Model editing is where a model, such as a large language model, is “edited” to change the facts in the model. Machine unlearning is where a trained model is adjusted to “remove” one or more datapoints that were used to train the model, so that it behaves like a model that was trained without those datapoints. The datapoints to remove can either be specific datapoints from the training set, or classes of datapoints, such as all datapoints about bioweapons.
See also Knowledge Editing.