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Unmixing for Causal Inference: Thoughts on McCaffrey and Danks
Kun Zhang1, Madelyn R K Glymour2
1Department of Philosophy, Carnegie Mellon University, Pittsburgh, PA, USA, kunz1@cmu.edu.
Abstract:
McCaffrey and Danks have posed the challenge of discovering causal relations in data drawn from a mixture of distributions as an impossibility result in functional magnetic resonance (fMRI). We give an algorithm that addresses this problem for the distributions commonly assumed in fMRI studies and find that in testing, it can accurately separate data from mixed distributions. As with other obstacles to automated search, the problem of mixed distributions is not an impossible one, but rather a challenge. 1Introduction2Background3Addressing the Problem4Discussion.
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