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Evaluating Semantic Parsing against a Simple Web-based Question Answering Model

机译:针对基于Web的简单问答模型评估语义解析

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Semantic parsing shines at analyzing complex natural language that involves composition and computation over multiple pieces of evidence. However, datasets for semantic parsing contain many factoid questions that can be answered from a single web document. In this paper, we propose to evaluate semantic parsing-based question answering models by comparing them to a question answering baseline that queries the web and extracts the answer only from web snippets, without access to the target knowledge-base. We investigate this approach on ComplexQUESTIONS, a dataset designed to focus on compositional language, and find that our model obtains reasonable performance (~35 F_1 compared to 41 F_1 of state-of-the-art). We find in our analysis that our model performs well on complex questions involving conjunctions, but struggles on questions that involve relation composition and superlatives.
机译:语义分析的重点在于分析复杂的自然语言,其中涉及对多个证据的合成和计算。但是,用于语义解析的数据集包含许多可以从单个Web文档中回答的事实问题。在本文中,我们建议通过将基于语义解析的问题回答模型与仅在网络片段中访问网络并仅从网络摘要中提取答案的问题回答基线进行比较来评估它们,而无需访问目标知识库。我们在ComplexQUESTIONS(一个专注于组合语言的数据集)上研究了这种方法,发现我们的模型获得了合理的性能(与最新技术的41 F_1相比,达到了约35 F_1)。我们在分析中发现,我们的模型在涉及连词的复杂问题上表现良好,但是在涉及关系组成和最高级的问题上却表现不佳。

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