1. A method to configure a network of classifiers, wherein each classifier comprises executable code that classifies data, the method comprising: configuring, by a configuration application executing on a computer system, a plurality of classifiers in a network of classifiers, wherein each of said classifiers has a plurality of output branches that each output data to another classifier, wherein the configuring associates a plurality of operating points with each said output branch, wherein each operating point comprises a probability of determining that a data item input to the classifier has a particular characteristic and a probability that said determination falsely detected the characteristic; associating, by the configuration application, a different quality profile with each output point for each output branch in the plurality of classifiers, wherein the quality profile associated with the operating point used by the classifier to classify a particular data item is to be output from the classifier to a next classifier along with the data item; and storing the configured network of classifiers and quality profile associations in the computer system to be used for classifying future input data according to the network configuration and quality profile association.