Figure 5

Classification quality for the classification of archaea into methanogens and non-methanogens using the nearest neighbor classifier while omitting the pathway of methane synthesis. Omitting the pathway of methane synthesis (methane1) in our analyses, the classification based on the most relevant pathways still reaches perfect separation of methanogenic archaea and non-methanogenic archaea for all attribute subset selection methods used (green, ReliefF; yellow, SVMAttributeEval; blue, wrapper (naïve Bayes)). Classification based on all pathways (marked by a horizontal line) and based on randomly picked pathways (red) show lower classification quality.