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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. 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 …

  3. 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 …

  4. 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

  5. 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 …

  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. 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.

  8. 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 …

  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 …