Abstract
Score normalization and results merging are important components of many IR applications. Recently MinMax—an unsupervised linear score normalization method—was shown to perform quite well across various distributed retrieval testbeds, although based on strong assumptions. The CORI results merging method relaxes these assumptions to some extent and significantly improves the performance of MinMax. We parameterize CORI and evaluate its performance across a range of parameter settings. Experimental results on three distributed retrieval testbeds show that CORI significantly outperforms state-of-the-art results merging and score normalization methods when its parameter goes to infinity.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Arguello, J., Callan, J., Diaz, F.: Classification-based resource selection. In: Proceedings of the ACM CIKM, pp. 1277–1286. ACM (2009)
Callan, J.: Distributed Information Retrieval. In: Advances in Information Retrieval, ch. 5, pp. 127–150. Kluwer Academic Publishers (2000)
Fernández, M., Vallet, D., Castells, P.: Using historical data to enhance rank aggregation. In: Proceeding of the ACM SIGIR, pp. 643–644 (2006)
Lee, J.H.: Analyses of multiple evidence combination. In: Proceedings of the ACM SIGIR, pp. 267–276. ACM (1997)
Markov, I., Arampatzis, A., Crestani, F.: Unsupervised linear score normalization revisited. In: Proceedings of the ACM SIGIR, pp. 1161–1162 (2012)
Shokouhi, M., Zobel, J.: Robust result merging using sample-based score estimates. ACM Trans. Inf. Syst. 27(3), 1–29 (2009)
Si, L., Callan, J.: Relevant document distribution estimation method for resource selection. In: Proceedings of the ACM SIGIR, pp. 298–305 (2003)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Markov, I., Arampatzis, A., Crestani, F. (2013). On CORI Results Merging. In: Serdyukov, P., et al. Advances in Information Retrieval. ECIR 2013. Lecture Notes in Computer Science, vol 7814. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-36973-5_76
Download citation
DOI: https://doi.org/10.1007/978-3-642-36973-5_76
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-36972-8
Online ISBN: 978-3-642-36973-5
eBook Packages: Computer ScienceComputer Science (R0)