φ discourse is the same as φ A of the baseline model and the difference is explained in section 6.3. φ [author ] and φ [reader ] become active when e is [author]/[reader] or the discourse entity corresponding to the A/R mention.
when e is the discourse entity corresponding to the A/R mention, both φ discourse and φ Because φ [author ] , φ [reader ] , φ [US :person] and φ [US :others] correspond to the pseudo entities, which are not mentioned explicitly, we cannot use word information such as expressions and categories.