Publications by Haichen
Capstone Data Summary
Data Loading The goal of this project is just to display that you’ve gotten used to working with the data and that you are on track to create your prediction algorithm. Please submit a report on R Pubs (http://rpubs.com/) that explains your exploratory analysis and your goals for the eventual app and algorithm. This document should be concise a...
3153 sym R (6900 sym/38 pcs) 6 img
Case Study
Background O’Conner Motors need a forecast of how much several luxury models will be selling for in the coming months. Data is provided with 3 years of recent sales prices and some automotive metrics. This project includes 2 model algorithms: * Generalized Linear Models (GLM) with Regularization * Stochastic gradient boosting trees (GBM) Get...
6451 sym R (23399 sym/69 pcs) 10 img
UnderReservedModel
Background Loss reserve risk can account for the greatest drain on corporate capital. Furthermore, the factors that drive loss reserve risk also contribute to underwriting risk for long-tail business as well as correlation with the underwriting cycle. The data is originally from Sedgwick daily E02 and mbr files, we created month end and year end ...
9191 sym R (20847 sym/58 pcs) 11 img
CT NLP analysis
Overview Cumulative trauma (CT) injuries are those that happen gradually at work, over a period of time, or during a course of repetitive work-related activities. According to the WCIRB report, CT claims in some regions (LA Basin etc.) in California has been steadily increasing since the study began in 2005. CT claims have consistently had a high...
4790 sym R (17044 sym/33 pcs) 11 img
Predict Next Word
01 06 2021 Introduction This Presentation provides a brief introduction of the Predict Next Word application. The application is the final project of the Data Science Specialization. Algorithm The raw data have been preprocessed before prediction, bigram and trigram corpus text have been created and analyzed. The prediction model conduct the pre...
933 sym
Grizzly moving
Get Data suppressMessages(library(ggplot2)) suppressMessages(library(caret)) suppressMessages(library(gbm)) suppressMessages(library(dplyr)) suppressMessages(library(glmnet)) suppressMessages(library(psych)) suppressMessages(library(corrr)) suppressMessages(library(readr)) suppressMessages(library(tidyr)) suppressMessages(library(stringr...
2283 sym R (14676 sym/36 pcs) 21 img