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Fig. 6.

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Results on ideal spectroscopy without measurement noise. Top row: results of the non-attenuated catalogue analyses. Middle row: results of the fixed attenuation catalogue analyses. Bottom row: results of the real attenuation catalogue analyses. NNLS, LASSO and ElasticNet results are respectively plotted in orange, green and red. The left column shows examples of redshift distribution fits with the real distribution plotted in blue. Shown on the right is the BAO relative error of the analysed colour groups ordered by redshift.

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