Ventana software support forum

You could cite: Powell, M. J. D. (1964). "An efficient method for finding the minimum of a function of several variables without calculating derivatives". Computer Journal. 7 (2): 155–162. doi:10.1093/comjnl/7.2.155. Press, WH; Teukolsky, SA; Vetterling, WT; Flannery, BP (2007). "Section 10.7. Direc...

The scale parameter determines the mean (assuming shift=0 and there is no truncation), and therefore is the inverse of the lambda parameter typically described for the distribution. The standard deviation equals the mean (variance = mean^2). So, you could use shift=0 and scale=mean of your data. See...

I think it's a terminology gap. If Microsoft uses "workload" to mean which language package is active in Viz Studio, then yes, C++ is what you want.

Depends what you mean by "connect." There are multiple ways to use data in Vensim, and many online climate sources. If you want to scrape data off the web, you'll probably have to write some custom code, but you'd have to tell us more about your use case for advice about how to get it into Vensim. I...

Which algorithm are you using? Powell or MCMC?

Pasting into Paint may be your problem. That throws away the vector graphic and gives you some kind of bitmap. Paste into Word, Powerpoint, or a vector drawing program.

Here are a couple variations. In the "PL1" version, I made the process list approach a little fancier.

In the "2" version, I switched to a linked list.

I'll take a look. I'm not sure about "more elegant" but you could avoid the process list by making the stack into a linked list by adding a "next in stack" attribute to each stack item. On the other hand, the process list is nice because you could change the priority for selecting the next item dyna...

It's an infinite order delay, which means that effectively it's an aging chain where the number of stocks is equal to delay_duration/TIME_STEP, and each stock has time constant = TIME_STEP.

Seems like more of a discrete event simulation problem.

You could assign each team member an integer time zone number, and search for viable times that are within a certain window overlap from the zone number, modulo 24.

It's hard to say more without knowing more about the problem statement.

Possibly - we'll check it out.

As a workaround, you could move the numbers over to a regular entity and aggregate there.

What do you want to do with the time zone? How about using an integer from 1 to 24?

There are many that implement large portions of this. Here's one example:
https://scholar.harvard.edu/jalali/publ ... e-petition
There's a version in the SD conference proceedings that includes the model.

You can use the tooltip field. Not sure what the status is, but here's the latest from the dev team: The current tooltip implementation goes as follows : 1) You can put any text you want 2) some html formatting applies, like <br> for new line and <b></b> for bold 3) variables are introduced using cu...

If most of your values are 0, you can put 0 in the equation,
const[x,y,z] = 0

Then use a .cin file to override the few nonzero values:
const[b,y2,z1] = 3.141

In both of your screenshots, you have 2 dimensions, but only 1 row of data. That will never work. If you have 1 dimension: 0, 0, 0 2 dimensions: 0, 0, 0; 1, 1, 1; For 3 or more dimensions, you can use element-by-element definitions. For example, if you have: X : a, b Y : y1,y2 Z : z1,z2 you can defi...

It's a basemap - it'll show resolution-appropriate material scaled to the rest of your data. But if you use it too much, it'll probably get shut down by the host. It's a loose end we're working on.

You can disable it via the Layer menu.

There is a way to do this, but it's a little indirect. Create an entitytype A containing just the initialization data, then a paired entitytype B with the dynamics. Then the A entities serve as the stack, and you can use the next available A to create a B via an action. This is a little wasteful, be...

For completeness, here's another version, implemented the other way:
- Market is not a singleton
- Fleet has a compound key (market|size|type)

Another possibility is to create a reporting variable that reflects the stock+current flow.

This appears to be in the wxwidgets lib. I'm logging tickets for all these - keep the comments coming.

What you need is a discrete event that intermittently drains/replaces the part. This might be helpful: https://vensim.com/discrete-stochastic/

You could define a variable called "kilos per mega" with units k*k/M and use that to make the conversion.

1. I could have left the FleetID alone, in which case the Cohort could look up Size and Type via a reference to the Fleet to which it belongs. Either way, the Cohort needs to have attributes storing the key for the Fleet. 2. True - this is often the case. 3. You always need a reference to access inf...

In the model above, you may discover that [s3] can sustain a fairly large positive bias. I think that's because there's a big jump in marginal cost to the next-cheapest producer [s6]. So, s3 could bid just below s6's marginal cost, rather than at its own marginal cost. That wouldn't hold up in a mar...