ELVIS Blog

Thinking will not overcome fear but action will.

Challenge: Factors that may influence the fertility desire in China I downloaded the CGSS data version 2015 to take a detailed look into contributors for Chinese birth preference, make some prim...

Posted by ELVIS Blog on March 28, 2022

Inverse of Term Spreads

Macroeconometrics

Dozens of economic research presents the negative correlation between economic cycle and term spreads. Why Term spreads matter? Term spreads is capable of predicting changes in the real economy...

Posted by ELVIS on March 28, 2022

PROPENSITY SCORE

Microeconometrics

Propensity score was first propsed by Rosenbaum and Rubin(1983) Propensity score The concept of Propensity score system was first proposed by Rosenbaum and Rubin. They define the propensity sco...

Posted by ELVIS on June 9, 2019

HW6

Microeconometrics

Back Propagation The basic idea of backpropagation is to adjust the network parameters by calculating the error between the output layer and the expected value, so that the error becomes smaller...

Posted by ELVIS on May 19, 2019

DecisionTree practice

Microeconometrics

Decision Tree makes the choice of the best attribute within the current attribute sets directly. Here I will present detailedly my python code of the Decision tree algorithm. INformation entropy...

Posted by ELVIS on May 4, 2019

Some details about the K-nearest neighbors( KNN )

Microeconometrics

Some details about the K-nearest neighbors( KNN ) KNN was proposed by Hart and Cover, whose original purpose is accomplishing the text classsification work. [1] The basic principle behind this ...

Posted by ELVIS on April 13, 2019

TOOLS FOR MULTICOLLINEARITY--VIF

Microeconometrics

the Variance Inflation Factor( VIF ). What’s the mutlicollinearity? The multicollinearity arises when there is any departure from orthogonality in the set of regressors and get worse as the cor...

Posted by ELVIS on March 30, 2019

KL DIVERGENCE EXPALNATIONS

Microeconometrics

Hey 这是我的第一篇博客。 % Table created by stargazer v.5.2.2 by Marek Hlavac, Harvard University. E-mail: hlavac at fas.harvard.edu % Date and time: 周日, 6月 23, 2019 - 20:00:23 \begin{table}[!htbp] \cen...

Posted by ELVIS on March 29, 2019

KL DIVERGENCE EXPALNATIONS

Microeconometrics

Hey 这是我的第一篇博客。 HW1 Youwen Zhang In this file I will be glad to talk about how does the KL Divergence functions and why its not a proper distance measure. Several detailed mathematical fun...

Posted by ELVIS on March 29, 2019

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