1. A system for assessing sentiment of text, comprising: an input device; a display; and processing circuitry, wherein the processing circuitry is configured to control the system to at least: receive text input via the input device, the text associated with a review relating to a particular topic; and as the text is being inputted, determine, based on respective scores calculated for each of one or more words included in the received text, a real-time orientation value reflecting a sentiment of the received text; and modify an appearance of a visual display element on the display based on the determined real-time orientation value.
8. The system according to claim 1 , wherein the real-time orientation value is determined by extracting one or more words from the received text; accessing a training corpus to identify probability scores associated with the words; performing a central tendency calculation for the received text by evaluating the probability scores associated with the words; and assigning the orientation value to the received text based at least on the central tendency calculation.