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1c8f8fdfe7
tra-analysis/data analysis/cudaRegressTesting.ipynb
jlevine18 1c8f8fdfe7
added cudaRegress testing notebook
2019-09-21 13:35:51 -05:00

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{
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": [
"import torch"
]
},
{
"cell_type": "code",
"execution_count": 55,
"metadata": {},
"outputs": [],
"source": [
"def factorial(n):\n",
" if n==0:\n",
" return 1\n",
" else:\n",
" return n*factorial(n-1)\n",
"\n",
"def take_all_pwrs(vec,pwr):\n",
" #todo: vectorize (kinda)\n",
" combins=torch.combinations(vec, r=pwr, with_replacement=True)\n",
" out=torch.ones(combins.size()[0])\n",
" for i in torch.t(combins):\n",
" out *= i\n",
" return out\n",
"\n",
"class LinearRegKernel():\n",
" parameters= []\n",
" weights=None\n",
" bias=None\n",
" def __init__(self, num_vars):\n",
" self.weights=torch.rand(num_vars, requires_grad=True)\n",
" self.bias=torch.rand(1, requires_grad=True)\n",
" self.parameters=[self.weights,self.bias]\n",
" def forward(self,mtx):\n",
" long_bias=self.bias.repeat([1,mtx.size()[1]])\n",
" return torch.matmul(self.weights,mtx)+long_bias\n",
" \n",
"class SigmoidalRegKernel():\n",
" parameters= []\n",
" weights=None\n",
" bias=None\n",
" sigmoid=torch.nn.Sigmoid()\n",
" def __init__(self, num_vars):\n",
" self.weights=torch.rand(num_vars)\n",
" self.bias=torch.rand(1)\n",
" self.parameters=[self.weights,self.bias]\n",
" def forward(self,mtx):\n",
" long_bias=self.bias.repeat([1,mtx.size()[1]])\n",
" return self.sigmoid(torch.matmul(self.weights,mtx)+long_bias)\n",
"\n",
"class LogRegKernel():\n",
" parameters= []\n",
" weights=None\n",
" bias=None\n",
" def __init__(self, num_vars):\n",
" self.weights=torch.rand(num_vars)\n",
" self.bias=torch.rand(1)\n",
" self.parameters=[self.weights,self.bias]\n",
" def forward(self,mtx):\n",
" long_bias=self.bias.repeat([1,mtx.size()[1]])\n",
" return torch.log(torch.matmul(self.weights,mtx)+long_bias)\n",
"\n",
"class ExpRegKernel():\n",
" parameters= []\n",
" weights=None\n",
" bias=None\n",
" def __init__(self, num_vars):\n",
" self.weights=torch.rand(num_vars)\n",
" self.bias=torch.rand(1)\n",
" self.parameters=[self.weights,self.bias]\n",
" def forward(self,mtx):\n",
" long_bias=self.bias.repeat([1,mtx.size()[1]])\n",
" return torch.exp(torch.matmul(self.weights,mtx)+long_bias)\n",
"\n",
"class PolyRegKernel():\n",
" parameters= []\n",
" weights=None\n",
" bias=None\n",
" power=None\n",
" def __init__(self, num_vars, power):\n",
" self.power=power\n",
" num_terms=int(factorial(num_vars+power-1) / factorial(power) / factorial(num_vars-1))\n",
" self.weights=torch.rand(num_terms)\n",
" self.bias=torch.rand(1)\n",
" self.parameters=[self.weights,self.bias]\n",
" def forward(self,mtx):\n",
" #TODO: Vectorize the last part\n",
" cols=[]\n",
" for i in torch.t(mtx):\n",
" cols.append(take_all_pwrs(i,self.power))\n",
" new_mtx=torch.t(torch.stack(cols))\n",
" long_bias=self.bias.repeat([1,mtx.size()[1]])\n",
" return torch.matmul(self.weights,new_mtx)+long_bias\n",
"\n",
"def SGDTrain(kernel, data, ground, loss=torch.nn.MSELoss(), iterations=1000, learning_rate=.1, return_losses=False):\n",
" optim=torch.optim.SGD(kernel.parameters, lr=learning_rate)\n",
" if (return_losses):\n",
" losses=[]\n",
" for i in range(iterations):\n",
" with torch.set_grad_enabled(True):\n",
" pred=kernel.forward(data)\n",
" ls=loss(pred,ground)\n",
" losses.append(ls.item())\n",
" ls.backward()\n",
" optim.step()\n",
" return [kernel,losses]\n",
" else:\n",
" for i in range(iterations):\n",
" with torch.set_grad_enabled(True):\n",
" pred=kernel.forward(data)\n",
" ls=loss(pred,ground)\n",
" ls.backward()\n",
" optim.step() \n",
" return kernel\n",
"\n",
"def CustomTrain(kernel, optim, data, ground, loss=torch.nn.MSELoss(), iterations=1000, return_losses=False):\n",
" if (return_losses):\n",
" losses=[]\n",
" for i in range(iterations):\n",
" with torch.set_grad_enabled(True):\n",
" pred=kernel.forward(data)\n",
" ls=loss(pred,ground)\n",
" losses.append(ls.item())\n",
" ls.backward()\n",
" optim.step()\n",
" return [kernel,losses]\n",
" else:\n",
" for i in range(iterations):\n",
" with torch.set_grad_enabled(True):\n",
" pred=kernel.forward(data)\n",
" ls=loss(pred,ground)\n",
" ls.backward()\n",
" optim.step() \n",
" return kernel"
]
},
{
"cell_type": "code",
"execution_count": 59,
"metadata": {},
"outputs": [
{
"data": {
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" 25.902109146118164,\n",
" 39.29465866088867,\n",
" 47.14982223510742,\n",
" 46.622066497802734,\n",
" 37.90248489379883,\n",
" 24.149599075317383,\n",
" ...]"
]
},
"execution_count": 59,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"model=SGDTrain(LinearRegKernel(3),torch.tensor([[1,2],[3,4],[5,6]]).to(torch.float),torch.tensor([[1,2]]).to(torch.float),iterations=10000, learning_rate=.001, return_losses=True)\n",
"model[1]"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.7.3"
}
},
"nbformat": 4,
"nbformat_minor": 4
}
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