Assessing Data Usefulness for Failure Analysis in Anonymized System Logs. Proceedings of the 17th International Symposium on Parallel and Distributed Computing (ISPDC), 164--171, Geneva, Switzerland, June 2018. [PUMA: Encoding, privacy, myOwn High usefulness, Data performance anonymization, computing, high failure Distributed detection, dissertation analysis, databases, Measurement, Encryption, Privacy, encoding, behavior]