Displaying 20 results from an estimated 367 matches for "insignificant".
2011 Nov 23
2
Correlation matrix removing insignificant R values
Hello.
I have a large dataset with sales pr month for 56 products with 10 months
and i have tried to see how the sales are correlated using
cor()
This has given me a 56X56 matrix with the R value for each product pair.
Most of these correlations are insignificant, and i want only to retain the
instances were the R value is significant (for 10 observations it should be
above 0.64)
Can someone help with this?
--
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2012 Nov 21
1
update fit (removing insignificant variables)
...6720? 10.61075 1.285606e-04
#X8?????????? -1.9560052? 0.14204298 -13.77052 3.625118e-05
A.K.
________________________________
From: farnoosh sheikhi <farnoosh_81 at yahoo.com>
To: arun <smartpink111 at yahoo.com>
Sent: Wednesday, November 21, 2012 2:47 PM
Subject: update fit (removing insignificant variables)
Hi there,
I have a question for removing insignificant predictors from fit.
The output looks like below but with 170 predictors.
Lab_1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?0.037928 * ?
Lab_2 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?0.030423...
2009 Jun 13
1
Insignificant variable improves AIC (multinom)?
Hi,
I am trying to specify a multinomial logit model using the multinom function from the nnet package. Now I add another independent variable and it halves the AIC as given by summary(multinom()). But when I call Anova(multinom()) from the car package, it tells me that this added variable is insignificant (Pr(>Chisq)=0.39). Thus, the improved AIC suggests to keep the variable but the Anova suggests to drop it.
I am sure this is due to my lack of understanding of these models but could someone help me out with a pointer what my mistake is?
Thanks so much,
Werner
2005 Apr 06
1
insignificant factors in regression model
...categorical predictor variable coded
by treatment contrasts. The summary of the regression model shows that some
levels are significant while others are not. The significant ones show that
they are statistically significant from the basis factor (at level 0). How
do we generally deal with those insignificant levels? If they are used for
prediction, sometimes they will produce strange results because their
coefficient estimates have large variances. Do we just simply ignore them
assuming they are not different from level 0? Or do we exclude them in
factors (by treating them as zero's) and refit...
2009 Mar 24
1
Do we have to control for block in block designs if it is insignificant?
I am wondering if in a block experimental design (ex. triple square lattice), the block effect was not significant, is it all right not to include the block effect in an empirical model (even though the sampling was done from different blocks)? Or we are forced to control for the block effect in block designs anyway?
Thanks,
Julia
2009 Jun 23
1
How to exclude insignificant intercepts using "step" function
...+6*ind[,"x1"]*ind[,"x2"]+rnorm(100,0,0.05),grp=rep("C",100))
data2 <- rbind(d1,d2,d3)
# Fit each surface by grp
model <- y ~ x1*x2
by(data2, data2$grp, function(x) {step(lm(model, data=x))})
--
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2004 Jun 08
1
One final minor trivial insignificant pointless patch
[this address is IPv6-only, and usually doesn't work, so don't.]
There's another patch I have up my sleeve, that it would be nice
if I didn't need to apply it by hand. Look:
vorbis-tools/oggenc/encode.c
--- encode.c-DIST Fri Jul 19 08:35:48 2002
+++ encode.c Fri Jan 9 07:46:27 2004
@@ -346,7 +342,7 @@
seconds = (int)(remain_time - (double)((int)remain_time/60)*60);
2006 Feb 23
2
Strange p-level for the fixed effect with lme function
...000
F2 -0.008679 0.00616191 659 -1.40855 0.1594
MI 0.009476 0.00258605 659 3.66420 0.0003
As you can see, in exp1 p-levels for the model and for the fixed effects
are the same, as thay should be, as far as I know. Yet, in exp2 there is
significant p for F2 in the model, but insignificant regarding F2 as
fixed factor. How is it possible? I have ran many linear models and
those two values correspond (or are the same). Anyway, how can it be to
have insignificant effect that is significant in the model? Some strange
property of that factor, like distribution? Multicolinearity? Please,...
2009 Mar 15
1
Tukey, planned contrasts or t-test without ANOVA? What is correct?
...ean monthly body temperature between two age classes of turtles overwintering underground.
lm(body_tem ~ Month*Year*Age_Class)
TukeyHSD(aov(body_tem ~ Month*Year*Age_Class, a))
The Tukey HSD as well as the planned contrasts method showed significant differences between the two age classes, but insignificant differences between the two age classes at the same levels of months.
In the opposite, using a t-test for comparison of independent means (i.e. without using the ANOVA) it demonstrated insignificant differences between the two age classes. What result is correct?
Thanks,
Julia
________________...
2020 Aug 22
3
[RFC][LLVM] New Constant type for representing function PLT entries
> -----Original Message-----
> From: Fāng-ruì Sòng <maskray at google.com>
> Sent: Friday, August 21, 2020 4:04 PM
> To: Eli Friedman <efriedma at quicinc.com>
> Cc: Leonard Chan <leonardchan at google.com>; llvm-dev at lists.llvm.org
> Subject: [EXT] Re: [llvm-dev] [RFC][LLVM] New Constant type for
> representing function PLT entries
>
> On Fri, Aug
2020 Aug 30
2
[RFC][LLVM] New Constant type for representing function PLT entries
...on x86, so that’s what inspired the naming. The intended behavior of this IR level change is that at least on x86 or aarch64, the resolved constant could be lowered to something that has the `@plt` syntax, but I suppose other targets could have their own meaning for “the address of this function is insignificant.”
>
> Abstraction: The IR representation of this probably shouldn’t be too strictly mapped to object file representations. It’s useful to have an IR pattern that can be mapped to relocations on different binary formats, but we don’t want to introduce a state where we have new Constants for i...
2016 Jun 23
3
FSMO / ldbsearch
Hi,
After a couple of unfortunate hardware failures and some not insignificant
amount of work to rebuild two of my DCs, I am trying to check that things
are now working correctly.
Looking at the wiki page on FSMO ownership, one suggestion is to run the
following ldbsearch command.. but this doesn't work for me.
root at dc2:~# ldbsearch --cross-ncs -H /var/lib/samba/priv...
2020 Aug 21
3
[RFC][LLVM] New Constant type for representing function PLT entries
...ardchan at google.com>
> Cc: llvm-dev <llvm-dev at lists.llvm.org>
> Subject: [EXT] Re: [llvm-dev] [RFC][LLVM] New Constant type for
> representing function PLT entries
>
> A @plt modifer (x86-32, x86-64 and aarch64) in assembly refers to a
> function whose address can be insignificant. The assembler produces an
> R_386_PLT32/R_X86_64_PLT32/R_AARCH64_PLT32 relocation which will be
> resolved by the linker to either:
>
> * the definition (non-preemptible (logical AND (non-ifunc or ld.lld -z ifunc-
> noplt is specified)))
> * a PLT entry (other cases)
>
> Th...
2005 May 23
1
comparing glm models - lower AIC but insignificant coefficients
Hello,
I am a new R user and I am trying to estimate some generalized linear
models (glm). I am trying to compare a model with a gaussian
distribution and an identity link function, and a poisson model with
a log link function. My problem is that while the gaussian model has
significantly lower (i.e. "better") AIC (Akaike Information
Criterion) most of the coefficients are not
2024 Jul 16
2
Interpreting p values of gls in nlme
...have undertaken some phylogenetic and non-phylogenetic regressions with
gls() in nlme with single preictor variables. A p value is associated with
the intercept (upper p value) and another with the predictor variable
(lower). Which p value is important? What does it mean if the intercept p
value is insignificant but the predictor is still significant?
Thanks a lot, and sorry for my ignorance,
Roland
[[alternative HTML version deleted]]
2011 Jun 14
2
[LLVMdev] Avoiding Constant Folding
...front-end be correct;
passes like mem2reg will turn your variables into registers if possible
anyway). And there's also not much point in trying to keep the bitcode small
so as to speed up the optimizers: it will just make your front-end more
complicated, while probably the gains (if any) are insignificant. My advice
is to keep your front-end as simple as possible. You can run some per-function
passes as you output each function, to clean it up and reduce the bitcode size,
for example simplifycfg+scalarrepl+instcombine, if memory usage is a problem.
Ciao, Duncan.
2002 Dec 10
2
incomprehesible quirk
...FBSD 4.7, samba
2.2.7 and cups 1.1.15.1_4.
When I log onto FBSD with username, password, I see the folders for the
printers, home, tmp, etc. but no printer. (Only 1 installed - Epson Stylus
Color 900).
I can access the shares on FBSD from Win2k, but there is no printer.
If I edit smb.conf, with insignificant changes not affecting the printer
sections (Printers and Print$) the printer appears.
As a side note, I think that the Printer$ section may not be needed if I do
not install any Windows or other special drivers - frankly, I don't know
why it is even there :((
It appears that editing smb.co...
2008 Mar 13
3
Whitespace in SuperRedCloth
Up to now, the tests have been running with whitespace stripped out.
Newlines and tabs are insignificant in HTML, so I figured why bother
with them?
Now I realize why: they''re significant in pre tags and they also make
your code look pretty!
I''ve been working to get SRC output to roughly match Tetxile2''s as
far as tabs and newlines go. It''s tough and is add...
2009 Sep 30
2
XEN 3.4.1|HVM|physical disk access
Hello folks,
i do not get access to a physical disk with xen. I would like to install
windows xp as hvm to the physical partition /dev/sdb1.
I partioned the disk with cfdisk. Filesystem type is Linux (83). In my
eyes the filesystem using hvm is insignificant(?).
I tried the following configurations; probably a lot more than this.
#disk = [ ''phy:hda1,hda1,r'' ] (comment from xmexample.hvm form /ect/xen)
disk = [ ''phy:/dev/sdb1,sda,w'' ]
disk = [ ''phy:/dev/sdb1,hda,w'' ]
disk = [ ''phy:/dev/sd...
2012 Mar 26
13
blkback global resources
...eqs to >= %ld.",
blkif_reqs, order, KBUILD_MODNAME,
roundup_pow_of_two(BLK_RING_SIZE(order)));
indicating that this _is_ a bottleneck), I''m otoh hesitant to convert
this to per-instance allocations, as the amount of memory taken
away from Dom0 for this may be not insignificant when there are
many devices.
Does anyone have an opinion here, in particular regarding the
original authors'' decision to make this global vs. the apparently
made observation (by Daniel Stodden, the author of said patch,
who I don''t have any current email of to ask directly), but...