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rename pira to pirate
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docs/zh/api/arch.md

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- AMGNet
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- MLP
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- ModifiedMLP
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- PiraNet
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- PirateNet
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- DeepONet
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- DeepPhyLSTM
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- LorenzEmbedding

docs/zh/examples/allen_cahn.md

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wget -nc https://paddle-org.bj.bcebos.com/paddlescience/datasets/AllenCahn/allen_cahn.mat -P ./dataset/
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# windows
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# curl https://paddle-org.bj.bcebos.com/paddlescience/datasets/AllenCahn/allen_cahn.mat --output ./dataset/antiderivative_unaligned_train.npz
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python allen_cahn_piranet.py
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python allen_cahn_piratenet.py
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```
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=== "模型评估命令"
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wget -nc https://paddle-org.bj.bcebos.com/paddlescience/datasets/AllenCahn/allen_cahn.mat -P ./dataset/
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# windows
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# curl https://paddle-org.bj.bcebos.com/paddlescience/datasets/AllenCahn/allen_cahn.mat --output ./dataset/antiderivative_unaligned_train.npz
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python allen_cahn_piranet.py mode=eval EVAL.pretrained_model_path=https://paddle-org.bj.bcebos.com/paddlescience/models/AllenCahn/allen_cahn_piranet_pretrained.pdparams
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python allen_cahn_piratenet.py mode=eval EVAL.pretrained_model_path=https://paddle-org.bj.bcebos.com/paddlescience/models/AllenCahn/allen_cahn_piratenet_pretrained.pdparams
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```
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=== "模型导出命令"
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``` sh
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python allen_cahn_piranet.py mode=export
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python allen_cahn_piratenet.py mode=export
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```
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=== "模型推理命令"
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wget -nc https://paddle-org.bj.bcebos.com/paddlescience/datasets/AllenCahn/allen_cahn.mat -P ./dataset/
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# windows
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# curl https://paddle-org.bj.bcebos.com/paddlescience/datasets/AllenCahn/allen_cahn.mat --output ./dataset/antiderivative_unaligned_train.npz
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python allen_cahn_piranet.py mode=infer
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python allen_cahn_piratenet.py mode=infer
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```
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| 预训练模型 | 指标 |
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|:--| :--|
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| [allen_cahn_piranet_pretrained.pdparams](https://paddle-org.bj.bcebos.com/paddlescience/models/AllenCahn/allen_cahn_piranet_pretrained.pdparams) | L2Rel.u: 8.32403e-06 |
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| [allen_cahn_piratenet_pretrained.pdparams](https://paddle-org.bj.bcebos.com/paddlescience/models/AllenCahn/allen_cahn_piratenet_pretrained.pdparams) | L2Rel.u: 8.32403e-06 |
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## 1. 背景简介
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### 3.1 模型构建
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在 Allen-Cahn 问题中,每一个已知的坐标点 $(t, x)$ 都有对应的待求解的未知量 $(u)$,
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,在这里使用 PiraNet 来表示 $(t, x)$ 到 $(u)$ 的映射函数 $f: \mathbb{R}^2 \to \mathbb{R}^1$ ,即:
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,在这里使用 PirateNet 来表示 $(t, x)$ 到 $(u)$ 的映射函数 $f: \mathbb{R}^2 \to \mathbb{R}^1$ ,即:
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$$
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u = f(t, x)
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$$
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上式中 $f$ 即为 PiraNet 模型本身,用 PaddleScience 代码表示如下
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上式中 $f$ 即为 PirateNet 模型本身,用 PaddleScience 代码表示如下
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``` py linenums="63"
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--8<--
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examples/allen_cahn/allen_cahn_piranet.py:63:64
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examples/allen_cahn/allen_cahn_piratenet.py:63:64
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--8<--
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```
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为了在计算时,准确快速地访问具体变量的值,在这里指定网络模型的输入变量名是 `("t", "x")`,输出变量名是 `("u")`,这些命名与后续代码保持一致。
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接着通过指定 PiraNet 的层数、神经元个数,就实例化出了一个拥有 3 个 PiraBlock,每个 PiraBlock 的隐层神经元个数为 256 的神经网络模型 `model`, 并且使用 `tanh` 作为激活函数。
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接着通过指定 PirateNet 的层数、神经元个数,就实例化出了一个拥有 3 个 PiraBlock,每个 PiraBlock 的隐层神经元个数为 256 的神经网络模型 `model`, 并且使用 `tanh` 作为激活函数。
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``` yaml linenums="34"
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--8<--
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examples/allen_cahn/conf/allen_cahn_piranet.yaml:34:40
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examples/allen_cahn/conf/allen_cahn_piratenet.yaml:34:40
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--8<--
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```
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``` py linenums="66"
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--8<--
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examples/allen_cahn/allen_cahn_piranet.py:66:67
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examples/allen_cahn/allen_cahn_piratenet.py:66:67
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--8<--
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```
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``` py linenums="69"
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--8<--
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examples/allen_cahn/allen_cahn_piranet.py:69:81
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examples/allen_cahn/allen_cahn_piratenet.py:69:81
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--8<--
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```
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``` py linenums="94"
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--8<--
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examples/allen_cahn/allen_cahn_piranet.py:94:110
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examples/allen_cahn/allen_cahn_piratenet.py:94:110
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--8<--
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```
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``` yaml linenums="41"
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--8<--
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examples/allen_cahn/conf/allen_cahn_piranet.yaml:41:42
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examples/allen_cahn/conf/allen_cahn_piratenet.yaml:41:42
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--8<--
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```
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``` py linenums="112"
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--8<--
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examples/allen_cahn/allen_cahn_piranet.py:112:125
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examples/allen_cahn/allen_cahn_piratenet.py:112:125
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--8<--
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```
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在微分方程约束、初值约束构建完毕之后,以刚才的命名为关键字,封装到一个字典中,方便后续访问。
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``` py linenums="126"
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--8<--
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examples/allen_cahn/allen_cahn_piranet.py:126:130
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examples/allen_cahn/allen_cahn_piratenet.py:126:130
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--8<--
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```
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``` yaml linenums="50"
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--8<--
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examples/allen_cahn/conf/allen_cahn_piranet.yaml:50:63
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examples/allen_cahn/conf/allen_cahn_piratenet.yaml:50:63
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--8<--
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```
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``` py linenums="132"
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--8<--
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examples/allen_cahn/allen_cahn_piranet.py:132:136
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examples/allen_cahn/allen_cahn_piratenet.py:132:136
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--8<--
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```
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``` py linenums="138"
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--8<--
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examples/allen_cahn/allen_cahn_piranet.py:138:156
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examples/allen_cahn/allen_cahn_piratenet.py:138:156
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--8<--
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```
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``` py linenums="158"
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--8<--
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examples/allen_cahn/allen_cahn_piranet.py:158:172
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examples/allen_cahn/allen_cahn_piratenet.py:158:184
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--8<--
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```
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## 4. 完整代码
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``` py linenums="1" title="allen_cahn_piranet.py"
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``` py linenums="1" title="allen_cahn_piratenet.py"
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--8<--
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examples/allen_cahn/allen_cahn_piranet.py
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examples/allen_cahn/allen_cahn_piratenet.py
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--8<--
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```
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在计算域上均匀采样出 $201\times501$ 个点,其预测结果和解析解如下图所示。
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<figure markdown>
233-
![allen_cahn_piranet.jpg](https://paddle-org.bj.bcebos.com/paddlescience/docs/AllenCahn/allen_cahn_piranet_ac.png){ loading=lazy }
233+
![allen_cahn_piratenet.jpg](https://paddle-org.bj.bcebos.com/paddlescience/docs/AllenCahn/allen_cahn_piratenet_ac.png){ loading=lazy }
234234
<figcaption> 左侧为 PaddleScience 预测结果,中间为解析解结果,右侧为两者的差值</figcaption>
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</figure>
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examples/allen_cahn/allen_cahn_piranet.py renamed to examples/allen_cahn/allen_cahn_piratenet.py

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def train(cfg: DictConfig):
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# set model
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model = ppsci.arch.PiraNet(**cfg.MODEL)
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model = ppsci.arch.PirateNet(**cfg.MODEL)
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# set equation
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equation = {"AllenCahn": ppsci.equation.AllenCahn(0.01**2)}
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def evaluate(cfg: DictConfig):
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# set model
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model = ppsci.arch.PiraNet(**cfg.MODEL)
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model = ppsci.arch.PirateNet(**cfg.MODEL)
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data = sio.loadmat(cfg.DATA_PATH)
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u_ref = data["usol"].astype(dtype) # (nt, nx)
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def export(cfg: DictConfig):
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# set model
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model = ppsci.arch.PiraNet(**cfg.MODEL)
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model = ppsci.arch.PirateNet(**cfg.MODEL)
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# initialize solver
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solver = ppsci.solver.Solver(model, cfg=cfg)
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273273
@hydra.main(
274-
version_base=None, config_path="./conf", config_name="allen_cahn_piranet.yaml"
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version_base=None, config_path="./conf", config_name="allen_cahn_piratenet.yaml"
275275
)
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def main(cfg: DictConfig):
277277
if cfg.mode == "train":

examples/allen_cahn/conf/allen_cahn_piranet.yaml renamed to examples/allen_cahn/conf/allen_cahn_piratenet.yaml

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hydra:
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run:
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# dynamic output directory according to running time and override name
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dir: outputs_allen_cahn_piranet/${now:%Y-%m-%d}/${now:%H-%M-%S}/${hydra.job.override_dirname}
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dir: outputs_allen_cahn_piratenet/${now:%Y-%m-%d}/${now:%H-%M-%S}/${hydra.job.override_dirname}
1515
job:
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name: ${mode} # name of logfile
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chdir: false # keep current working directory unchanged
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# inference settings
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INFER:
82-
pretrained_model_path: https://paddle-org.bj.bcebos.com/paddlescience/models/AllenCahn/allen_cahn_piranet_pretrained.pdparams
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pretrained_model_path: https://paddle-org.bj.bcebos.com/paddlescience/models/AllenCahn/allen_cahn_piratenet_pretrained.pdparams
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export_path: ./inference/allen_cahn
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pdmodel_path: ${INFER.export_path}.pdmodel
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pdiparams_path: ${INFER.export_path}.pdiparams

ppsci/arch/__init__.py

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from ppsci.arch.amgnet import AMGNet # isort:skip
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from ppsci.arch.mlp import MLP # isort:skip
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from ppsci.arch.mlp import ModifiedMLP # isort:skip
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from ppsci.arch.mlp import PiraNet # isort:skip
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from ppsci.arch.mlp import PirateNet # isort:skip
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from ppsci.arch.deeponet import DeepONet # isort:skip
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from ppsci.arch.embedding_koopman import LorenzEmbedding # isort:skip
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from ppsci.arch.embedding_koopman import RosslerEmbedding # isort:skip
@@ -52,7 +52,7 @@
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"AMGNet",
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"MLP",
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"ModifiedMLP",
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"PiraNet",
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"PirateNet",
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"DeepONet",
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"DeepPhyLSTM",
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"LorenzEmbedding",

ppsci/arch/mlp.py

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return y
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class PiraNetBlock(nn.Layer):
470-
r"""Basic block of PiraNet.
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class PirateNetBlock(nn.Layer):
470+
r"""Basic block of PirateNet.
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472472
$$
473473
\begin{align*}
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548548
return out
549549

550550

551-
class PiraNet(base.Arch):
552-
r"""PiraNet.
551+
class PirateNet(base.Arch):
552+
r"""PirateNet.
553553
554554
[PIRATENETS: PHYSICS-INFORMED DEEP LEARNING WITHRESIDUAL ADAPTIVE NETWORKS](https://arxiv.org/pdf/2402.00326.pdf)
555555
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564564
\mathbf{g}^{(l)} &= \sigma\left(\mathbf{W}_2^{(l)} \mathbf{z}_1^{(l)}+\mathbf{b}_2^{(l)}\right) \\
565565
\mathbf{z}_2^{(l)} &= \mathbf{g}^{(l)} \odot \mathbf{U}+\left(1-\mathbf{g}^{(l)}\right) \odot \mathbf{V} \\
566566
\mathbf{h}^{(l)} &= \sigma\left(\mathbf{W}_3^{(l)} \mathbf{z}_2^{(l)}+\mathbf{b}_3^{(l)}\right) \\
567-
\mathbf{x}^{(l+1)} &= \text{PiraBlock}^{(l)}\left(\mathbf{x}^{(l)}\right), l=1...L-1\\
567+
\mathbf{x}^{(l+1)} &= \text{PirateBlock}^{(l)}\left(\mathbf{x}^{(l)}\right), l=1...L-1\\
568568
\mathbf{u}_\theta &= \mathbf{W}^{(L+1)} \mathbf{x}^{(L)}
569569
\end{align*}
570570
$$
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Args:
573573
input_keys (Tuple[str, ...]): Name of input keys, such as ("x", "y", "z").
574574
output_keys (Tuple[str, ...]): Name of output keys, such as ("u", "v", "w").
575-
num_blocks (int): Number of PiraBlocks.
575+
num_blocks (int): Number of PirateBlocks.
576576
hidden_size (Union[int, Tuple[int, ...]]): Number of hidden size.
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An integer for all layers, or list of integer specify each layer's size.
578578
activation (str, optional): Name of activation function. Defaults to "tanh".
@@ -590,7 +590,7 @@ class PiraNet(base.Arch):
590590
Examples:
591591
>>> import paddle
592592
>>> import ppsci
593-
>>> model = ppsci.arch.PiraNet(
593+
>>> model = ppsci.arch.PirateNet(
594594
... input_keys=("x", "y"),
595595
... output_keys=("u", "v"),
596596
... num_blocks=3,
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677677
for i, _size in enumerate(hidden_size):
678678
self.blocks.append(
679-
PiraNetBlock(
679+
PirateNetBlock(
680680
cur_size,
681681
activation=activation,
682682
random_weight=random_weight,

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