IMPORTANT: Paper submissions must conform to the Journal of Intelligent Information Systems format guidelines.

 Manuscripts must be submitted to the online submission system (select option Data-Driven User Behavioral Modeling: From Real-World Behavior to Knowledge, Algorithms, and Systems in the “Choose Article Type” section).

Submissions to this Special Issue must represent original material that has been neither submitted to, nor published in, any other journal. A submission based on one or more papers that appeared elsewhere should have at least 30% of novel valuable content that extends the original work (the original papers should be referenced and the novel contributions should be clearly stated in the submitted paper).