Statistics
10 Questions
0 Answers
RANK
23,609
of 300,779
REPUTATION
1
CONTRIBUTIONS
10 Questions
0 Answers
ANSWER ACCEPTANCE
70.0%
VOTES RECEIVED
1
RANK
of 21,084
REPUTATION
N/A
AVERAGE RATING
0.00
CONTRIBUTIONS
0 Files
DOWNLOADS
0
ALL TIME DOWNLOADS
0
RANK
of 170,997
CONTRIBUTIONS
0 Problems
0 Solutions
SCORE
0
NUMBER OF BADGES
0
CONTRIBUTIONS
0 Posts
CONTRIBUTIONS
0 Public Channels
AVERAGE RATING
CONTRIBUTIONS
0 Discussions
AVERAGE NO. OF LIKES
Feeds
Question
Computing mean by group (need help with speed!)
Hi everyone, I need to demean the columns of matrix Xw (200000 x 24) by group id. To do this, I need to compute means of the ...
10 years ago | 6 answers | 1
6
answersQuestion
How does particle swarm deal with objective function evaluations to NaN?
Hi everyone, Simple question, though I haven't been able to find a definite answer: How does the Particle Swarm optimization ro...
10 years ago | 1 answer | 0
1
answerQuestion
Help speeding up matrix algebra in loop...
Hi everyone, I'm simply looking for some suggestions for speeding up the following block of code: bhat = (X'*X)\(X'*y);...
10 years ago | 1 answer | 0
1
answerQuestion
warning when solving nonlinear equations with 'solve'
Hi everyone, Quick question: I'm trying to solve a nonlinear system of 30 equations in 30 unknowns using the solve function, an...
11 years ago | 1 answer | 0
1
answerQuestion
Creating symbolic function with certain properties but unspecified functional form?
I've written code to symbolically log-linearize a non-linear model, and would like to specify several symbolic functions general...
12 years ago | 1 answer | 0
1
answerQuestion
New user, help please!!!
I keep getting this error using the mupad solver!! equations:={eqn1,eqn2,...,eqn51} unknowns:={var1,var2,...,var51} sol...
12 years ago | 1 answer | 0
1
answerQuestion
"Illegal variable context [DOM_VAR]" using mupad solver
I'm trying to symbolically solve a system of 51 equations in 51 unknowns. My code looks as follows: equations:={eqn1,eqn2,......
12 years ago | 0 answers | 0
0
answersQuestion
simple fsolve problem...
I'm new to MATLAB and I'm trying to solve a nonlinear system of two (large) equations in two unknowns, but I keep getting the "T...
13 years ago | 1 answer | 0
1
answerQuestion
One-dimensional array of variable length
I need to create a one-dimensional string array of _variable length_ that I can add elements to as needed. I don't know how lon...
14 years ago | 3 answers | 0
3
answersQuestion
Converting string matrix from Excel to Matlab
I have an excel document containing a matrix of strings (that is, each cell contains a word of varying length). If possible, I ...
14 years ago | 2 answers | 0
