Systems and methods are disclosed for managing data objects that include text content that are stored in a database. The management of text objects includes determining that a condition for a data object associated with a user has been satisfied. In response, a relevancy score for the data object is generated. The relevancy score is based on the text content of the data object and a density estimation model associated with the user. The density estimation is generated using a plurality of data objects that each include text content and that are associated with a plurality of users of a service associated with the data objects, and using a set of the plurality of data objects that are associated with the user. Irrelevancy actions or relevancy actions may be performed to the data object based on the relevancy score.