Arpad, "(PDF 0 0.5 0.01)" is not illegal. The rules clearly state that | 3. A parameter value in a name/value pair can be either a single value or a | list of values separated by whitespace. As stated on page 186 of IBIS 5.0. There is an example that demonstrates that as well. Thanks, Ambrish. ________________________________ From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Muranyi, Arpad Sent: Tuesday, March 16, 2010 2:07 PM To: ibis-macro@xxxxxxxxxxxxx Subject: [ibis-macro] Re: question about Gaussian parameter As far as I can tell, this format "(PDF 0 0.5 0.01)" is not only questionable in its interpretation, but doesn't it violate the concept of name/value pair we have in the tree syntax? If I am not mistaken about that, this seems to be related to the problem we ran into with the tap coefficients, where one vendor we all know uses a similar one name, multiple number format, which might be considered a vector (or array), that can't be done according to the current official AMI spec. Arpad ============================================================== ________________________________ From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Ambrish Varma Sent: Tuesday, March 16, 2010 12:02 PM To: ibis-macro@xxxxxxxxxxxxx Subject: [ibis-macro] Re: question about Gaussian parameter Radek, There is a slight problem with Gaussian, Dual-Dirac and DJRJ (more so with Dual-Dirac and DjRj than with Gaussian). Dual-Dirac can be expressed in this format: (PDF (Format Dual-Dirac <mean> <mean> <sigma>)) for ex: (PDF (Format Dual-Dirac 0 0.5 0.01)) and DjRj in this format: (PDF (Format Dual-Dirac <meanDj> < maxDj > <sigma>)) for ex: (PDF (Format Dual-Dirac 0 0.5 0.01)) So if you don't specify if its Dual-Dirac or DjRj, the pram input string will look like this for both: (PDF 0 0.5 0.01) How would you know which type of format to apply to PDF. Thanks, Ambrish. ________________________________ From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of radek_biernacki@xxxxxxxxxxx Sent: Tuesday, March 16, 2010 12:47 PM To: ibis-macro@xxxxxxxxxxxxx Subject: [ibis-macro] Re: question about Gaussian parameter Walter, I do not think we can "remove" Gaussian from the specification. It is already there. As a matter of fact we should try to clarify issues like this one, wherever there is a possibility for misinterpretation. For Fangyi's question I think the logically correct answer should be the second one: (PDF 0.0 0.01) It follows the concept of (leaf_name value) where "value" in this case consists of two numbers. Radek From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Walter Katz Sent: Tuesday, March 16, 2010 6:25 AM To: RAO,FANGYI (A-USA,ex1); ibis-macro@xxxxxxxxxxxxx Subject: [ibis-macro] Re: question about Gaussian parameter Fangyi, One of the reasons why I have proposed removing Gaussian as a type in the new BIRD. Walter Walter Katz 303.449-2308 Mobile 720.333-1107 wkatz@xxxxxxxxxx www.sisoft.com -----Original Message----- From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx]On Behalf Of fangyi_rao@xxxxxxxxxxx Sent: Tuesday, March 16, 2010 1:24 AM To: ibis-macro@xxxxxxxxxxxxx Subject: [ibis-macro] question about Gaussian parameter Hi, Experts; If an AMI model has a parameter (PDF (Format Gaussian 0.0 0.01)), what should the Init input parameter string be? Should it be (PDF Gaussian 0.0 0.01) or (PDF 0.0 0.01) or other format? Thanks in advance, Fangyi