Abstract:
:Over the years, there has been growing interest in using machine learning techniques for biomedical data processing. When tackling these tasks, one needs to bear in mind that biomedical data depends on a variety of characteristics, such as demographic aspects (age, gender, etc.) or the acquisition technology, which might be unrelated with the target of the analysis. In supervised tasks, failing to match the ground truth targets with respect to such characteristics, called confounders, may lead to very misleading estimates of the predictive performance. Many strategies have been proposed to handle confounders, ranging from data selection, to normalization techniques, up to the use of training algorithm for learning with imbalanced data. However, all these solutions require the confounders to be known a priori. To this aim, we introduce a novel index that is able to measure the confounding effect of a data attribute in a bias-agnostic way. This index can be used to quantitatively compare the confounding effects of different variables and to inform correction methods such as normalization procedures or ad-hoc-prepared learning algorithms. The effectiveness of this index is validated on both simulated data and real-world neuroimaging data.
journal_name
Artif Intell Medjournal_title
Artificial intelligence in medicineauthors
Ferrari E,Retico A,Bacciu Ddoi
10.1016/j.artmed.2020.101804subject
Has Abstractpub_date
2020-03-01 00:00:00pages
101804eissn
0933-3657issn
1873-2860pii
S0933-3657(19)30341-0journal_volume
103pub_type
杂志文章abstract::The increasing access to brain signal data using electroencephalography creates new opportunities to study electrophysiological brain activity and perform ambulatory diagnoses of neurological disorders. This work proposes a pairwise distance learning approach for schizophrenia classification relying on the spectral pr...
journal_title:Artificial intelligence in medicine
pub_type: 杂志文章
doi:10.1016/j.artmed.2020.101852
更新日期:2020-05-01 00:00:00
abstract:OBJECTIVE:We provide a survey of recent advances in biomedical image analysis and classification from emergent imaging modalities such as terahertz (THz) pulse imaging (TPI) and dynamic contrast-enhanced magnetic resonance images (DCE-MRIs) and identification of their underlining commonalities. METHODS:Both time and f...
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journal_title:Artificial intelligence in medicine
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journal_title:Artificial intelligence in medicine
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journal_title:Artificial intelligence in medicine
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journal_title:Artificial intelligence in medicine
pub_type: 杂志文章
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journal_title:Artificial intelligence in medicine
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journal_title:Artificial intelligence in medicine
pub_type: 杂志文章
doi:10.1016/j.artmed.2008.03.008
更新日期:2008-06-01 00:00:00
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journal_title:Artificial intelligence in medicine
pub_type: 杂志文章
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journal_title:Artificial intelligence in medicine
pub_type: 杂志文章,评审
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更新日期:1993-04-01 00:00:00
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journal_title:Artificial intelligence in medicine
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journal_title:Artificial intelligence in medicine
pub_type: 杂志文章
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journal_title:Artificial intelligence in medicine
pub_type: 杂志文章
doi:10.1016/j.artmed.2011.09.002
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pub_type: 杂志文章
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journal_title:Artificial intelligence in medicine
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doi:10.1016/j.artmed.2009.03.004
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pub_type: 杂志文章
doi:10.1016/j.artmed.2014.03.001
更新日期:2014-06-01 00:00:00
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journal_title:Artificial intelligence in medicine
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journal_title:Artificial intelligence in medicine
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doi:10.1016/j.artmed.2019.06.005
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journal_title:Artificial intelligence in medicine
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journal_title:Artificial intelligence in medicine
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journal_title:Artificial intelligence in medicine
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