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Andrew O. Arnold

5 accepted papers

2022

Self-Supervised Speaker Verification with Simple Siamese Network and Self-Supervised Regularization

ICASSP 2022accepted

Training speaker-discriminative and robust speaker verification systems without speaker labels is still challenging and worthwhile to explore. In this study, we propose an effective self-supervised learning framework and a novel regularization strategy to facilitate self-supervised speaker represent…

Cited by 0SourceScholar
2021

Answering Ambiguous Questions through Generative Evidence Fusion and Round-Trip Prediction

ACL 2021long

In open-domain question answering, questions are highly likely to be ambiguous because users may not know the scope of relevant topics when formulating them. Therefore, a system needs to find possible interpretations of the question, and predict one or multiple plausible answers. When multiple plaus…

2021

Improving Factual Consistency of Abstractive Summarization via Question Answering

ACL 2021long

A commonly observed problem with the state-of-the art abstractive summarization models is that the generated summaries can be factually inconsistent with the input documents. The fact that automatic summarization may produce plausible-sounding yet inaccurate summaries is a major concern that limits…

2021

Pairwise Supervised Contrastive Learning of Sentence Representations

EMNLP 2021main

Many recent successes in sentence representation learning have been achieved by simply fine-tuning on the Natural Language Inference (NLI) datasets with triplet loss or siamese loss. Nevertheless, they share a common weakness: sentences in a contradiction pair are not necessarily from different sema…

2021

Supporting Clustering with Contrastive Learning

NAACL 2021long

Unsupervised clustering aims at discovering the semantic categories of data according to some distance measured in the representation space. However, different categories often overlap with each other in the representation space at the beginning of the learning process, which poses a significant cha…