Data Preprocessing
From Ufldl
(→ICA-based Models (with orthogonalization)) |
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Note: When working in a classification framework, one should compute the PCA/ZCA whitening matrices based only on the training set. The following parameters used be saved for use with the test set: (a) average vector that was used to zero-mean the data, (b) whitening matrices. The test set should undergo the same preprocessing steps using these saved values. }} | Note: When working in a classification framework, one should compute the PCA/ZCA whitening matrices based only on the training set. The following parameters used be saved for use with the test set: (a) average vector that was used to zero-mean the data, (b) whitening matrices. The test set should undergo the same preprocessing steps using these saved values. }} | ||
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== Large Images == | == Large Images == | ||
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In this section, we describe several "standard pipelines" that have worked well for some datasets: | In this section, we describe several "standard pipelines" that have worked well for some datasets: | ||
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=== Natural Grey-scale Images === | === Natural Grey-scale Images === |