1. A method in a computerized environment, said method comprising: obtaining a training set of log entries, wherein the log entries describing an operation of a system, wherein the log entries comprise at least one log entry which is indicative of a non-erroneous operation of the system; automatically determining an approximated matching function between a log entry and an at least one cluster based on the training set of the log entries, wherein said automatically determining the approximated matching function is performed using a machine learning process; obtaining a set of log entries describing operation of the system; associating the set of log entries with the at least one cluster, based on the approximated matching function; and providing an indication referring to the at least one cluster associated with the first portion of the log entries and the second portion of the log entries.