Evaluation Pipeline for Models

[WGierke]

As discussed in #131 it would be helpful to have a consistent pipeline to evaluate prediction models. This way we get to know how well the currently implemented models are, which ones need to be improved and how well a new model performs. The pipeline should calculate the appropriate metrics that have been specified in #221 while some of the are already available here.

Acceptance Criteria

• [ ] all evaluation methods take a model and a parameter whether to use 5-fold validation or a test set (default)
• [x] for classification calculate accuracy, Log Loss
• [ ] for identification calculate accuracy, Log Loss
• [ ] for segmentation calculate Dice coefficient, Hausdorff distance, Jaccard index, sensitivity, specificity
• [ ] for all of them calculate data IO, disk space usage, memory usage, prediction time (if not (easily) possible, specify why and how to manually measure it)
• [ ] for all of them calculate the training time

Please refer to the PR template for further explanations of the metrics.

[vessemer]

For the both identification and classification (false positive reduction) tasks was proposed a handy evaluation framework by the LUNA16 authors. They employed Free-Response Receiver Operating Characteristic (FROC) and competition performance metric (CPM). It computes an average of the seven sensitivities measured at several false positives per scan (FPPS) thresholds, more concretely, at each FPPS ∈ {0.125, 0.25, 0.5, 1, 2, 4, 8} true positive rate was computed. Mean of which forms the CPM. From my point of view, it worth to pay attention to the CPM neither the logloss. I can work on that to adjust their pipeline, if no one mind.

[reubano]

@vessemer great observation! I see that they provide evaluation code as well. So yes, adjusting it to fit our use case will be extremely useful!