... surrogate model | Taisei Saida

surrogate model

Attention機構を周波数領域に適用する説明性のある地震応答代替モデルの構築(優秀ポスター賞)

周波数領域へのAttention機構適用による説明性のある地震応答代替モデルの構築

地震による構造物の被災度を確率論的に評価するために、地震動の不確定性を考慮する必要がある。しかし、不確定性を考慮し、数値計算を繰り返すのは計算コストが高い。本研究では、地震応答解析を深層学習器で置き換える代替モデルを用いることで計算コストの低減を図る。代替モデルには、Attention機構と説明性を有する畳み込み演算によって、なぜその予測結果に至ったのかを、周波数領域への寄与度計算を通して説明可能なモデル構築を行った。検証では橋脚の地震応答解析に対する代替モデルを構築し、寄与度の高かった周波数帯 …

A seismic response prediction surrogate model with engineering explainability using attention-embedded CNN

Civil structures should keep functionality during earthquake events, necessitating detailed seismic evaluations. However, to account for uncertainties in seismic loading, nonlinear time history analyses must be repeated many times, increasing the …

AttentionCNNを用いた工学的説明性の高い地震応答予測サロゲートモデルの構築

In this study, an explainable seismic response surrogate model, which can be deemed valid from an engineering perspective, was developed. The model employs SincNet convolution to segment features by frequency band and an attention mechanism to …

高次元不確定性を扱う構造信頼性解析への正則化深層カーネル学習サロゲートモデル構築(シンポジウム講演概要)

This study presents a regularized Deep Kernel Learning (DKL) model for reliability analysis with high-dimensional uncertainties. Combining Deep Learning (DL) and Gaussian Process Regression (GPR), the model leverages DL for feature extraction and GPR …

深層カーネル学習代替モデルによる高架橋システムの地震フラジリティ解析

Seismic fragility analysis of structures such as bridges must consider not only the uncertainties in the loads to which the structure is subjected, but also the uncertainties in the physical properties of the structure due to deterioration and other …

橋梁の地震フラジリティ解析効率化のためのガウス過程回帰代替モデル構築(招待講演)

Gaussian Process Regression Surrogate Model for Seismic Vulnerability Assessment of Highway Bridge Structure System

System fragility is required especially for the vulnerability assessment of existing bridges that configure transportation network as a structural system. Here, it is essential to consider not only variation of input ground motions but also the …

高次元不確定性を扱う構造信頼性解析を効率化するガウス過程ベース代替モデル構築(招待講演)

PINN構造振動解析のARによるリアルタイム可視化

Real-time simulation of structures and structural members enables intuitive and immediate understanding of displacements and stresses, contributing to efficient decision making in design and maintenance. In this study, real-time simulation of …