Abstract: A processor is configured to create a log data specific lexicon wherein each word in the log data specific lexicon corresponds to a weighted sentiment score with a binary polarity. The processor is further configured to assign a sentiment value to a log message based on the weighted sentiment scores of words appearing in the log message. The processor may further determine an alert type for the log message based on the sentiment value, a class indicating an issue the log message, and a priority of the log message, where the alert type is preconfigured with a set of alert type values of varying risk levels and wherein a system alert contains a predefined set of key performance indicators corresponding to the alert type.

Abstract: Methods, computer program products, and systems are presented. The methods include, for instance: creating a log data specific lexicon based on log data samples, each word in the log data specific lexicon corresponding to a weighted sentiment score with a binary polarity. A log message is obtained, and a sentiment value of the log message is assigned based on respective weighted sentiment scores of words appearing in the log message. The log message is classified for a class indicating an issue the log message addresses. An alert type for the log message is determined based on the sentiment value, the class, and a priority of the log message, and a system alert including a set of key performance indicators according to the alert type is produced to a user.

Abstract: Methods, computer program products, and systems are presented. The methods include, for instance: creating a log data specific lexicon based on log data samples, each word in the log data specific lexicon corresponding to a weighted sentiment score with a binary polarity. A log message is obtained, and a sentiment value of the log message is assigned based on respective weighted sentiment scores of words appearing in the log message. The log message is classified for a class indicating an issue the log message addresses. An alert type for the log message is determined based on the sentiment value, the class, and a priority of the log message, and a system alert including a set of key performance indicators according to the alert type is produced to a user.