Joseph Wood

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Joseph Wood has asked 6 questions and find answers to 73 problems.

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Joseph Wood questions

Performance Considerations when using VBA Filter Function
Most efficient way to determine if element exists in a vector
R Algorithm for generating all possible factorizations of a number
Arithmetic in R faster on numerics as opposed to integers. What's going on?
Why does R's duplicated perform better on sorted data?

Joseph Wood answers

R - generate unique sequences of list with reoccuring items
Impute factor values using dates
Constrained matrices
No general solution to k-combination of multiset?
Split a set into n unequal subsets with the key deciding factor being that the elements in the subset aggregate and equal a predetermined amount?
Equalizing the lengths of all the lists within a list?
Faster version of combn
Why is the Rcpp implementation in my example much slower than the R function?
Unordered combinations of all lengths
R combinations, looking for faster and more efficient way(package,code,parallel cpu) than basic R