In this post, we will see how to resolve How to take random samples from a Phyloseq object Question: I have a Phyloseq object like the following: My goal is to take a random sample of size n from this ...
In this post, we will see how to resolve Python – Sampling imbalanced dataset Question: I have a dataset with 3 classes and below are the value_counts(). I want to sample this dataset with the distribution as below. Random sampling ...
In this post, we will see how to resolve Using a loop to create different samples from the same dataset Question: I am trying to create different samples with a different size from the same dataset, an have them saved ...
In this post, we will see how to resolve Is there a way to do a random sample of a matrix to get cell location in R? Question: (I’m a beginner in R so sorry if this makes no sense)If ...
In this post, we will see how to resolve How to get sample of data by having best possible equal number of rows from multiple columns? Question: Data: I want to take sample of this dataset i.e., 200 rows by ...
Question: I have a df with columns that represents a stratum (strat). I want to loop over those stratum and pull out rows to a new df, df_sample. I want to pull out all rows in a stratum if cases ...
Question: I have a DataFrame like this: And it has 11 classes (0 to 10) and has high class imbalance. Below is the output of train['label'].value_counts(): How do I under-sample this data in pandas so that each class will have ...
Question: I have a dataframe that contains multiple columns and would like to randomly select an equal number of rows based on the values of specific column. I thought of using a df.groupby[‘…’] but it did not work. Here is ...