Papers › Importance of Search and Evaluation Strategies in Neural Dialogue Modeling

Importance of Search and Evaluation Strategies in Neural Dialogue Modeling

2 Nov 2018WS 2019 10arXiv:1811.00907archive 2025-07-28

Ilia Kulikov, Alexander H. Miller, Kyunghyun Cho, Jason Weston

We investigate the impact of search strategies in neural dialogue modeling. We first compare two standard search algorithms, greedy and beam search, as well as our newly proposed iterative beam search which produces a more diverse set of candidate responses. We evaluate these strategies in realistic full conversations with humans and propose a model-based Bayesian calibration to address annotator bias. These conversations are analyzed using two automatic metrics: log-probabilities assigned by the model and utterance diversity. Our experiments reveal that better search algorithms lead to higher rated conversations. However, finding the optimal selection mechanism to choose from a more diverse set of candidates is still an open question.

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nyu-dl/dl4dial-bayesian-calibration mentioned on GitHubpytorchBSD-3-Clause report

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Dialogue GenerationDiversityOpen-Ended Question Answering

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