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Ground-Motion Prediction Model Based on Neural Networks to Extract Site Properties from Observational Records
https://nied-repo.bosai.go.jp/records/3391
https://nied-repo.bosai.go.jp/records/3391d3d9192c-f86f-4ed5-83cf-dc528fe5fb1b
| Item type | researchmap(1) | |||||||||||||||||
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| 公開日 | 2023-03-30 | |||||||||||||||||
| タイトル | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| タイトル | Ground-Motion Prediction Model Based on Neural Networks to Extract Site Properties from Observational Records | |||||||||||||||||
| 著者 |
Tomohisa Okazaki
× Tomohisa Okazaki
× Nobuyuki Morikawa
× Asako Iwaki
× Hiroyuki Fujiwara
× Tomoharu Iwata
× Naonori Ueda
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| 抄録 | ||||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||||
| 内容記述 | ABSTRACT Choosing the method for inputting site conditions is critical in reducing the uncertainty of empirical ground-motion models (GMMs). We apply a neural network (NN) to construct a GMM of peak ground acceleration that extracts site properties from ground-motion data instead of referring to ground condition variables given for each site. A key structure of the model is one-hot representations of the site ID, that is, specifying the collection site of each ground-motion record by preparing input variables corresponding to all observation sites. This representation makes the best use of the flexibility of NN to obtain site-specific properties while avoiding overfitting at sites where a small number of strong motions have been recorded. The proposed model exhibits accurate and robust estimations among several compared models in different aspects, including data-poor sites and strong motions from large earthquakes. This model is expected to derive a single-station sigma that evaluates the residual uncertainty under the specification of estimation sites. The proposed NN structure of one-hot representations would serve as a standard ingredient for constructing site-specific GMMs in general regions. |
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| 言語 | en | |||||||||||||||||
| 書誌情報 |
en : Bulletin of the Seismological Society of America 発行日 2021-08-01 |
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| 出版者 | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 出版者 | Seismological Society of America ({SSA}) | |||||||||||||||||
| ISSN | ||||||||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||||||||
| 収録物識別子 | 1943-3573 | |||||||||||||||||
| DOI | ||||||||||||||||||
| 関連識別子 | 10.1785/0120200339 | |||||||||||||||||
