33,324 human-written summaries for 31,483 products. Were produced for EMNLP 2021 Learning Opinion Summarizers by Selecting Informative Reviews. This is the largest dataset for opinion summarization which was extracted from various online platforms.

300 summaries for 100 businesses (3 for each), written in the formal writing style. Were produced for Few-Shot Learning For Opinion Summarization, EMNLP 2020, using Amazon Mechanical Turk.

180 summaries for 60 products (3 for each), written in the formal writing style. Were produced for EMNLP 2020 Few-Shot Learning for Opinion Summarization, using Amazon Mechanical Turk.

180 summaries for 60 products (3 for each). Were produced for ACL 2020 Unsupervised Opinion Summarization as Copycat-Review Generation. They were carefully created on Amazon Mechanical Turk.