search for: indeterminism

Displaying 20 results from an estimated 201 matches for "indeterminism".

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2009 Jun 03
2
Create a time interval from a single time variable
I am trying to set up a data set for a survival analysis with time-varying covariates. The data is already in a long format, but does not have a variable to signify the stopping point for the interval. The variable DaysEnrolled is the variable I would like to use to form this interval. This is what I have now: ID Age DaysEnrolled HAZ WAZ WHZ Food onARV
2011 Jun 09
0
Help creating a scatterplot with errorbars using gplot
I am having a problem creating a scatterplot with error bars using gplot. This is only my second day using R so I am very much a newbie. My x-values (OD600) are: 0.00400000 0.01866667 0.04733333 0.08733333 0.22466667 0.42400000 0.82066667 1.39233333 1.61100000 My y-values (cellconc) are: 2e+06 5e+06 1e+07 2e+07 5e+07 1e+08 2e+08 5e+08 1e+09 And my standard deviations (stdev) are: 0.001154701
2004 Oct 07
3
Remove Indeterminate Level
Hi, I have imported some data to R from stata and my factor variables have an Indeterminate level which I don't really want. For example the variable sex has the levels Male, Female and Indeterminate. There are no 'Indeterminate' values in the data. Can somebody tell me how to get rid of this level as it restricting my cox ph model. Thanks Neil
2012 Oct 16
2
[LLVMdev] MI DAG constructor indeterminism
Andy, This is less of a question but rather a status quo verification. We currently have certain indeterminism in MI scheduler DAG construction - it is introduces by the use of std::map/std::set during edge traversal. Result - a random variation in SUnit edge order (which will remain fixed thereafter). Logically, it is the same DAG, but topologically it is a slightly different one, and if some algorithm is...
2012 Oct 17
0
[LLVMdev] MI DAG constructor indeterminism
On Oct 16, 2012, at 1:43 PM, Sergei Larin <slarin at codeaurora.org> wrote: > > Andy, > > This is less of a question but rather a status quo verification… > > We currently have certain indeterminism in MI scheduler DAG construction – it is introduces by the use of std::map/std::set during edge traversal. > Result – a random variation in SUnit edge order (which will remain fixed thereafter). Logically, it is the same DAG, but topologically it is a slightly different one, and if some algorith...
2012 Oct 17
1
[LLVMdev] MI DAG constructor indeterminism
Andy, So if it is not a feature. then couple questions: First, I also do not see an easy way to restructure work sets in this case - so let's assume std::map is needed here. Then the way I understand it, there are five objects that cause the indeterminism: std::map<const Value *, SUnit *> AliasMemDefs, NonAliasMemDefs; std::map<const Value *, std::vector<SUnit *> > AliasMemUses, NonAliasMemUses; std::set<SUnit*> RejectMemNodes; .since all of them at different point of time are traversed begin to end, and as su...
2013 Jan 29
1
[LLVMdev] Apparent indeterminism in PreVerifier
...inced that the given loop > ends up vectorized with enough difference to cause bad things later on, but > I have not found the exact cause yet. To continue with my work I'll have to > simply turn off vectorization for now, but I will come back and investigate. > Again, there is some indeterminism in order of PHIs processing somewhere. > I'll keep you posted. > > Sergei > > --- > Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by > The Linux Foundation > > >> -----Original Message----- >> From: Nadav Rotem [mailto:nrote...
2013 Jan 29
0
[LLVMdev] Apparent indeterminism in PreVerifier
...se. By now I am convinced that the given loop ends up vectorized with enough difference to cause bad things later on, but I have not found the exact cause yet. To continue with my work I'll have to simply turn off vectorization for now, but I will come back and investigate. Again, there is some indeterminism in order of PHIs processing somewhere. I'll keep you posted. Sergei --- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation > -----Original Message----- > From: Nadav Rotem [mailto:nrotem at apple.com] > Sent: Tuesday, January 29, 2013...
2011 Mar 15
1
indeterminate for loop
Hello, I have written a 'for' loop which on the first run makes nearest neighbour calculations for my dataset 'A' in relation to dataset 'B', then based on these results, some of the rows from A are moved into dataset B, and the calculation is repeated on the remaining rows in A. Therefore a smaller and smaller amount of data is analysed as the loop proceeds, since A
2013 Jan 29
2
[LLVMdev] Apparent indeterminism in PreVerifier
...ndation > > >> -----Original Message----- >> From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] >> On Behalf Of Sergei Larin >> Sent: Tuesday, January 29, 2013 10:31 AM >> To: llvmdev at cs.uiuc.edu >> Subject: [LLVMdev] Apparent indeterminism in PreVerifier >> >> >> Hello everybody, >> >> >> I have a case of suspected indeterminism and I would like to verify >> that it is not a known issue before I dig deep into it. >> It seems to happen during PreVerifier pass ("Preliminary modu...
2010 Sep 10
0
[LLVMdev] [LLVMDev] [Register Allocation Theory] Is register allocation indeterminate?
Has anyone read anything about register allocation being indeterminate? I have seen much literature about "optimal register allocation," but does anyone know a case where it is not? Thanks, Jeff Kunkel
2020 Sep 14
2
Mem2reg: load before single store
On 9/14/20 9:30 AM, James Y Knight via llvm-dev wrote: > On Mon, Sep 14, 2020 at 3:19 AM László Radnai via llvm-dev < > llvm-dev at lists.llvm.org> wrote: > >> A problem arises, and I am not sure if it is really a problem or just >> weird C-compliant behavior. >> >> int a; // or, equally, int a=0; >> >> int main(){ >> int b; >> if
2020 Oct 09
2
Undef and Poison round table follow-up & a plan
> > // Members are initialized to poison at object creation. >> p = alloca {i8, i32} // p[0], p[4~7] are poison >> p[0] is an i8, so it shouldn't be poison? > > My interpretation of standard is that reading uninitialized char can also yield trap representation. If uninitialized, char variable has indeterminate value, and C/C++ does not seem to forbid reading trap
2013 Jan 29
0
[LLVMdev] Apparent indeterminism in PreVerifier
...ora Forum, hosted by The Linux Foundation > -----Original Message----- > From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] > On Behalf Of Sergei Larin > Sent: Tuesday, January 29, 2013 10:31 AM > To: llvmdev at cs.uiuc.edu > Subject: [LLVMdev] Apparent indeterminism in PreVerifier > > > Hello everybody, > > > I have a case of suspected indeterminism and I would like to verify > that it is not a known issue before I dig deep into it. > It seems to happen during PreVerifier pass ("Preliminary module > verification"). Th...
2013 Jan 29
2
[LLVMdev] Apparent indeterminism in PreVerifier
Hello everybody, I have a case of suspected indeterminism and I would like to verify that it is not a known issue before I dig deep into it. It seems to happen during PreVerifier pass ("Preliminary module verification"). The little I understand/assume about it, a verifier pass is not supposed to change the code (or is it?) but in debug stream I...
2016 Feb 26
2
Possible soundness issue with available_externally (split from "RFC: Add guard intrinsics")
On Thu, Feb 25, 2016 at 10:40 PM Justin Bogner via llvm-dev < llvm-dev at lists.llvm.org> wrote: > Sanjoy Das via llvm-dev <llvm-dev at lists.llvm.org> writes: > > On Thu, Feb 25, 2016 at 6:35 PM, Duncan P. N. Exon Smith > > <dexonsmith at apple.com> wrote: > >>> // In C > >>> void foo() { > >>> int c; > >>>
2005 Jul 19
2
using argument names (of indeterminate number) within a function
Although I tried to find an answer in the manuals and archives, I cannot solve this (please excuse that my English and/or R programming skills are not good enough to state my problem more clearly): I want to write a function with an indeterminate (not pre-defined) number of arguments and think that I should use the "..." construct and the match.call() function. The goal is to write
2003 Feb 17
2
returning argument names
Dear r-list folks, I have a problem which has been bugging me for a while now and I was hoping someone out there might be able to help. If I have a user-defined function with an indeterminate number of arguments, using the well-known "..." construct, how can I get the function to return the names of the items which were the arguments of the function as part of the function's
2020 Oct 10
2
Undef and Poison round table follow-up & a plan
> > Okay, it's just not immediately undefined behaviour. The C model has more > issues because of the problem with how "trap representation" is defined > (which precludes trap representations for unsigned char, two's complement > signed char, etc.). This interpretation is further stressed because C only explicitly ascribes > undefined behaviour to trap
2012 Sep 19
2
[LLVMdev] FileCheck for instructions of indeterminate order?
To test some recent changes, I need to verify that seven instructions are generated. However, the order of those instructions doesn't matter (they are all independent loads from memory). Is there a way to tell FileCheck to reset its scan position rather than assuming all CHECK: instructions must be in the given order? My initial version of the test was to use -O0, attempting to ensure that