Unfolding algorithms and RooUnfold
Prof. dr hab. Elżbieta Richter-Wąs
Unfolding algorithms:
Extracted from slides by T. Adye at PHYSTAT 2016 and K. Reygers lectures at Heilderbeg Univ.
Deconvolution
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To Unfold or not?
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When Unfolding Make Sense
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When Unfolding Make Sense
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Response Matrix (I)
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Response Matrix (II)
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Response Matrix (III)
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Response Matrix (IV)
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Unfolding by Inverting Responce Matrix (I)
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Unfolding by Inverting Responce Matrix (II)
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Unfolding by Inverting Responce Matrix (III)
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What’s Wrong with the Matrix Inversion Method?
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Bin-by-Bin Method (I)
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Bin-by-Bin Method (II)
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Regularized Unfolding
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Tikhonov Regularization
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RooUnfold package
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RooUnfold features
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RooUnfold testing
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RooUnfold classes
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RooUnfold example (Bayes)
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RooUnfold example (Bayes)
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RooUnfold algorithms: Iterative Bayes
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RooUnfold algorithms: SVD
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RooUnfold algorithms: TUnfold
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RooUnfold algorithms: Unregularised
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RooUnfold algorithms: comparison
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RooUnfold with Bayes algorithm (3 iterations)
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RooUnfold with SVD algorithm ( k=30 )
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RooUnfold with TUnfold algorithm ( t=0.004 )
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Unregularised matrix inversion
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Simple correction factors
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Unfolding errors
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Bin-to-bin correlations
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Which Method To Choose?
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