search for: decison

Dear colleagues in R, I am using rpart to make treedecision, but what treedecision rpart use ? j48, id3, c4.5 ? Tanks Rafael Marconi Ramos [[alternative HTML version deleted]]

...  airct <- ctree(Ozone ~ ., data = airq,                    controls = ctree_control(maxsurrogate = 3))     plot(airct)   My problem is, I've got a ctree that has 14 terminal nodes, and as a result of the default graphical paramters of plot(ctree), all of the text is completely undreadable (decison node text is too large and as a result, these nodes overlap one another, terminal node barplot text overlaps hideously).  What I would like to do is learn how to customize the elements of these plots.  For the text, I have tried par(cex=.4, cex.main=.4, cex.axis=.2, cex.lab=.2)... to no avail.  As...

...exclude=2 argument, and the useNA value is our default. The above makes this harder to do without rewriting the command wholesale, which is ok (we've done it before at various times in R and Splus) but we would avoid it if possible. Please no wars about whether this is the "right" decison or not, we've done it for 10+ years and quite firmly believe the extra robustness gained by having NA appear is worth the maintainance bother, correctness being paramount in medical research. We're not trying to convert anyone else, just get feedback on the best way to approach this. T...

Hi, there: I am wondering if there is a package in R (doing decison trees) which can provide some methods to evaluate the significance of attributes. I remembered randomForest gives some output like that. Unfortunately my current computing env. cannot handle my datasets if I use randomForest. So, I am thinking if other packages can do this job or not. Thanks, Ed

....000 23825.922 0.000 1544.804 rad tax ptratio black lstat 0.000 0.000 0.000 0.000 7988.955 Both gbm and randomForest has analogous measures. Andy > From: WeiWei Shi > > Hi, there: > > I am wondering if there is a package in R (doing decison trees) which > can provide some methods to evaluate the significance of attributes. I > remembered randomForest gives some output like that. Unfortunately my > current computing env. cannot handle my datasets if I use > randomForest. So, I am thinking if other packages can do this job o...

> As you can tell, the AAGC integration with speex was really a classic > hack. Instead of re-creating the hack, what's probably best here is to > integrate AAGC back into speex, and have a proper API. Agreed here. If you can come up with a clean patch to add that feature, it's something I'd like to see in Speex. > For those of you just tuning in, what I call

...e UnPackVideo). http://www.students.ic.unicamp.br/~ra031198/reconrefframes1_unpackvideo.JPG The code that is before the ExpandBlock() in the ReconRefFrames isn't in Hardware. I could to this part in Hardware and maybe to do also the UnPackVideo. The problem with UnPackVideo is because has a lot decison (if's and else's), I think it better to do in a processor. What do the function dsp_save_fpu() do? (it is betweet the UnPackVideo and ReconRefFrames) 5 - To put the current Hardware Theora of old for new VP3 codebase. Timothy told me about the old and new VP3 codebase, but I am a little c...

...t to determine what gain adjustments to make. In this fashion, you'd be making your adjustments based on the information you want: (a) the actual signal energy before processing, and (b) VAD decision. You might be able to fake it good enough by putting AAGC before AEC, and using the VAD decison from frame "n-1" when you're processing frame "n". You'll probably have enough hysteresis and a bit of history in the decision making process anyway that it might not matter. As far as gain changes messing up the rest of the preprocessing chain: It would seem to me...

I have two CentOS-6.4 servers, in different places. I am running postfix/amavis on one, and sendmail/procmail on the other. I don't recall having any difficulty setting up sendmail many years ago using sendmail.mc . But I found postfix very complicated to setup last year. (It's working fine now.) I recall that when I asked for advice one person advised me to read 2 books on postfix, and

i started on the nt domains for unix project on the basis of paul ashton's enthusiastic and "this can't be too hard" attitude, back in august 97. since then, with the encouragement of a number of people over the last three years, and with the discouragement of others, the nt domains protocols are now pretty well understood. due to that constant discouragement, i no longer find

...d on the information you want: (a) the actual signal energy before > processing, and (b) VAD decision. I don't see b) as being that important. Could help a bit, but you really want to use a). > You might be able to fake it good enough by putting AAGC before AEC, and > using the VAD decison from frame "n-1" when you're processing frame > "n". You'll probably have enough hysteresis and a bit of history in the > decision making process anyway that it might not matter. sure. > As far as gain changes messing up the rest of the preprocessing chain:...