> Variable names cannot have spaces
Please soften your words... variables can have all sorts of characters
including spaces in them, but it can be inconvenient to quote them all with
back-tick quotes like `merged 1` so where possible most people avoid variable
names with weird characters.
Peop
Some issues:
1) Variable names cannot have spaces. "merged 1" is not valid but "merged_1" is
a valid alternative.
2) You need to tell R what to merge by. It looks like you may be using data
tables rather than a data frame.
merged <- dataset2[dataset1, on = "id", nomatch = NA]
3) Alternatively: j
Hi guys,
For my MSc. thesis i am using R studio. The goal is for me to merge a couple
(6) of relatively large datasets (min of 200.000 and max of 2mil rows). I have
now been able to do so, however I think something might be going wrong in my
codes.
For reference, i have a dataset 1 (200.000), da
Hi,
Before calling the second ga, I am just altering the columns of dat except
the first column
Dat = Dat[, c(1, 1 + sample(1:30, 30, replace = F))]
With that, I expect the positions of the elements of x will be
changed, but objective function should return the same value, same for
ga. Below is
Dear Daniel
As far as I can see you have re-generated the data before calling ga()
so the data is not just a permutation of the first set.
Michael
On 07/05/2025 15:36, Daniel Lobo wrote:
I am using *Genetic Algorithm* to maximize some function which use data.
I use GA package in R for this
I am using *Genetic Algorithm* to maximize some function which use data.
I use GA package in R for this (
https://cran.r-project.org/web/packages/GA/index.html)
Below is my code
library(GA)
set.seed(1)
Dat = data.frame(rnorm(1000), matrix(rnorm(1000 * 30), nc = 30))
Fitness_Fn = function(x) {
6 matches
Mail list logo
