Enhanced alert generation system based on real-time manipulation of datasets

A system comprising one or more processors and computer storage media storing instructions that, when executed by the system, cause the system to perform operations comprising:

• monitoring occurrences of existing alert definitions via applying the existing alert definitions to one or more datasets, the datasets storing information comprising a plurality of data items indicating a plurality of features, the existing alert definitions specifying respective expressions utilizing one or more of the features, wherein an occurrence of an existing alert definition indicates satisfaction of a specified expression and causes an associated alert to be generated for evaluation;
• and
• causing presentation of an interactive user interface configured to:
• receive specification of a customized alert definition specifying an expression, and
• present a visual representation of a comparison between occurrences of the existing alert definitions and occurrences of the customized alert definition wherein the system determines the respective occurrences based on evaluation of one or more expression datasets which are generated based on the specified expression and the one or more datasets.

Non-transitory computer storage media storing instructions that when executed by a system of one or more processors, cause the system to perform operations comprising:

• monitoring occurrences of existing alert definitions via applying the existing alert definitions to one or more datasets, the datasets storing information comprising a plurality of data items indicating a plurality of features, the existing alert definitions specifying respective expressions utilizing one or more of the features, wherein an occurrence of an existing alert definition indicates satisfaction of a specified expression and causes an associated alert to be generated for evaluation;
• and
• causing presentation of an interactive user interface configured to:
• receive specification of a customized alert definition specifying an expression, and
• present a visual representation of a comparison between occurrences of the existing alert definitions and occurrences of the customized alert definition wherein the system determines the respective occurrences based on evaluation of one or more expression datasets which are generated based on the specified expression and the one or more datasets.