Figure 2 : Semantic partitioning.

From: Cohesiveness in Financial News and its Relation to Market Volatility

Figure 2

Semantic partitioning for two entity semantic groups - “Financial Institutions” and “Financial Context” - and three document semantic groups - “day 1”, “day 2” and “day 3”. The Frobenius norms of the shaded regions quantify the cohesiveness within each semantic group, whereas the Frobenius norms of all other regions quantify the cohesiveness between pairs of semantic groups.