The Innovative outlier detection - Special Session at the 2017 IEEE International Conference on INnovations in Intelligent SysTems and Applications (INISTA 2017) is dedicated to broadly understood issues of outlier detection in large data sets, including Big Data. Detection of outliers is the basis for decision-making processes, classification, grouping and methods of intelligence. The problem of anomaly detection encompasses a wide spectrum of applied methods. IOD session is therefore an opportunity to identify new research directions and presentation of original research results. It is also an opportunity for exchanging and diffusing innovative and practical experience in this field.