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------------------------------------------------------------------- This list is for discussion of modelling issues and the BUGS software. For help with crashes and error messages, first mail [log in to unmask] To mail the BUGS list, mail to [log in to unmask] Before mailing, please check the archive at www.jiscmail.ac.uk/lists/bugs.html Please do not mail attachments to the list. To leave the BUGS list, send LEAVE BUGS to [log in to unmask] If this fails, mail [log in to unmask], NOT the whole listHi,
I have been trying to compute DIC in WINBUGS without any luck. Everything seems fine with the model, data, and model compile.
# definitions
# I : No of Items
# J : No of examinees
#MODEL
{
for (j in 1:J) {
for (i in 1:I) {
logit(prob[i,j]) <- theta[j]-delta[i]
y[i,j] ~ dbern(prob[i,j]) # response has bernoulli distribution
}
}
# Priors and identification
for (j in 1:J)
{
theta[j] ~dnorm(mu,tau)
}
for (i in 1:I)
{
deltaD[i] ~ dnorm(0, 1)
delta[i] <-deltaD[i] - mean(deltaD[]) # sum to zero constraint
}
mu ~ dnorm (0,1)
tau <- 0.368 # appoximates variance of the standard logistic distribution
sigma <- 1/sqrt(tau)
}
Here’s the trap message I keep getting and really need some help here;
NIL dereference (read)
DeviancePlugin.Monitor.Update [00000080H]
.chain INTEGER 0
.i INTEGER 0
.monitor DeviancePlugin.Monitor [027886C0H]
UpdaterActions.UpdateMonitors [0000011CH]
.chain INTEGER 0
.monitor UpdaterActions.Monitor [027886C0H]
BugsCmds.Action.Step [00000BCAH]
.a BugsCmds.Action [02823B80H]
.chain INTEGER 0
.i INTEGER 1
.j INTEGER 1
.numChains INTEGER 1
BugsCmds.Action.Do [00000C58H]
.a BugsCmds.Action [02823B80H]
.elapsedTime LONGINT 657B21F1657A0384H
.profileList ARRAY 2024 OF CHAR "" ...
.res INTEGER 1670599263
.s ARRAY 120 OF CHAR 4E8DX, 7315X, 614X, 11X, 0C019X ...
Services.Exec [00000136H]
.a Services.Action [02823B80H]
.t POINTER [657A0384H]
Services.IterateOverActions [000002F4H]
.p Services.Action [02823B80H]
.t POINTER NIL
.time LONGINT 6107579
Services.StdHook.Step [0000034DH]
.h Services.StdHook [0275E380H]
HostWindows.Idle [00004A86H]
.focus BOOLEAN FALSE
.tick Controllers.TickMsg Fields
.w HostWindows.Window NIL
HostMenus.TimerTick [00003422H]
.lParam INTEGER 0
.ops Controllers.PollOpsMsg Fields
.wParam INTEGER 1
.wnd INTEGER 1114886
Kernel.Try [00003A61H]
.a INTEGER 1114886
.b INTEGER 1
.c INTEGER 0
.h PROCEDURE HostMenus.TimerTick
HostMenus.ApplWinHandler [00003841H]
.Proc PROCEDURE NIL
.hit BOOLEAN Undefined98
.lParam INTEGER 0
.message INTEGER 275
.res INTEGER 1
.s ARRAY 256 OF SHORTCHAR "$ú(" ...
.w INTEGER 2425500
.wParam INTEGER 1
.wnd INTEGER 1114886
<system> (pc=761562F9H, fp=0028FB3CH)
<system> (pc=76156D39H, fp=0028FBB4H)
<system> (pc=761577C3H, fp=0028FC14H)
<system> (pc=76157BC9H, fp=0028FC24H)
HostMenus.Loop [00003BDEH]
.done BOOLEAN FALSE
.f SET {0..5}
.n INTEGER 10
.res INTEGER 0
.w HostWindows.Window NIL
Kernel.Start [00002B8CH]
.code PROCEDURE HostMenus.Loop
Your help will be greatly appreciated!
Catherine
Catherine