1. A method for determining compliance of content with a content policy of the online system, the method comprising: receiving a content item comprising text and one or more images; extracting a plurality of text signals from the text; extracting a plurality of image signals from the one or more images; inputting the plurality of text signals and the plurality of image signals into a trained model, the model outputting a confidence value expressing a likelihood of compliance with a content policy of an online system; determining, based on the confidence value a compliance classification of the content item.