Publications by Chang-Chun Chen
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class: center, middle, inverse, title-slide # Tutorial ## Smoothing mixture model (SMM) ### Jenny Hsu & Chang-Chun Chen ### 2020-12-14 --- ### Intro > {lcmm} Latent class mixed-effect models > {gamm4} Generalized additive mixed models --- ### Time intensity curves .pull-left[ ```r dta1 <- read.table("time_intensity.txt"...
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20201130 In-class exercise
1 Inclass 1 1.1 Info Problem: Reproduce the results of analysis reported in the reading time and character size example. Data: MNREAD Acuity Charts (Optelec, US Inc.) were used to measure reading speed as a function of print size. MNREAD data were collected from 42 adult observers with normal vision. Reading speed was measured in log word per m...
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20201123 homework
1 Homework 1 1.1 Info Problem: Replicate the results of analysis reported in the adolescent smoking example of repeated binary outcomes. Data: A sample of 1,760 Australian adolescents whose smoking patterns were recorded every 6 months for 3 years. Parental smoking and gender variables were also recorded. The goal was to examine if the probabil...
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20201123 In-class exercise
1 Inclass 1 1.1 Info Problem: Fit the Rasch model to starter data via the generalized linear mixed model framework. Data: The data are the responses of a sample of 150 individuals to 9 multiple-choice items from a General Certificate of Education O-level mathematics paper containing 60 items in all. The responses are coded 1 for correct answer ...
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20201109 homework
1 Homework 1 1.1 Info Problem: Analyze the child obesity data with the model specified in the example and interpret the results. Data: The data are from the Muscatine Coronary Risk Factor (MCRF) study, a longitudinal survey of school-age children in Muscatine, Iowa. The MCRF study had the goal of examining the development and persistence of ris...
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20201109 In-class exercise
1 Inclass 1 1.1 Info Problem: Fit a regression model for parents and another for teachers, separately, and compare the results with that from the multiple sources approach for the Connecticut child surveys example. Data: The data are obtained from two surveys of children’s mental health. The data set consists of 1,428 children who had both pa...
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20201102 homework
1 Homework 1 1.1 Info Problem: Use an appropriate model to examine how the response depends on respondent’s gender (0 = male, 1 = female), age, and academic status (1 = academic or 0 = otherwise). Data: In a survey people were asked, “Is addiction a disease or are addicts weak-willed?” The response was in three categories, 0 = “addicts ...
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20201102 In-class exercise
1 Inclass 1 1.1 Info Problem: Replicate the analysis reported in the bullying example. Data: Two measures of bullying behavior have been constructed. The first uses self-report on a 9-item Illinois Bully Scale. The second is peer nomination in which children list any person they perceive as a bully. The total number of nominations a person rece...
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20201130 Homework
1 Homework 1 1.1 Info Problem: Perform an appropriate analysis of the free recall example. Data: In a learning task known as a free-recall list, each subject was presented with a list of words, one at a time, for a few second each. After all the words had been presented, the subject was asked to recall as many of the words as possible. On each ...
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20211108 In-class
1 In-class 1 The ChickWeight.R script illustrates how to implement ‘small multiples’ in base graphics given the 4 different diets of the ChickWeight{datasets} example. Task: Adapt the script to produce a plot of 5 panels in which each panel shows a histogram of IQ for each of 5 classes with over 30 pupils in the nlschools{MASS} dataset. 1.1...
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