19. The system of claim 11 , wherein the assigned orientation value is utilized to determine whether to display the received block of text to a user.
11. A system for assessing sentiment of text, comprising: a computer processor; a crawler module configured to collect a plurality of user reviews from a plurality of websites, each user review associated with a rating value of a plurality of rating values; an extraction system configured to: identify parts of text from the plurality of user reviews; determine a distribution of each part of the parts of text across the plurality of rating values; calculate, based on the distribution, a probability score representing a probability of a strength of each part of text for a corresponding rating value of the plurality of rating values; and store the parts of text, the distributions, and the probability scores in a training corpus; an input module for receiving a block of text associated with a new review; a sentence segmentation module which segments the received block of text into one or more parts, where the parts are identified as a first type; and an orientation tendency module executing on the computer processor and configured to: obtain probability scores associated with the parts from the training corpus; perform a central tendency calculation for the new review by evaluating the probability scores associated with the parts; assign an orientation value to the new review based at least on the central tendency calculation, the orientation value reflecting sentiment of the received block of text, wherein the probability of the strength of a part of text for a particular rating value is degraded by the probabilities of the strength of that part of text for other rating values.