Constructor: Dataset of example(object) for single document summarization

Constructor: Dataset of example(object) for multiple document summarization

without sent2sent and add residual connection add Document Nodes

without sent2sent and add residual connection

Vocabulary class for mapping between words and ids (integers)

Class representing a train/val/test example for single-document extractive summarization.

Class representing a train/val/test example for multi-document extractive summarization.

A two-feed-forward-layer module