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Microarray Missing Data Imputation based on a Set Theoretic Framework and Biological Constraints
Hong Kong August 20-August 24
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/ICPR.2006.79618th International Conference on Patt ...
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Xiangchao Gan, City University of Hong Kong
Alan Wee-Chung Liew, Chinese University of Hong Kong, Shatin, Hong Kong
Hong Yan, University of Sydney, NSW 2006, Australia
Gene expressions measured using microarrays usually suffer from the missing value problem. Existing missing value imputation algorithms have some limitations. For example, some algorithms have good performance only when strong local correlation exists in data while some provide the best estimate when data is dominated by a global structure. In addition, these algorithms do not take into account many biological constraints in the imputation procedure. In this paper, we propose a set theoretic framework for missing data imputation. We design our algorithm by taking into consideration the biological characteristic of the data and exploit the local correlation and the global correlation structure adaptively. Experiments show that our algorithm can achieve a significant reduction of error compared with existing methods.
Citation:
Xiangchao Gan, Alan Wee-Chung Liew, Hong Yan, "Microarray Missing Data Imputation based on a Set Theoretic Framework and Biological Constraints," icpr, vol. 3, pp.842-845, 18th International Conference on Pattern Recognition (ICPR'06) Volume 3, 2006
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