January 2020

Count data Models

January 5, 2020 | Modeling with R

Introduction: Data preparation Data partition Poisson model Quasi poisson model Negative binomial model Hurdle model hurdle model with poisson distribution. hurdle model with negative binomial distribution. Zero inflated model Zero inflated model with poisson distribution Zero inflated model with negative binomial distribution Conclusion: Furhter reading: Introduction: When we deal with ...
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Daily Volumes, Holidays and BLS Reports

January 5, 2020 | R Views

Welcome to another installment of Reproducible Finance with R - the blog series that never seems to stop reproducing itself. Today we will explore the new almanac package for working with dates, which sprang forth courtesy of the mad genius behind riingo and furrr. We will be examining rolling returns ... [Read more...]

Complex coloring and contour levels

January 5, 2020 | Paolo Pellizzari

I was recently fascinated by the illustration taken from the leaflet https://www.maa.org/sites/default/files/pdf/Mathhorizons/pdfs/ColoringPage_MH_Nov17.pdfI knew that complex functions could be colored in mesmerizing ways but the little book by Julie Barnes, William Kreahling, and Beth Schaubroeck, “Coloring book of ...
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Complex coloring and contour levels

January 5, 2020 | Paolo Pellizzari

I was recently fascinated by the illustration taken from the leaflet https://www.maa.org/sites/default/files/pdf/Mathhorizons/pdfs/ColoringPage_MH_Nov17.pdfI knew that complex functions could be colored in mesmerizing ways but the little book by Julie Barnes, William Kreahling, and Beth Schaubroeck, “Coloring book of ...
[Read more...]

NIMBLE short course at March ENAR meeting in Nashville

January 4, 2020 | Chris Paciorek

We’ll be holding a half-day short course on NIMBLE on March 22 at the ENAR meeting in Nashville, Tennessee. The annual ENAR meeting is a major biostatistics conference, sponsored by the eastern North American region of the International Biometric Society. The short course will focus on usage of NIMBLE in ...
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Xgboost model

January 4, 2020 | Modeling with R

Introduction Data preparation Data visualization Data partition Model training Fine tune the hyperparameters Conclusion: Introduction Decision tree1 is a model that recursively splits the input space into regions and defines local model for each resulted region. However, fitting decision tree model to complex data would not yield to accurate prediction ...
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Twitter in collage: a year in the life of a freshman Congresswoman

January 4, 2020 | Jason Timm

Introduction A super simple post that summarizes R-based methods for visual summary & collage-building using image attachments on Twitter. In the process, a bit of a photo homage to Congresswoman Xochitl Torres Small in her first year representing New Mexico’s 2nd district.
if (!require("pacman")) install.packages("pacman")
pacman::p_load(tidyverse, rtweet, tigris) 
options(tigris_use_cache = TRUE, tigris_class = "sf")
New Mexico’s 2nd District The 2nd ...
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von Bertalanffy Growth Plots II

January 2, 2020 | fishR Blog

Introduction library(FSAdata) # for data library(FSA) # for vbFuns(), vbStarts(), confint.bootCase() library(car) # for Boot() library(dplyr) # for filter(), mutate() library(ggplot2)In a previous post I demonstrated how to make a plot that illustrated the fit of a von Bertalanffy growth function (VBGF) to data. In this post, ... [Read more...]
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