Abstract: A computer device for detecting correlations within data received from a technical system is provided. The computer device includes a receiving unit for receiving numerical data from the technical system, a processing unit for processing the numerical data by converting the numerical data into text-based data and by detecting predefined events in the text-based data, a comparison unit for comparing the detected events with predefined queries, wherein the predefined queries describe correlations between detected events, to provide a comparison result, and a signaling unit for outputting a signal based on the provided comparison result. By converting numerical data into text-based data, correlations within the data can be easily detected based on predefined queries, which are also in text-based form. Thus, users without further knowledge of the numerical data can set queries. Further, a technical system including such a computer device and a corresponding method are provided.