'It doesn't look good for a date': Transforming Critiques into Preferences for Conversational Recommendation Systems
| Autor: | Bursztyn, Victor S., Healey, Jennifer, Lipka, Nedim, Koh, Eunyee, Downey, Doug, Birnbaum, Larry |
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| Rok vydání: | 2021 |
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| Druh dokumentu: | Working Paper |
| Popis: | Conversations aimed at determining good recommendations are iterative in nature. People often express their preferences in terms of a critique of the current recommendation (e.g., "It doesn't look good for a date"), requiring some degree of common sense for a preference to be inferred. In this work, we present a method for transforming a user critique into a positive preference (e.g., "I prefer more romantic") in order to retrieve reviews pertaining to potentially better recommendations (e.g., "Perfect for a romantic dinner"). We leverage a large neural language model (LM) in a few-shot setting to perform critique-to-preference transformation, and we test two methods for retrieving recommendations: one that matches embeddings, and another that fine-tunes an LM for the task. We instantiate this approach in the restaurant domain and evaluate it using a new dataset of restaurant critiques. In an ablation study, we show that utilizing critique-to-preference transformation improves recommendations, and that there are at least three general cases that explain this improved performance. Comment: Accepted to EMNLP 2021's main conference |
| Databáze: | arXiv |
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