A benchmark database for character recognition is an essential part for efficient and robust development. Unfortunately, there is no comprehensive handwritten dataset for Urdu language that would be used to compare the state of the art techniques in the field of optical character recognition. In this paper, we present a new and publically available dataset comprising 600 pages of handwritten Ur...

Summary This chapter discusses dataset characteristics that play a crucial role in many metalearning systems. Typically, they help to restrict the search given configuration space. The basic characteristic of target variable, for instance, determines choice right approach. If it is numeric, suggests suitable regression algorithm should be used, while if categorical, classification used instead....

In many microarray studies, a cluster defined on one dataset is sought in an independent dataset. If the cluster is found in the new dataset, the cluster is said to be "reproducible" and may be biologically significant. Classifying a new datum to a previously defined cluster can be seen as predicting which of the previously defined clusters is most similar to the new datum. If the new data clas...