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• W2134179844 abstract "Clustering is crucial for gene expression data analysis. As an unsupervised exploratory procedure its results can help researchers to gain insights and formulate new hypothesis about biological data from microarrays. Given different settings of microarray experiments, clustering proves itself as a versatile exploratory tool. It can help to unveil new cancer subtypes or to identify groups of genes that respond similarly to a specific experimental condition. In order to obtain useful clustering results, however, different parameters of the clustering procedure must be properly tuned. Besides the selection of the clustering method itself, determining which distance is going to be employed between data objects is probably one of the most difficult decisions. We analyze how different distances and clustering methods interact regarding their ability to cluster gene expression, i.e., microarray data. We study 15 distances along with four common clustering methods from the literature on a total of 52 gene expression microarray datasets. Distances are evaluated on a number of different scenarios including clustering of cancer tissues and genes from short time-series expression data, the two main clustering applications in gene expression. Our results support that the selection of an appropriate distance depends on the scenario in hand. Moreover, in each scenario, given the very same clustering method, significant differences in quality may arise from the selection of distinct distance measures. In fact, the selection of an appropriate distance measure can make the difference between meaningful and poor clustering outcomes, even for a suitable clustering method." @default.
• W2134179844 created "2016-06-24" @default.
• W2134179844 creator A5014723418 @default.
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• W2134179844 date "2014-01-01" @default.
• W2134179844 modified "2023-10-14" @default.
• W2134179844 title "On the selection of appropriate distances for gene expression data clustering" @default.
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• W2134179844 doi "https://doi.org/10.1186/1471-2105-15-s2-s2" @default.
• W2134179844 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4072854" @default.
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• W2134179844 hasPublicationYear "2014" @default.
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