By Balder ten Cate,Alessandra Mileo
This publication constitutes the refereed complaints of the ninth foreign convention on net Reasoning and Rule platforms, RR 2015, held in Berlin, Germany, in August 2015. The five complete papers, four technical communications awarded including four invited talks have been rigorously reviewed and chosen from sixteen submissions. the size and the heterogenous nature of internet facts poses many demanding situations, and turns simple projects comparable to question answering and knowledge modifications into complicated reasoning difficulties. Rule-based platforms have stumbled on many functions during this sector. The RR convention welcomes unique study from all components of internet Reasoning and Rule structures. themes of specific curiosity are: solution set programming, complicated occasions, datalog, description logics, event-condition-action principles, details extraction, and good judgment programming.