How is Richness calculated?

Richness in the context of data analysis, particularly in document review scenarios, refers specifically to the measure of relevant or positive-coded documents within a given dataset. It is determined by the ratio of the number of documents that have been positively coded (indicating that they contain relevant information) to the total number of documents in the dataset. This calculation provides insight into the proportion of valuable or useful information within the set, which can be crucial for understanding the efficiency and effectiveness of the document review process.

This approach focuses on the quality of the documents rather than merely their quantity or the operational effort involved in reviewing them. By emphasizing the number of positive-coded documents in relation to the total document count, richness gives a clear indication of the dataset's overall relevance and aids in decision-making processes regarding further review or analysis. This makes it a vital metric when assessing how well a review process is performing in terms of yielding useful results.