Ontology-augmented interface

A tangible, non-transitory, machine-readable medium storing instructions that, when executed by a computer system, effectuate operations comprising:

• obtaining, with a computer system, a first message provided by a user from a client computing device indicating a natural-language text document during a session;
• selecting, with the computer system, an ontology graph based on an account parameter of a user account identifying the user;
• sending, with the computer system, a user interface (UI) to the client computing device via a response to the first message, the UI comprising:
• a display of the natural-language text document;
• a visual indicator indicating an n-gram that maps to a vertex of the ontology graph;
• a UI element that, when interacted with, causes the client computing device to send a second message to the computer system, the second message comprising the n-gram and an update value associated with the n-gram, the update value indicating an change to the vertex or an addition to the vertex;
• obtaining, with the computer system, the second message from the client computing device after an interaction with the UI element to update the ontology graph based on the n-gram;
• updating, with the computer system, the vertex based on the update value;
• determining, with the computer system, a category associated with the vertex based on the ontology graph;
• determining, with the computer system, a set of affected decision trees based on the vertex of the ontology graph;
• updating, with the computer system, a decision tree of the set of affected decision trees based on the update value to the ontology graph;
• and
• labeling, with the computer system, a record based on a selection corresponding with the update value using the decision tree.