One or more computing devices, systems, and/or methods are provided. In an example, a sequence of actions performed using a first interface on a first client device may be identified. A first negative signal probability may be determined based upon the sequence of actions. The first negative signal probability may correspond to a probability of receiving a negative signal associated with a first content item from the first client device responsive to presenting the first content item via the first interface on the first client device. The first interface on the first client device may be controlled based upon the first negative signal probability.