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- W4385570832 abstract "Despite the recent advances in open-domain dialogue systems, building a reliable evaluation metric is still a challenging problem. Recent studies proposed learnable metrics based on classification models trained to distinguish the correct response. However, neural classifiers are known to make overly confident predictions for examples from unseen distributions. We propose DENSITY, which evaluates a response by utilizing density estimation on the feature space derived from a neural classifier. Our metric measures how likely a response would appear in the distribution of human conversations. Moreover, to improve the performance of DENSITY, we utilize contrastive learning to further compress the feature space. Experiments on multiple response evaluation datasets show that DENSITY correlates better with human evaluations than the existing metrics." @default.
- W4385570832 created "2023-08-05" @default.
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- W4385570832 date "2023-01-01" @default.
- W4385570832 modified "2023-09-24" @default.
- W4385570832 title "DEnsity: Open-domain Dialogue Evaluation Metric using Density Estimation" @default.
- W4385570832 doi "https://doi.org/10.18653/v1/2023.findings-acl.896" @default.
- W4385570832 hasPublicationYear "2023" @default.
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