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As a result of the variety of documents adjustments each day, whereas the number of entities stays constant, all NCI indices in our analyses are normalised by dividing them by the number documents in the corpus, m. We’ve got statistically confirmed that the NCI is significantly above the level of fluctuations of the cohesiveness random null model (see Section 2 of the Supplementary Info ).
Figure 3 shows probably the most frequent entities in every of the semantic partitions as decided based mostly on the information corpus collected over the analysed interval. Much much less has been said concerning the influence of economic news on monetary markets. To fulfill the primary prerequisite, in our analysis, we rely on financial information documents which might be extracted by a novel text-stream processing pipeline, NewStream ( ), from a large number of Web sources.
Calculating the NCI through a singular-values approximation will be beneficial for big document-entity matrices as a result of this strategy is far more environment friendly in terms of computational time and memory consumption in contrast with the explicit calculation of the similarity matrix. Asian markets have turned lower because the correction that has hit international equities moved into another week, whereas the euro faced contemporary stress after German Chancellor didn’t kind a government on the weekend.