1. A method comprising: identifying, by one or more devices, one or more particular topics based on one or more particular documents; identifying, by the one or more devices, one or more portions, of a target document, that correspond to a particular topic of the one or more particular topics; determining, by the one or more devices, a measure of credibility of the target document based on the one or more portions that correspond to the particular topic; receiving, by the one or more devices, information regarding a selection of a sentiment score that affects the measure of credibility of the target document; and providing, by the one or more devices and for display, at least one particular portion, of the one or more portions of the target document, corresponding to the sentiment score based on the selection of the sentiment score.
9. The method of claim 1 , further comprising: providing, for display, information regarding key words describing the one or more particular topics and the measure of credibility of the target document.