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Jason Mathews

Rating
1496.77 (4,010,101st) 		Reputation
451 (296,882nd)
Page: 1
Title Δ
Is there a way to append values of columns from 2 different data fr... -3.19
How to summarize data based on value of adjacent cell in a dataframe -3.87
How can I create a rolling mean for each user based on previous 7 d... -0.93
Convert time shown as hours and minutes in three to four digits wit... -1.43
Create a combination of unique column names from two dataset withou... -2.91
find the minimum value that is not zero per each group using aggreg... -4.09
How to merge two data frames with only some matching column names a... 0.00
Problem with expand.grid with uneven vector lengths -1.00
Dataframe Normalization +4.20
R - How to predict values from an artificial data 0.00
Separating mixed values and generating new columns in tidyverse +3.63
How to replace values of several columns based on/ another column i... +3.69
I can't format the desired output correctly +4.02
Summarize the values of a column based on the values of more than t... -4.03
Applying a function to a single R data.frame column: lapply and app... -3.21
Add a new column to a dataframe with the percentage of every value... +4.01
Need help removing time pattern from date in R +2.56
How to filter two separate csv files and return an output? +3.98
how to split a binary column into two columns -3.90
Is it possible to deploy a pre-trained machine learning model in sh... 0.00
Adress certain numeric-variables depending on number after last bac... -4.11
Why I keep getting invalid R-squared 0.00
Add a different value (by groups) to another value in dataframe in R +3.99
Check if there are prior entries of a Customer_Id in a table and re... 0.00
How to assign specific values to a factorial dataframe? 0.00
save randomForest prediction as vector 0.00
using separate to divide column containing date format -0.56
How to take the average mean of each year? -0.08