Tiple, PedroCavique, LuísMarques, Nuno C.2018-11-062018-11-0620160266-47201468-0394http://hdl.handle.net/10400.2/7649Financial data provides a valuable up‐to‐date knowledge of the world economy. However, it is presented in extremely large data volumes, in diverse formats, and is constantly being updated at a high speed. The Ramex‐Forum algorithm is oriented to guide financial experts in finding new and relevant information.We present a sensitivity analysis and newvisualizations using an improved version of the Ramex‐Forum algorithm. The proposed algorithm is applied to two case studies – the petroleum production chain and the European financial institutions risk analysis. Different combinations of parameters and new ways to visualize data are used. Results highlight the importance of Ramex‐Forum for analysing relevant relationships in price variations in financial markets.engBusiness intelligenceData analysisEuropean financial dataPetroleum production chainRule learningjournal articlehttps://doi.org/10.1111/exsy.12174