Analysis of Text: Tolstoy’s War and Peace
On this post, we will look at an example of analysis of text data that are Tolstoy’s War and Peace books. You can download a plain text file from http://www.gutenberg.org/ebooks/2600. … Read More
Category: Machine Learning
Random Forests
Random forests are an ensemble method (generally, bagging) constructing multiple decision trees on random samples with replacement of the training set. It is a supervised learning algorithm and can be … Read More
A General Approach to Preprocessing Text Data
You can find the whole process from preprocessing to visualization in another post Analysis of Text: Tolstoy’s War and Peace if you are interested in looking at the whole source … Read More
Simple Linear Regression
The difference between simple linear regression and multiple linear regression is that simple linear regression has only one independent variable whereas multiple linear regression has more than one independent variable. … Read More
Softmax Regression
In a previous post, we have looked at Logistic Regression for binary classification. In this post, we will see how the logistic regression can be generalized for multiple classes. This … Read More
Logistic Regression
You might guess that this algorithm is only for regression problems because of its name. However, Logistic Regression also can be used for classification problems. Logistic Regression estimates the probability … Read More
L1 and L2 as Regularization for a Linear Model
Regularization is a good way to reduce overfitting. For a linear model, the model can be regularized by penalizing the weights of the model. Simply speaking, the regularization prevents the … Read More
L1 and L2 as Cost Function
In machine learning, L1 and L2 techniques are widely used as cost function and regularization. It is worth to know key differences between L1 and L2 for a better model. … Read More
6 Approaches to Deal with Imbalanced Classes
Have you seen this problem in your dataset? You might see the imbalanced classes problem when you deal with classification problems. This is very common. Imagine that you create a … Read More