Systems and methods for determining semantically related terms using an
active learning framework such as Transductive Experimental Design are
disclosed. Generally, to enhance a keyword suggestion tool, an active
learning module trains a model to predict whether a term is relevant to a
user. The model is then used to present the user with terms that have
been determined to be relevant based on the model so that an online
advertisement service provider may more efficiently provide a user with
terms that are semantically related to a seed set.