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from enum import StrEnum | |
from typing import Any, Optional | |
from typing_extensions import Self | |
from pydantic import Field, model_validator | |
from pydantic_settings import BaseSettings, SettingsConfigDict | |
class BaseEnvConfig(BaseSettings): | |
ciao: Optional[str] = Field(default=None, validation_alias="CIAO") |
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from sktime.forecasting.model_selection import temporal_train_test_split, SingleWindowSplitter, ForecastingRandomizedSearchCV | |
from sktime.forecasting.base import ForecastingHorizon | |
from sktime.forecasting.compose import make_reduction, TransformedTargetForecaster | |
from sktime.utils.plotting import plot_series | |
from sktime.performance_metrics.forecasting import mean_absolute_percentage_error | |
from sktime.transformations.series.detrend import Deseasonalizer, Detrender | |
from sktime.forecasting.trend import PolynomialTrendForecaster | |
from xgboost import XGBRegressor |
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type Message struct { | |
Sender string `json:"sender"` | |
Receiver string `json:"receiver"` | |
Body string `json:"body"` | |
Time string `json:"time"` | |
} | |
type User struct { | |
isOnline bool | |
msgCh chan Message |
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import numpy as np | |
import torch | |
from torch import nn | |
from torch import Tensor | |
from torch.func import functional_call | |
import torchopt | |
import matplotlib.pyplot as plt | |
class SimpleNN(nn.Module): |
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class SimpleNN(nn.Module): | |
def __init__( | |
self, | |
num_hidden: int = 1, | |
dim_hidden: int = 1, | |
act: nn.Module = nn.Tanh(), | |
) -> None: | |
"""Basic neural network with linear layers and non-linear activation function | |
Args: |
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# choose the configuration | |
batch_size = 30 # number of colocation points sampled in the domain | |
num_iter = 100 # maximum number of iterations | |
learning_rate = 1e-1 # learning rate | |
domain = (-5.0, 5.0) # logistic equation domain | |
# choose optimizer with functional API using functorch | |
optimizer = torchopt.FuncOptimizer(torchopt.adam(lr=learning_rate)) | |
# train the model |
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from functorch import make_functional, grad, vmap | |
# create the PINN model and make it functional using functorch utilities | |
model = NNApproximator() | |
fmodel, params = make_functional(model) | |
def f(x: torch.Tensor, params: torch.Tensor) -> torch.Tensor: | |
# only a single element is supported thus unsqueeze must be applied | |
# for batching multiple inputs, `vmap` must be used as below | |
x_ = x.unsqueeze(0) |
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import torch | |
import torch.nn as nn | |
R = 1.0 # rate of maximum population growth parameterizing the equation | |
X_BOUNDARY = 0.0 # boundary condition coordinate | |
F_BOUNDARY = 0.5 # boundary condition value | |
def loss_fn(params: torch.Tensor, x: torch.Tensor) -> torch.Tensor: |
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#!/bin/bash | |
# select a list of commits starting from head and put the in a file | |
# this is useful when selecting a set of commits to cherry-pick | |
git log --oneline | head -25 | tac | awk '{print $1}' | sed ':label1 ; N ; $! b label1 ; s/\n/\ /g' > commits.txt |
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# create a 5-layers PINN with 5 neurons per layer | |
nn_approximator = PINN(5, 5) | |
# hyperparameters and optimizer | |
max_epochs = 10_000 | |
learning_rate = 0.01 | |
optimizer = torch.optim.Adam(nn_approximator.parameters(), lr=learning_rate) | |
# optimization loop | |
for epoch in range(max_epochs): |
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