A Generative Model for User Simulation in a Spatial Navigation Domain
| Autor: | Subramanian Ramamoorthy, Aciel Eshky, Ben Allison, Mark Steedman |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Eshky, A, Allison, B, Ramamoorthy, S & Steedman, M 2014, A Generative Model for User Simulation in a Spatial Navigation Domain . in Proceedings of the 14th Conference of the European Chapter of the Association for Computational Linguistics . Gothenburg, Sweden, pp. 626-635 . < http://www.aclweb.org/anthology/E14-1066 > EACL |
| Popis: | We propose the use of a generative model to simulate user behaviour in a novel task-oriented dialog domain, where user goals are spatial routes across artificial landscapes. We show how to derive an efficient feature-based representation of spatial goals, admitting exact inference and generalising to new routes. The use of a generative model allows us to capture a range of plausible behaviour given the same underlying goal. We evaluate intrinsically using held-out probability and perplexity, and find a substantial reduction in uncertainty brought by our spatial representation. We evaluate extrinsically in a human judgement task and find that our model’s behaviour does not differ significantly from the behaviour of real users. |
| Databáze: | OpenAIRE |
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