Visualizing sentiment: do you see what i mean?

Many tools exist for extracting and visualizing key information from a corpus of text documents. However often, one would like to assess the sentiment and feelings that arise from a single document. This paper describes an interactive service that visualizes the sentiment of a specific document. The service enables the user to visualize the sentimental polarity of each paragraph to get a detailed impression; to quickly detect the polarity of emotional words; to identify subjective sentences within the text, and the grade level of language used in each sentence. Participants in an initial qualitative evaluation found the service fast and useful.