As discussed in Section SECREF2 , a variety of features that measure salience of an entity in text are available from the NLP community. We reimplemented the ones in Dunietz and Gillick BIBREF11 . This includes a variety of features, e.g. positional features, occurrence frequency and the internal POS structure of the entity and the sentence it occurs in.  
 Question: What features are used to represent the salience and relative authority of entities?
Salience features positional features, occurrence frequency and the internal POS structure of the entity and the sentence it occurs in.
The relative authority of entity features:   comparative relevance of the news article to the different entities occurring in it.