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  1. machine learning - Why downsample? - Cross Validated

    Suppose I want to learn a classifier that predicts if an email is spam. And suppose only 1% of emails are spam. The easiest thing to do would be to learn the trivial classifier that says none …

  2. Pooling vs. stride for downsampling - Cross Validated

    Jan 16, 2019 · Pooling and stride both can be used to downsample the image. Let's say we have an image of 4x4, like below and a filter of 2x2. Then how do we decide whether to use (2x2 …

  3. Upweight minority class vs. downsample+upweight majority class?

    Mar 31, 2022 · They are both correct. There's no conflict between these approaches because there are different upweights: sample weights and class weights. When you adopt the …

  4. Downsampling: How to - guru3D Forums

    Jun 17, 2011 · EDIT: With newer drivers, adjusting timings may no longer be necessary in all cases to create down sampling resolutions. Attempt to create a custom resolution using the …

  5. Model Overfitting When Employing Upsampling/DownSampling

    Mar 23, 2021 · Model Overfitting When Employing Upsampling/DownSampling Ask Question Asked 4 years, 8 months ago Modified 4 years, 8 months ago

  6. Is up- or down-sampling imbalanced data actually that effective?

    Dec 12, 2014 · I frequently hear up- or down-sampling of data discussed as a way of dealing with classification of imbalanced data. I understand that this could be useful if you're working with a …

  7. What are the rules / guidelines for downsampling? - Cross Validated

    You can either start by downsampling the negative class, so you have a 50:50 ratio of positive to negative sample, and slowly lessen how much you down sample. Or vice versa, start with a …

  8. Max Pooling vs Average Pooling for residual/skip connections

    Jun 9, 2021 · Currently I'm using average pooling for this spatial downsampling, but I'm wondering if there would be an advantage to using max pooling to propagate the highest intensity features.

  9. r - Is downsampling a valid approach to compare regression …

    Sep 13, 2024 · Since a single downsampling run may be subject to random variation and introduce biases, I would repeat the downsampling process multiple times (e.g., 𝑘 = 100) to get …

  10. Is downsampling necessary in CNN? - Cross Validated

    Sep 22, 2022 · Does downsampling improve accuracy? Because in my experiment with UNet model, 1 original UNet with downsampling and upsampling, and 1 without downsampling …