Search found 69 matches

by moudi
Mon Mar 13, 2017 10:22 am
Forum: Ventity
Topic: Mortality rates in a cohort model depending on creation time of the cohort
Replies: 28
Views: 60932

Re: Mortality rates in a cohort model depending on creation time of the cohort

The model works fine! And the next questions arrive immediately... I would like to have to "strains" in the model, a population with a low risk and a population with a increased risk for coronary heart disease. I decided to refer to blood pressure (together with gender and age). For this r...
by moudi
Mon Mar 06, 2017 12:56 pm
Forum: Ventity
Topic: Mortality rates in a cohort model depending on creation time of the cohort
Replies: 28
Views: 60932

Re: Mortality rates in a cohort model depending on creation time of the cohort

I realised that there is a problem with Births exogenous in the current model. As I wrote in the previous post, the model works fine with the annual mortality rates. However, Births are all added to only one cohort, the year-2000 cohort! In the model which you posted (CohortPopGroups3 Test Swiss Pop...
by moudi
Fri Feb 10, 2017 2:36 pm
Forum: Ventity
Topic: Mortality rates in a cohort model depending on creation time of the cohort
Replies: 28
Views: 60932

Re: Mortality rates in a cohort model depending on creation time of the cohort

Thanks for your helpful posts! I used now annual existing cohorts and also annual mortality rates. With these data the periodicity disappears and also the discontinuity with regard to Sum deaths. To make it simple for this test I used the same mortality rates (year 2000) for all years of birth. Due ...
by moudi
Tue Feb 07, 2017 3:11 pm
Forum: Ventity
Topic: Mortality rates in a cohort model depending on creation time of the cohort
Replies: 28
Views: 60932

Re: Mortality rates in a cohort model depending on creation time of the cohort

Wonderful! It does what I imagined. Thanks a lot! However, I have a computational problem. When I look at Sum deaths these figures are too high (by a factor of 2 in 2000, compared to historical data). The decay afterwards can partially be explained by the fact that I did not yet include Net migratio...
by moudi
Fri Feb 03, 2017 12:20 pm
Forum: Ventity
Topic: Mortality rates in a cohort model depending on creation time of the cohort
Replies: 28
Views: 60932

Re: Mortality rates in a cohort model depending on creation time of the cohort

Hi There are indeed inconsistencies for deaths which are problematic. The mortality data are available as - mortality tables (mortality rates for each year of birth, age, gender) for existing cohorts (> 1900) as well as for future cohorts (assumptions used to calculate population projections). - Dea...
by moudi
Tue Jan 24, 2017 2:45 pm
Forum: Ventity
Topic: Mortality rates in a cohort model depending on creation time of the cohort
Replies: 28
Views: 60932

Re: Mortality rates in a cohort model depending on creation time of the cohort

Hi Here you find an example of the cohort model we discussed about for the Swiss population for 2000-2030. I used existing cohorts from 1900-1990 with the corresponding, available age mortality rates. For 2000-2030 I used a default age mortality rate lookup (using the data of 2010). Is there a bette...
by moudi
Thu Jan 19, 2017 5:57 pm
Forum: Ventity
Topic: Mortality rates in a cohort model depending on creation time of the cohort
Replies: 28
Views: 60932

Re: Mortality rates in a cohort model depending on creation time of the cohort

Thanks for your suggestions. I did the following so far: I used different Age mortality rate lookups for different existing cohorts, thus I put the Age mortality lookup in the cohort entity and initialized it for each existing cohort separately. The data are similar to your example, derived from the...
by moudi
Mon Jan 16, 2017 2:48 pm
Forum: Ventity
Topic: Minor question for CohortPop2
Replies: 1
Views: 2845

Minor question for CohortPop2

Hi

When testing the CohortPop2 model I get a warning saying that there is a mismatch between expression contents and diagram causal links. Though there is no computational problem, it is not clear to me, what the warning means.
by moudi
Mon Jan 16, 2017 8:51 am
Forum: Ventity
Topic: Mortality rates in a cohort model depending on creation time of the cohort
Replies: 28
Views: 60932

Mortality rates in a cohort model depending on creation time of the cohort

Hi

I have a question regarding a cohort model. For a correct population model which reflects the technical and medical progress, the table for mortality rates should depend on the creation time of the cohor. How should this be implemented?

Best regards

Justus
by moudi
Tue Aug 30, 2016 7:42 am
Forum: Ventity
Topic: cohort modeling examples
Replies: 21
Views: 15491

Re: cohort modeling examples

Thanks

I tried now the model with constant exogenous births and intervals of 10 and 1 year, assuming that no differences in Sum Population should occur. However, they still prevail, presumably due to the same table issue with regard to mortality.
Cohort Pop 4 deaths.JPG
Cohort Pop 4 deaths.JPG (48.46 KiB) Viewed 13970 times
by moudi
Mon Aug 29, 2016 9:20 am
Forum: Ventity
Topic: cohort modeling examples
Replies: 21
Views: 15491

Re: cohort modeling examples

Hi First, let me thank you for the wonderful videos with the SIR-model! Today let me ask a question about a cohort model you posted previously (e.g. CohortPop4). Here the results depend strongly on the choice of the cohort creation interval (in case of endogenous births). Three questions: a) What is...
by moudi
Mon Jul 04, 2016 1:49 pm
Forum: Ventity
Topic: use entities in new diagram
Replies: 4
Views: 4791

Re: use entities in new diagram

Sorry I wanted to paste part of an existing structure ("paste" NOT "paste as new").
by moudi
Mon Jul 04, 2016 1:46 pm
Forum: Ventity
Topic: use entities in new diagram
Replies: 4
Views: 4791

Re: use entities in new diagram

I wanted to paste a part of the model onto a new diagram (replicate). The structure is not fully visible (see the attached document and the ventity model). In particular the flows are not visible. Moreover, I'm not sure if the "copy paste" functionalities work properly.
by moudi
Fri Jul 01, 2016 12:28 pm
Forum: Ventity
Topic: Use different table functions
Replies: 17
Views: 12453

Re: Use different table functions

YES, this was the problem. Now the models work fine. Thanks!
by moudi
Thu Jun 30, 2016 7:12 pm
Forum: Ventity
Topic: Use different table functions
Replies: 17
Views: 12453

Re: Use different table functions

12 May 2016
by moudi
Thu Jun 30, 2016 9:21 am
Forum: Ventity
Topic: Use different table functions
Replies: 17
Views: 12453

Re: Use different table functions

Hi When trying the DiffLookup1 model I got this message: Product: Ventity (beta) Version: 1.0.1.0 Assembly Name Assembly Version Accessibility 4.0.0.0 file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Accessibility/v4.0_4.0.0.0__b03f5f7f11d50a3a/Accessibility.dll Antlr4.Runtime.v4.5 1.0.1.0 file://...
by moudi
Tue Jun 28, 2016 6:32 am
Forum: Ventity
Topic: Use different table functions
Replies: 17
Views: 12453

Re: Use different table functions

Thanks! However, how do I tell Ventity to use two different table functions, one for "round", the other for "square" (see the attached example)? I tried to use the external file with the format indicated for table functions. Ventity seems not to be able to read this format (a pro...
by moudi
Thu Jun 16, 2016 12:24 pm
Forum: Ventity
Topic: Use different table functions
Replies: 17
Views: 12453

Re: Use different table functions

Wonderful! No hurry!
by moudi
Tue Jun 14, 2016 6:35 am
Forum: Ventity
Topic: use entities in new diagram
Replies: 4
Views: 4791

use entities in new diagram

Sorry for asking again... How do I use existing entities in a new diagram? I went to the entity inspector of the "widget" entity, created a new diagram, and wanted to use some existing entities in this diagram. It works, but I cannot link them, e.g. flows out/in from a stock. How can I do ...
by moudi
Tue Jun 14, 2016 5:38 am
Forum: Ventity
Topic: Use different table functions
Replies: 17
Views: 12453

Re: Use different table functions

Great!

Do you have an idea how long it will take you to fix the problem?
by moudi
Thu Jun 09, 2016 10:03 am
Forum: Ventity
Topic: Use different table functions
Replies: 17
Views: 12453

Use different table functions

Hi I would like to have table functions that are different according to an attribute. In the example below the attribute is type (of widgets: round, square) and I would like to have to different table functions for each type (effect of X on Y). How can I do this? Is it possible in this structure, or...
by moudi
Thu Jun 02, 2016 7:28 am
Forum: Ventity
Topic: cohort modeling examples
Replies: 21
Views: 15491

Re: cohort modeling examples

Hi coming back to the issue of having different lookups for mortality rates for e.g. gender, region at the group level. I tried to move the lookup to the group level and got the following error message: Reference "Cohort" Missing condition for "CohortID" attribute. I have two que...
by moudi
Wed Jun 01, 2016 8:00 am
Forum: Ventity
Topic: Include external data source
Replies: 3
Views: 3770

Re: Include external data source

Hi

Yes, that is what I would like to have. I just upload the file.
by moudi
Tue May 31, 2016 12:01 pm
Forum: Ventity
Topic: Include external data source
Replies: 3
Views: 3770

Include external data source

Hi I have a question regarding use of an external data source. You will find attached a model where I used both the internal and the external data source, which give identical simulation results. My question goes towards the input of a table function. I used the format indicated in the table (X1,Y1)...
by moudi
Sat Apr 09, 2016 7:58 am
Forum: Ventity
Topic: A problem with attributes
Replies: 2
Views: 3510

Re: A problem with attributes

OK, I realise (assume?) that it is not possible to define an initial value for a flow rate. So, if I introduce an additional constant variable, it works...