This document provides step-by-step instructions for reproducing the results of a bioassay paper using the Weka machine learning tool. It notes that datasets must be in ARFF format and different classifiers are used depending on the dataset size and imbalance. The goals are to find the most robust and versatile classifier for imbalanced bioassay data and optimal misclassification costs. It outlines running Weka, loading training and test datasets, building models with various classifiers like Naive Bayes and cost-sensitive variants, and evaluating performance on the test set, aiming for high true positives within 20% false positives.