search for: silverman

Hi! I'm trying to implement in R in an easy way the negative reflection method described in Silverman (1986) on p.31, ie I have a non-negative dataset and would like to estimate the density by applying a reflection method where the reflected points have weight -1. I thought there should be a way to evaluate the wanted kernel at the required points, in other words to calculate formula (2.16): fhat(x...

...;ve already tried ripping out the decoder, and a stripped build can fit in 160k. But, on speed and RAM, any thoughts on the feasibility, or what I'd have to do to make this work? P.S. I sent this to the mailing list before, but I never saw it appear. Sorry if this is a duplicate. -- Brian Silverman Ready Set STEM bri at readysetstem.com -- -- Brian Silverman Ready Set STEM bri at readysetstem.com 443-850-5351 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xiph.org/pipermail/opus/attachments/20170309/240db568/attachment.html>

Dear R users, I've written the following functions to implement Silverman's modality test ("Using kernel density estimates to investigate multimodality", J.R. Stat. Soc. B, 43, (1981), 97-99.), and I tested them on the Chondrite data set (Good & Gaskins, J. Amer. Stat. Ass., 75, (1980), 42-56). Values for the critical window width seem OK, which is not...

Dear Readers: I have two issues in nonparametric statistical analysis that i need help: First, does R have a package that can implement the multimodality test, e.g., the Silverman test, DIP test, MAP test or Runt test. I have seen an earlier thread (sometime in 2003) where someone was trying to write a code for the Silverman test of multimodality. Is there any other tests that can enable me to know how many modes are in a distribution? Second, i would like to test whether t...

...were created for the libsvm tool. They are in "colon separated sparse format". i.e. 1 5:1 27:3 345:10 Is a row with the label of "1" and only has values in columns 5, 27, and 345. I want to read these into a data.frame in R. Is there a simple way to do this? -- Noah Silverman, M.S. UCLA Department of Statistics 8117 Math Sciences Building Los Angeles, CA 90095

People, While installing 5.4, I ran into an unhandled exception. It generated a log file, which I saved successfully. Unfortunately, I neglected to write down where to send the log file. Where does it go? Thank you Jeff Jeff Silverman | Network Support Engineer D 206.272-6465 F 206.272-5541 www.f5.com<http://www.f5.com> [file:///C:\Documents%20and%20Settings\silverman\Application%20Data\Microsoft\Signatures\f5_logo_2009.gif] -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://li...

...This is slightly more difficult as there may not be an observation for every day. So I might want the last 5 that exist in the table, not the last 5 calendar days. ideally, it would be something like this. observations[ index(today)-5:today, ] However that obviously fails. Ideas? -- Noah Silverman, M.S. UCLA Department of Statistics 8117 Math Sciences Building Los Angeles, CA 90095

...bc var_cat <- dfd mean_dog <- 123 var_dog <- 453 etc.. ############## I thought of trying to use the paste() function to create the variable name, but that doesn't work: for( animal in animals){ paste("mean", animal "_") <- 123 } Any ideas??? Thanks -- Noah Silverman

...ly simple front-end for someone to use an R script system that I've built. My thought was to just use the text based menus available in the base R package, perhaps in some kind of loop. How have other people done this? Any "best practices" that you can recommend? Thanks! -- Noah Silverman UCLA Department of Statistics 8117 Math Sciences Building Los Angeles, CA 90095 [[alternative HTML version deleted]]

...king at the description, it appears to be a nice GUI to some very simple models that could be easily constructed in R. Are there any packages in R for this type of analysis? Additionally, does anyone have any suggestions in general regarding doing this type of analysis in R? Thank You, -- Noah Silverman UCLA Department of Statistics 8117 Math Sciences Building Los Angeles, CA 90095 [[alternative HTML version deleted]]

Hi, I'm looking at the "cocktail party" classic problem. I can see how to use ICA to separate the components. But, How do I then create new wav files of the separated sounds so that they can be played? Thanks -- Noah Silverman UCLA Department of Statistics 8208 Math Sciences Building Los Angeles, CA 90095 [[alternative HTML version deleted]]

...or(i in 2:N){ data$ewma <- alpha * data$ewma[i-1] + (1-alpha) * data$value[i] } Since the moving average "accumulates" as we move through the data, I'm not sure on the best/fastest way to do this. Does anyone have any suggestions on how to avoid a loop doing this? -- Noah Silverman UCLA Department of Statistics 8117 Math Sciences Building #8208 Los Angeles, CA 90095 [[alternative HTML version deleted]]

...get a nice list. (Same error repeatedly, so probably something I'm using in a loop.) The difficult part is I have no idea *where* the warning is being generated. Is there a way to get R to either halt on warning, or give me more detail when listing warnings after execution? Thanks! -- Noah Silverman UCLA Department of Statistics 8208 Math Sciences Building Los Angeles, CA 90095

...column onto my data set. But, that seems painful. There must be a better way. Is there an "easy" way to do this in R? (Note, I don't want to internally represent the levels in the data set, but physically have new columns for each level with a binary indicator.) Thanks! -- Noah Silverman UCLA Department of Statistics 8117 Math Sciences Building Los Angeles, CA 90095

...01, 00, 00, 00, 00, 00, 00, 00, 00, 00, 5949: e0, 3f ^ ERROR: unable to collate and parse R files for package ?foo? Can anyone help explain what is happening here? This is the most generic and empty package I can think of, so not sure why a build is failing. Thanks! -- Noah Silverman UCLA Department of Statistics 8117 Math Sciences Building Los Angeles, CA 90095

...urity.ssh, with a patch which fixes the problem. I don't know if it's the right thing to do, though. I'm guessing that not counting larval channels might have been a mistake. Perhaps counting them will cause some other problem, though, and the right fix is something else? -- Richard Silverman slade at shore.net ============================================================================ Newsgroups: comp.security.ssh Subject: Re: POP3 Tunnel Closes on Second Connection References: <3AC4AAE0.4EE58BE9 at well.com> From: slade at shore.net (Richard E. Silverman) Date: 05 Apr 2001 0...

Hi, Our discussions about 64 bit R has led me to another thought. I have a nice dual core 3.0 chip inside my Linux Box (Running Fedora 11.) Is there a version of R that would take advantage of BOTH cores?? (Watching my system performance meter now is interesting, Running R will hold a single core at 100% perfectly, but the other core sites idle.) Thanks! -- Noah

...5.7 <2.0 3.7 Since this column in Excel has a "<2.0" value, then R reads the column as a factor with levels. Ideally, I want to convert it a normal vector of scalars and code code the "<2.0" as 0. Can anyone suggest an easy way to do this? Thanks! -- Noah Silverman UCLA Department of Statistics 8117 Math Sciences Building Los Angeles, CA 90095 [[alternative HTML version deleted]]

...les. So, I could have a function return a list, and then parse that list every time, but that seems like an excessive amount of overhead. (Especially as some functions may be called many many times.) How have some of you handled this? Is there a "best practices" way? Thanks! -- Noah Silverman UCLA Department of Statistics 8117 Math Sciences Building Los Angeles, CA 90095

...ive values to fit a log-Normal When I try to build a simple model, I also get an error: l <- glm(y~ x, family=gaussian(link="log")) Error in eval(expr, envir, enclos) : cannot find valid starting values: please specify some Can anyone offer some suggestions? Thanks! -- Noah Silverman, M.S. UCLA Department of Statistics 8117 Math Sciences Building Los Angeles, CA 90095