A Primer on Gene Expression and Microarrays for Machine Learning Researchers. Kuo, W. P.; Kim, E.; Trimarchi, J.; Jenssen, T.; Vinterbo, S. A.; and Ohno-Machado, L. J Biomed Inform, 37(4):293-303, August, 2004.
doi  abstract   bibtex   
Data originating from biomedical experiments has provided machine learning researchers with an important source of motivation for developing and evaluating new algorithms. A new wave of algorithmic development has been initiated with the publication of gene expression data derived from microarrays. Microarray data analysis is particularly challenging given the large number of measurements (typically in the order of thousands) that are reported for relatively few samples (typically in the order of dozens). Many data sets are now available on the web. It is important that machine learning researchers understand how data are obtained and which assumptions are necessary in the analysis. Microarray data have the potential to cause significant impact in machine learning research, not just as a rich and realistic source of cases for testing new algorithms, as has been the UCI machine learning repository in the past decades, but also as a main motivation for their development. In this article, we briefly review the biology underlying microarrays, the process of obtaining gene expression measurements, and the rationale behind the common types of analyses involved in a microarray experiment. We outline the main challenges and reiterate critical considerations regarding the construction of supervised learning models that use this type of data. The goal of this article is to familiarize machine learning researchers with data originated from gene expression microarrays.
@article{Kuo2004,
  title = {A Primer on Gene Expression and Microarrays for Machine Learning Researchers.},
  volume = {37},
  copyright = {All rights reserved},
  doi = {10.1016/j.jbi.2004.07.002},
  abstract = {Data originating from biomedical experiments has provided machine learning researchers with an important source of motivation for developing and evaluating new algorithms. A new wave of algorithmic development has been initiated with the publication of gene expression data derived from microarrays. Microarray data analysis is particularly challenging given the large number of measurements (typically in the order of thousands) that are reported for relatively few samples (typically in the order of dozens). Many data sets are now available on the web. It is important that machine learning researchers understand how data are obtained and which assumptions are necessary in the analysis. Microarray data have the potential to cause significant impact in machine learning research, not just as a rich and realistic source of cases for testing new algorithms, as has been the UCI machine learning repository in the past decades, but also as a main motivation for their development. In this article, we briefly review the biology underlying microarrays, the process of obtaining gene expression measurements, and the rationale behind the common types of analyses involved in a microarray experiment. We outline the main challenges and reiterate critical considerations regarding the construction of supervised learning models that use this type of data. The goal of this article is to familiarize machine learning researchers with data originated from gene expression microarrays.},
  number = {4},
  journal = {J Biomed Inform},
  author = {Kuo, Winston Patrick and Kim, Eun-Young and Trimarchi, Jeff and Jenssen, Tor-Kristian and Vinterbo, Staal A. and {Ohno-Machado}, Lucila},
  month = aug,
  year = {2004},
  keywords = {15465482},
  pages = {293-303},
  pii = {S1532-0464(04)00069-3},
  pubmedid = {15465482}
}
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