A featureGroupsSet objectHierarchy:featureGroups    |-- featureGroupsSet      |-- featureGroupsScreeningSet---Algorithm: greedy-setFeature groups: M199_R331_1, M199_R331_1_I0.73, M199_R377_2, M199_R377_2_I0.79, M201_R365_3, M201_R365_3_I0.77, ... (383 total)Features: 1028 (2.7 per group)Has IMS data: yesHas normalized intensities: FALSEInternal standards used for normalization: noPredicted concentrations: nonePredicted toxicities: noneAnalyses: blank-pos-1, blank-pos-2, blank-pos-3, standard-pos-1, standard-pos-2, standard-pos-3, ... (12 total)Replicates: blank-pos, standard-pos, blank-neg, standard-neg (4 total)Replicates used as blank: blank-pos, blank-neg (2 total)Sets: positive, negative