## Backpropagation Algorithm

In the gradient decent learning process, we adjust the weights and biases to decrease the cost function. Backpropagation algorithm is used to find out the gradient of the cost function.

## Notes on Regression Analysis

1. Regression Analysis Regression analysis is a statistical process for estimating the relationships between a dependent variable() and one or more independent variables(). That is, estimating the parameters (also called weights) in (1)   based on some training examples . Regression analysis is widely used for prediction and forecasting, where its use has substantial overlap […]

## Figure and Animation Visualization in Python – The Using of Matplotlib and Seaborn

First of all, every language or tool can produce information accurate and nice-looking figure. They’re just tools, we should have a definite idea what we want to present and the way to achieve it. Most of the scientific figures are extremely boring. If  we can make them appearing before they bring the audiences yawns, why […]

## Monte Carlo Simulation-Random Walk

I’m very curious about why we should use random number in Monte Carlo Method, why not a regular distribution. If we want to calculate , it’s obvious that a uniform grid will produce the same result. I’d like to find out the motivation from random number and find out its powerfulness.