|
|
|
|
|
|
|
|
An excerpt from the corpus showing Shmoop summary paragraphs (left) and their chronological alignment to story paragraphs (right). |
Understanding stories is a challenging reading comprehension problem for machines as it requires reading a large volume of text and following long-range dependencies. In this paper, we introduce the Shmoop Corpus: a dataset of 231 stories that are paired with detailed multi-paragraph summaries for each individual chapter (7,234 chapters), where the summary is chronologically aligned with respect to the story chapter. From the corpus, we construct a set of common NLP tasks, including Cloze-form question answering and a simplified form of abstractive summarization, as benchmarks for reading comprehension on stories. We then show that the chronological alignment provides a strong supervisory signal that learning-based methods can exploit leading to significant improvements on these tasks. We believe that the unique structure of this corpus provides an important foothold towards making machine story comprehension more approachable.
Atef Chaudhury, Makarand Tapaswi, Seung Wook Kim, Sanja Fidler The Shmoop Corpus: A Dataset of Stories with Loosely Aligned Summaries arXiv: 1912.13082 |
|
We show that using chronological constraints helps improve alignment performance. Interestingly, state-of-the-art NLP models such as BERT are outperformed by a simple TF-IDF based representation for summary and story paragraphs. We believe that this may be due to the complexity of stories, several named characters, need for tracking long-range dependencies, and high variance in linguistic style (e.g., from Shakespeare to modern). |
Story: Oedipus the King | |
Question: Multiple Choice Answers: 1) Creon 2) Jocasta 3) Oedipus 4) Teiresias 5) Laius 6) Polybus 7) Apollo 8) Sphinx 9) Corinth 10) Thebes |
Aligned Paragraphs: |
Story: A Christmas Carol | |
Complete the summary: Multiple Choice Answers: 1) ... come over for Christmas dinner, but Scrooge isn't having any of it. 2) ... but what about the whole Jesus's birth thing? 3) ... catchphrase - Bah! Humbug!. 4) ... guys show up asking for any donations for the poor. 5) ... the cellar bursts open and out of it comes Marley's ghost! |
Aligned Paragraphs: |
We thank Shmoop for creating an amazing learning resource and allowing us to use their summary data for research purposes. The project was supported by DARPA Explainable AI (XAI) and NSERC Cohesa. This webpage template was borrowed from Poly-RNN++. |