search for: unmeasur

...ist gets mostly bugs and questions.. Due mainly to the help that this list provided, I am now able to successfully deploy Linux/Samba servers in our corporate domain, and allow remote offices to function as part of our vast windows domain. Things are working, and the $$$ it has saved us is almost unmeasurable. Again, thanks for your help, and keep up the good work!! It took me a while to admit it, but heck, samba is pretty cool.. ;) Gabriel Matthews Network Support Cinergy Communications "No. I am your father." -Darth Vader, leader, devoted parent, and friend to all.

The new package obsSens is now on the CRAN mirrors. This package has tools for doing senstitivity analysis for observational studies. The common criticism of observational studies is that there is the possibility of an unmeasured variable that is related to both the response and the predictor of interst that could explain the observed relationship. The sensitivity analysis is a "What If?" game where you specify potential relationships between the unmeasured variable and the response and predictor variable and s...

The new package obsSens is now on the CRAN mirrors. This package has tools for doing senstitivity analysis for observational studies. The common criticism of observational studies is that there is the possibility of an unmeasured variable that is related to both the response and the predictor of interst that could explain the observed relationship. The sensitivity analysis is a "What If?" game where you specify potential relationships between the unmeasured variable and the response and predictor variable and s...

...e is a gross impedance mismatch on my side of the telco switch. I believe the following is happening (latency measures are guesses): Handset -(0ms)- PAP2 -(40ms)- Asterisk -(40ms)- SPA3000 -(0ms)- Telco Does an EC algorithm need a measurable delay to work? The EC would have to cope with an almost unmeasurably small echo delay (the delay only creeps in on the other side of the IP link. Is there another way I should be solving this problem, especially as I can keep Asterisk in the loop if I want to? Thanks James

...of the protein looks periodic, but the height of the peaks is highly variable. I'm testing for periodicity using a Monte Carlo simulation envelope approach applied to a cumulative periodogram. Now I want to predict the location of the peaks in time. Of course, the peaks might be occurring on unmeasured days. Sadly, an NDA prohibits me from sharing the real data. The data look something like this: ################################################################## patient <- data.frame( day = c(1, 3, 5, 8, 10, 12, 15, 17, 19, 22, 24, 26), protein = c(5, 3, 10, 7, 2, 8, 25, 22, 7, 10, 12,...

...s of LLOD's and known values separately. There are undoubtedly more sophisticated methods out there, so this is where you need to go to the literature to see what might suit; though I think it will still have to come down to looking at these separately (e.g. with extra parameters to account for unmeasurable values). Another way of saying this is: any analysis which treats all the data as arising from a single distribution will depend more on the assumptions you make than on the data. So good luck with that! b) If you have a "modest" amount of (known) censoring -- 5%?, 20%? 10%? -- metho...

Hola! I started to search for information about multilevel survival models, and found frailty in R. This seems to be something of the same, is it the same? Then: why the name frailty (weekness?) -- Kjetil Halvorsen. Peace is the most effective weapon of mass construction. -- Mahdi Elmandjra

...and known values separately. There are undoubtedly more >sophisticated methods out there, so this is where you need to go to the >literature to see what might suit; though I think it will still have to >come down to looking at these separately (e.g. with extra parameters to >account for unmeasurable values). Another way of saying this is: any >analysis which treats all the data as arising from a single distribution >will depend more on the assumptions you make than on the data. So good luck >with that! > >b) If you have a "modest" amount of (known) censoring -- 5%?...

...protein = c(5, 3, 10, 7, 2, 8, 25, 12, 7, 20, 10, 5) ) plot(patient$day, patient$protein, type="b") My goal is two-fold: firstly, I need to test for periodicity, and secondly, I need to try to predict the temporal location of future peaks. Of course, the peaks might be occurring on unmeasured days. I have been looking at this model: wave.form <- deriv3( ~ sin(2*pi*((day-offset)/period + 0.25)) * amplitude + mean, c("period", "offset", "amplitude", "mean"), function(day, period, offset, amplitude, mean){}) curve(wave.fo...

I''m trying to ensure that I keep the number of queries down a bit. If I have two model (lets call them Foo and Bar). They have a many to many relationship. Now I want to get (and paginate) records from Bar that are related to a certain record in Foo. For example I want all records from Bar whose name starts with ''C'' and are related to record Foo whose name is

...respondent likes the Republican Party in America. By the usual simultaneous equation argument, one should not simply run 2 polr polr (Y1 ~ Y2 + X1 +X2) and polr(Y2 ~ Y1 + X1 + X2) because Y1 and Y2 are endogenous. Where does the problem arise? Thinking back to the theoretical model, there are unmeasured scale variables y1* and y2* that are determined by y1* = b0 + b1 * y2 + b2 * X1 + b3 * X2 + e1 and y2* = c0 + c1 * y1 + c2 * X1 + c3 * X2 + e2 y1* and y2* are not observed, we see only the categorical outputs Y1 and Y2 that correspond to Y1 = 0 if y1* < pi1 Y1 = 1 if pi1 <=...

Sorry for replying in this way, I can send to the list ok, but I can't seem to subscribe to the list. majordomo doesn't accept my email address as a valid address (k.j.wierenga@home.nl > This is primarily to allow clean shutdown to proceed normally. The CPU load is > nominal - I doubt you'd be able to measure it. However, if you want to change > this timeout, it's safe

...> doesn't, normal allocation takes place. > > The "free list" is stored as two small fixed size arrays containing > size/address pairs. Searching is done linearly using code that > optimizes to SIMD comparisons. For 4/8/16 slots overhead of the > search should be unmeasurably fast. > > The key to the approach would be keeping it simple, and realizing that > the goal is only to get the lowest hanging fruit: repeated > assignments of large arrays used in a loop. If it's complex, skip it > --- the behavior will be no worse than current. > > B...

Hi, (Assume VPID is available and enabled.) I''m trying to figure the TLB stuff with VPIDs. I understand from the poorly written chapter in the intel manual that if an HVM vcpu is running then only the TLBs tagged with the vcpu.VPID will be used. If xen or a PV guest is running, then VPID 0 TLBs are what will be used. Now I understand the hvm_asid_flush_vcpu upon new guest cr3, will

> ... with assignments inside of loops like this: > > reweight = function(iter, w, Q) { > for (i in 1:iter) { > wT = w * Q > } > } > ... before the RHS is executed, the LHS allocation would be added > to a small fixed length list of available space which is checked > before future allocations. If the same size is requested before the > next garbage

...uits and recycles it. If it doesn't, normal allocation takes place. The "free list" is stored as two small fixed size arrays containing size/address pairs. Searching is done linearly using code that optimizes to SIMD comparisons. For 4/8/16 slots overhead of the search should be unmeasurably fast. The key to the approach would be keeping it simple, and realizing that the goal is only to get the lowest hanging fruit: repeated assignments of large arrays used in a loop. If it's complex, skip it --- the behavior will be no worse than current. By the way, what's happening w...

On Mon, 22 Jan 2024, Martin Maechler wrote: > I think it is a good question, not really only about geo-chemistry, but > about statistics in applied sciences (and engineering for that matter). > John W Tukey (and several other of the grands of the time) had the log > transform among the "First aid transformations": > > If the data for a continuous variable must all be

...d' frailty models are implemented in practice, to group people who are from a cluster to account for homogeneity in outcomes for people from the same cluster. I am more interested in the classic frailty model, 'Early frailty models incorporated subject-specific random effects to account for unmeasured subject characteristics that influenced the hazard of the occurrence of the outcome'. This is because I have data where I would like to estimate the amount of variation between patients risks that has not been accounted for by adjusting for the variables that I have. I initially ran some s...

I took 5 albums (Classical music) and converted them to Ogg Vorbis at "Full Bitrate" (-q10) and all 5 directories take up about 775 Megs which won't fit on a CD. So I ripped them again in WAV first (And give my friend back his CDs) but now I wanna know what quality setting should I use to fit them on 1 CD (The highest possible with total space used just under 700 Megs)

Hi, This is not an R question, but I've seen opinions given on non R topics, so I wanted to give it a try. :) How would one treat a variable that was measured once, but is known to fluctuate a lot? For example, I want to include a hormone in my regression as an explanatory variable. However, this hormone varies in its levels throughout a day. Nevertheless, its levels differ substantially