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Negative Polarity Items in English: A Deep Learning Model and Statistical Analysis

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This paper examined English negative polarity items (NPIs) with a deep learning model and statistical analysis. Warstadt et al. (2019a) developed a deep learning model with the Bidirectional Encoder Representations from Transformers (BERT), and the study analyzed English NPIs. Their dataset included a total of 400,000 sentences, and they encoded a few linguistic variables per each sentence. This paper took the same dataset in Warstadt et al. (2019a), but one more factor (Monotonicity) was included. As for the deep learning model, this paper took the BERTLARGE model in Lee (2021), where the syntactic acceptability was calculated with numeric scores (0~100), rather than measured by the binary classification. After the acceptability scores were calculated per each sentence, the scores were converted with z-scores, and statistical analysis was conducted with six linguistic factors and interactions of three factors. Through the analysis, the followings were observed: (i) an NPI had to exist within the scope of the licensor, (ii) downward entailment also played a significant role in the NPI licensing, and (iii) the interaction between NPI licensor and scope played more crucial roles in the NPI licensing.

Abstract

This paper examined English negative polarity items (NPIs) with a deep learning model and statistical analysis. Warstadt et al. (2019a) developed a deep learning model with the Bidirectional Encoder Representations from Transformers (BERT), and the study analyzed English NPIs. Their dataset included a total of 400,000 sentences, and they encoded a few linguistic variables per each sentence. This paper took the same dataset in Warstadt et al. (2019a), but one more factor (Monotonicity) was included. As for the deep learning model, this paper took the BERTLARGE model in Lee (2021), where the syntactic acceptability was calculated with numeric scores (0~100), rather than measured by the binary classification. After the acceptability scores were calculated per each sentence, the scores were converted with z-scores, and statistical analysis was conducted with six linguistic factors and interactions of three factors. Through the analysis, the followings were observed: (i) an NPI had to exist within the scope of the licensor, (ii) downward entailment also played a significant role in the NPI licensing, and (iii) the interaction between NPI licensor and scope played more crucial roles in the NPI licensing.

참고문헌 (36)

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