Visualisation of Cumulative Sentiment

In the context of reputation of large corporate organisations, accumulating time series of sentiment values provides an illuminating view of company performance that is not reflected in the balance sheet. Calculating cumulative sentiment enables a risk manager to see 'at a glance' whether the sentiment trend is positive or negative in cases where daily sentiment varies considerably. Using a large data set, a power law and a lookup table are developed so that the sentiment trend of an organisation can be compared with those of other organisations without any knowledge of those others. The resulting decision rule is easy to apply. Its strength lies in its simplicity. Significantly, the linear nature of most cumulative sentiment plots imply that it is very difficult to reverse sentiment direction.