1. A computer-implemented method comprising: disambiguating, by a disambiguation computer, a document feature from an electronic document by way of: extracting, by a feature extraction computer, the document feature from the electronic document, and linking, by a linking computer, the extracted document feature to one or more document features stored in a knowledge database of co-occurring document features of a plurality of electronic documents; assigning, by a scoring computer, to the disambiguated document feature a confidence score indicative of a level of confidence associated with a degree of disambiguation of the document feature; adding, by an in-memory database computer, the disambiguated document feature to the knowledge database of co-occurring document features when the disambiguated document feature matches a document feature of interest in an alert database based at least in part on the confidence score, the alert database storing one or more records of one or more features of interest, each respective record indicating one or more disambiguated features in the knowledgebase database matching the feature of interest; generating, by the in-memory database computer, a notification containing an alert formulated by the in-memory database computer according to one or more alert specifications in the record of the feature for the feature of interest; and adding, by the in-memory database computer, the disambiguated document feature to the knowledge database of co-occurring document features based at least in part on a distance in text from a link location in the electronic document, wherein the distance is based on a closeness in text to the link location in the electronic document.