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2015 ; 34
(10
): 423-6
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Cancer research in the era of next-generation sequencing and big data calls for
intelligent modeling
#MMPMID25963029
Yli-Hietanen J
; Ylipää A
; Yli-Harja O
Chin J Cancer
2015[Apr]; 34
(10
): 423-6
PMID25963029
show ga
We examine the role of big data and machine learning in cancer research. We
describe an example in cancer research where gene-level data from The Cancer
Genome Atlas (TCGA) consortium is interpreted using a pathway-level model. As the
complexity of computational models increases, their sample requirements grow
exponentially. This growth stems from the fact that the number of combinations of
variables grows exponentially as the number of variables increases. Thus, a large
sample size is needed. The number of variables in a computational model can be
reduced by incorporating biological knowledge. One particularly successful way of
doing this is by using available gene regulatory, signaling, metabolic, or
context-specific pathway information. We conclude that the incorporation of
existing biological knowledge is essential for the progress in using big data for
cancer research.