We present an interactive web tool for preprocessing microarray gene expression data. It analyses the data, suggests the most appropriate transformations and proceeds with them after user agreement. The normal preprocessing steps include scale transformations, management of missing values, replicate handling, flat pattern filtering and pattern standardization and they are required before perfor...

Data preprocessing converts raw data and signals into data representation suitable for application through a sequence of operations. The objectives of data preprocessing include size reduction of the input space, smoother relationships, data normalization, noise reduction, and feature extraction. Several data preprocessing algorithms, such as data values averaging, input space reduction, and da...

1 Department of Computer Technology and Architecture, University of Granada, Granada, Spain 2Department of Information and Computer Science, Aalto University School of Science, Espoo, Finland 3 IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain 4Computational Intelligence Group, Computer Science Faculty, University of the Basque Country, Paseo Manuel Lardizabal 1, Donostia/San Sebas...