Add Optuna-weighted SSIM loss and align validation selection#32
Open
MattsonCam wants to merge 12 commits into
Open
Add Optuna-weighted SSIM loss and align validation selection#32MattsonCam wants to merge 12 commits into
MattsonCam wants to merge 12 commits into
Conversation
added 6 commits
July 15, 2026 12:16
added 6 commits
July 15, 2026 16:05
Run ID:5cbf036ef8284509850ab17794c3271a Run Name:amusing-fly-350 Optimization of a DAPI-to-Gold image-to-image translation model with: **Note**: This run may have included uncentered cached crops once transformed - ConvNeXtUNet Generator - Single 2D crop input and single 2D crop target - Cache-backed filtered nucleus crops generated from the configured data directory - Train-split z-score normalization for inputs and targets - L1 plus Optuna-weighted SSIM optimization objective in z-score space with denormalized L2, PSNR, SSIM, and Pearson correlation metric logging - Resampling of dataset w/o anti-aliasing -> dtype clipping (to stay within the correct range) -> z-score normalization - Means and stds from the training set were stored for z-scoring of the validation set - No final activation function after the model output (such as sigmoid)
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Adds a mixed L1 plus auxiliary SSIM training objective, with the SSIM contribution tuned per trial by Optuna. The branch also logs batch-level L1, SSIM, and total losses during training, and aligns validation-based checkpoint selection and patience tracking with the same z-score-space total loss used for optimization, while keeping the existing denormalized image-quality metrics unchanged.