Large Data-to-Text Generation
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Date
2023-05-16
Authors
Sarangian, Varnan
Journal Title
Journal ISSN
Volume Title
Publisher
University of Waterloo
Abstract
This thesis presents a domain-driven approach to sports game summarization, a specific instance of large data-to-text generation (DTG). We first address the data fidelity issue in the Rotowire dataset by supplementing existing input records and demonstrating larger relative improvements compared to previously proposed purification schemes. As this method further increases the total number of input records, we alternatively formulate this problem as a multimodal problem (i.e. visual data-to-text), discussing potential advantages over purely textual approaches and studying its effectiveness for future expansion. We work exclusively with pre-trained end-to-end transformers throughout, allowing us to evaluate the efficacy of sparse attention and multimodal encoder-decoders in DTG and providing appropriate benchmarks for future work.
To automatically evaluate the statistical correctness of generated summaries, we also extend prior work on automatic relation extraction and build an updated pipeline that incorporates low amounts of human-annotated data which are quickly inflated via data augmentation. By formulating this in a ”text-to-text” fashion, we are able to take advantage of LLMs and achieve significantly higher precision and recall than previous methods while tracking three times the number of unique relations. Our updated models are more consistent and reliable by incorporating human-verified data partitions into the training and evaluation process.