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Sotos
Senior Data Scientist
  • Member for 9 years
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About

You can now buy me a coffee If my answer helped you :P

https://www.buymeacoffee.com/sotos

By day: A data scientist building machine learning systems. Favorite tool: R. Also know: Spark, scala, python. . Research interests include SVM, Bayesian Inference (naive-Bayes), ANN, time-series analysis, auto-regression models, etc.

Love: Heavy Metal music, water-sports, football, dogs, cooking, playing the guitar.

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answer
32
Extract text after a symbol in R
May 5, 2016
answer
26
group by in dplyr and calculating percentages
Jul 27, 2017
question
24
Convert to NA after a specific value by row
Sep 20, 2021
answer
14
Replace the last occurence of a string (and only it) using regular expression
Sep 8, 2017
answer
13
Count the number of all words in a string
Jun 29, 2018
answer
12
Unnest or unchop dataframe containing lists of different lengths
Dec 5, 2019
answer
12
Using group_by with mutate_if by column name
Oct 6, 2017
answer
12
R: Calculate standard deviation in cols in a data.frame despite of NA-Values
Jun 14, 2016
answer
11
Match substring of two vectors and create a new vector combining them
Nov 22, 2017
answer
11
Create group names for consecutive values
Jun 14, 2016