query: PCA on train and test datasets: should I run one PCA on train+test or two separate on train and on test?
positive_passages.docid: 2632
positive_passages.text: PCA and the train/test split
negative_passages.docid: 126800
negative_passages.text: Why do we use multiple epochs and why does it not lead to over fitting
negative_passages.docid: 36609
negative_passages.text: Creating a single index from several principal components or factors retained from PCA/FA
negative_passages.docid: 51254
negative_passages.text: How to project a new vector onto the PC space using kernel PCA?
negative_passages.docid: 85031
negative_passages.text: How to interpret this PCA biplot to determine which attributes to pick?
negative_passages.docid: 6316
negative_passages.text: PCA on correlation or covariance?
negative_passages.docid: 118103
negative_passages.text: Does PCA's reconstruction error get reduced with more PCs being used?
negative_passages.docid: 11188
negative_passages.text: Can principal component analysis be applied to datasets containing a mix of continuous and categorical variables?
negative_passages.docid: 135047
negative_passages.text: Why does PCA maximize total variance of the projection?
negative_passages.docid: 90089
negative_passages.text: Why are PCA eigenvectors orthogonal and what is the relation to the PCA scores being uncorrelated?
negative_passages.docid: 17831
negative_passages.text: Training on the full dataset after cross-validation?
negative_passages.docid: 78589
negative_passages.text: Why mini batch size is better than one single "batch" with all training data?
negative_passages.docid: 25535
negative_passages.text: Categorical Principal Component Analysis - using Count, Continuous, Ordinal variables together
negative_passages.docid: 39839
negative_passages.text: Doing principal component analysis or factor analysis on binary data
negative_passages.docid: 70917
negative_passages.text: What's the difference between principal component analysis and multidimensional scaling?
negative_passages.docid: 112836
negative_passages.text: T test two data set 3 variables per data set, can be used?
negative_passages.docid: 93145
negative_passages.text: Can I add several additional variables to my principal component regression?