search for: ackley

Displaying 5 results from an estimated 5 matches for "ackley".

2003 Apr 26
6
DynExtenDB
I have been fooling around with DynExtenDB and run into two glitches. 1) The code is looking for (chan->dnis) and in my case I find (null). I forced (chan-dnis) to be the same as (chan->exten). So far so good. Now I can connect and talk. This lead me to the second glitch. 2) As soon as the call ends by hanging up, the code issues a (ast_spawn_extension). This causes asterisk to drop
2008 Jul 03
1
Ternaryplot function
I am new to R, so this is most likely a dumb question. I just installed the vcb package, but when I try to use a function from it (ternaryplot) I get an error message saying 'could not find function: ternaryplot'. I'm pretty confident that my script is correct, so I'm assuming that I did not properly install the package. Is there another step past downloading, and selecting
2008 Jul 11
1
Plot multiple datasets on a VCD ternary graph
I need to plot multiple sets of data, on one Ternary plot (from the VCD package). Since they all need to be formatted differently, I can't just coerce them into one matrix, I need three separate calls. Is there a way to do this? Thanks -- View this message in context: http://www.nabble.com/Plot-multiple-datasets-on-a-VCD-ternary-graph-tp18412092p18412092.html Sent from the R help mailing
2011 Dec 30
1
Calculate survival function for AFT model
I have fit an accelerated failure time model using coxph, and have what seems to be a simple question that I can't figure out. Given a vector of predictor values X, the survival time S[t|X] is the probability the entity will survive longer than some time t. Now, how do I calculate this for a specific value of t? -- View this message in context:
2012 Jul 23
1
mboost vs gbm
I'm attempting to fit boosted regression trees to a censored response using IPCW weighting. I've implemented this through two libraries, mboost and gbm, which I believe should yield models that would perform comparably. This, however, is not the case - mboost performs much better. This seems odd. This issue is meaningful since the output of this regression needs to be implemented in a