Inès François

12 Questions 77 Answers 0 Followers

Questions related from Inès François

How to merge datasets in R by row including only matching records?

Good morning, I have two datasets with the exact same columns. I would like to select rows that have a matching ID between the two datasets (Please, see tables below).I tried to merge datasets...

12 January 2024 1,647 3 View

How do you handle with missing data in time series?

Good morning, for my research project, I am using school meal data selection. I would like to investigate the children's food selection patterns using multiple time series using the K-means...

03 October 2023 2,866 6 View

With a big dataset including only categorical variable, what is the acceptable rate of missing values?

Good afternoon, During the data quality stage, if your dataset includes only categorical variables and as a result, you cannot use imputation methods, to which degree do you judge that the quality...

01 June 2023 3,323 1 View

To investigate and to predict a binary variable, do you use Logistic Regressions or Gradient Boosting Models?

Good afternoon, I would like to share a quick survey. For inference and predictive models with a binary variable, do you prefer to use Binary Logistic Regressions Models or Gradient Boosting...

20 April 2023 3,753 3 View

Do you know some reference about the application of Gradient Boosting Model application in food consumption research?

Good afternoon, I am searching for some references of Classification Gradient Boosting Decision Tree Models (CGDTM) applied to the investigation of factors affecting food choices and the...

12 April 2023 3,822 0 View

For a K-mean cluster analysis, when variables are percentages have we to use n-1 variables?

Good morning, I would like to share this question. I am conducting a K-mean clustering analysis. My aim is to investigate if I can observe some patterns of food consumption. For my dataset, each...

07 December 2022 4,388 1 View

Threshold silhouette score for cluster analysis

Good afternoon, The silhouette score is between 0 and 1 and the closer to 1 is, the better the quality of the cluster is. From which threshold, can we say that the quality of cluster is...

01 January 1970 9,473 3 View

How do you present the data cleaning stage in academic report?

Good afternoon, I am thinking about how I can present the data cleaning stage of my research project. I am hesitating between generating a summary table (could be complex because it includes 16...

01 January 1970 4,500 3 View

Report variables and their levels in academic writing

Good morning Are there writing conventions in academic writing to report a variable and levels of these variables? Thanks

01 January 1970 4,021 1 View

For which duration do you consider that your data are collected in the long term?

Good afternoon, in your research, for which duration do you consider that your data are collected in the long term? I am currently working on the investigation of children's school meal selections...

01 January 1970 1,070 2 View

Outline the research paradigm in the Method chapter PhD thesis

Good afternoon, I am preparing the methods chapter for my thesis. I would like to know if when you outline the research paradigm, you include only one paragraph describing the epistemology...

01 January 1970 838 8 View

Journal publication advices

Hi everyone, In this beginning of year, i shaŕe you this question to help junior scientists. What are your advice for PhD student/early research carreer to publish their research paper in Quarter...

01 January 1970 2,954 2 View