ML-From-Scratch | Machine Learning From Scratch | Machine Learning library
kandi X-RAY | ML-From-Scratch Summary
kandi X-RAY | ML-From-Scratch Summary
Python implementations of some of the fundamental Machine Learning models and algorithms from scratch. The purpose of this project is not to produce as optimized and computationally efficient algorithms as possible but rather to present the inner workings of them in a transparent and accessible way.
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Top functions reviewed by kandi - BETA
- Train the discriminator
- Generate images for the MNIST dataset
- Set trainable value
- Train the loss function
- Calculate the cost for each sample
- Compute the clusters for the given medoids
- Calculates the cost of each sample
- Compute the euclidean distance between two points
- Backward of the layer
- Build the discriminator layer
- Predict cluster labels
- Train the autoencoder
- Find the most frequent items in the list
- K - fold cross validation sets
- Fit the network to the given data
- Fit the model to the given data
- Build the generator
- Compute the DecisionStump
- Fit the quadratic model
- Train the model
- Evolves the population
- Run the crossover algorithm
- Plots the class distribution in 2d
- Evolve the population
- Fit the model
- Compute the posterior distribution
ML-From-Scratch Key Features
ML-From-Scratch Examples and Code Snippets
import numpy as np
from sklearn.datasets import load_boston
# from sklearn.linear_model import LinearRegression
# from sklearn.model_selection import train_test_split
# from sklearn.metrics import mean_absolute_error
# from sklearn.preprocessing imp
Community Discussions
Trending Discussions on ML-From-Scratch
QUESTION
I'm doing a regression by LinearRegression
and get the mean squared error 0. I think there should be some deviation(at least small). Could you please explain this phenomenon?
ANSWER
Answered 2020-Sep-24 at 23:10While the comments are certainly correct that a model's score on its own training set will be inflated, it is unlikely to get a perfect fit with linear regression, especially with just one feature.
Your problem is that you've reshaped the data incorrectly: reshape(1, -1)
makes an array of shape (1, n)
, so your model thinks it has n
features and n
outputs with only a single sample, and so is a multiple linear regression with a perfect fit. Try instead with reshape(-1, 1)
for x
and no reshaping for y
.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install ML-From-Scratch
You can use ML-From-Scratch like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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