business, and social applications USA Information Science Reference.

A parametric linguistics based approach for cross-lingual web querying
Kapetanios, E., Sugumaran, V. and Tanase, D. 2008. A parametric linguistics based approach for cross-lingual web querying. Data & Knowledge Engineering. 66 (1), pp. 35-52. doi:10.1016/j.datak.2007.07.008

Evaluating the impact of personal dictionaries for cross-language information retrieval of socially annotated images
Tanase, D. and Kapetanios, E. 2008. Evaluating the impact of personal dictionaries for cross-language information retrieval of socially annotated images. iCLEF Workshop. Aarhus, Denmark 16 Sep 2008

Multi-lingual Web querying: a parametric linguistics based approach
Kapetanios, E., Sugumaran, V. and Tanase, D. 2006. Multi-lingual Web querying: a parametric linguistics based approach. in: Kop, C., Fliedl, G., Mayr, H.C. and Metais, E. (ed.) Natural Language Processing and Information Systems: 11th International Conference on Applications of Natural Language to Information Systems, NLDB 2006, Klagenfurt, Austria, May 31 - June 2, 2006. Proceedings Berlin, Germany Springer.

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