Abstract Details
Activity Number:
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209
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Type:
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Invited
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Date/Time:
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Monday, August 4, 2014 : 2:00 PM to 3:50 PM
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Sponsor:
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Section on Statistical Computing
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Abstract #310980
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Title:
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Exact Inference After Model Selection via the Lasso
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Author(s):
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Jonathan Taylor and Jason Lee and Dennis Sun and Yuekai Sun
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Companies:
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Stanford University and Stanford University and Stanford University and Stanford University
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Keywords:
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Abstract:
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We develop a framework for inference after model selection based on the Lasso. At the core of this framework is a result that characterizes the exact (non-asymptotic) distribution of a pivot computed from the Lasso solution. This pivot allows us to (i) devise a test statistic that has an exact (non-asymptotic) $\unif(0,1)$ distribution under the null hypothesis that all relevant variables have been included in the model, and (ii) construct valid confidence intervals for the selected coefficients that account for the selection procedure.
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