Enthral | Enthral BBS
kandi X-RAY | Enthral Summary
kandi X-RAY | Enthral Summary
This is an Inital Import of EnthralBBS source. Data files needs to be cleaned-up and imported. Configuration systems needs to be rebuilt to support user installs on the latest version. Build instructions and requirements will follow.
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QUESTION
The problem:
I need to read a row of values from an excel spreadsheet into a parameter array and use these values to set the initial values of stocks.
The specifics:
a. I can successfully set the scalar parameters default values from excel using ExcelControlName.getCellNumericValue("ExcelSheetName", RowNumber, ColumnNumber).
b. Trying to set default values for array parameters with ExcelControlName.readHyperArray(DestinationArrayName,"ExcelSheetName",RowNumber, ColumnNumber, false) returns a "Cannot return a void result" error on build.
c. I can read the parameter arrays from a function called from the Agent actions "On startup:" section using ExcelControlName.readHyperArray(DestinationArrayName,"ExcelSheetName",RowNumber, ColumnNumber, false).
d. Stocks with their initial values set to the parameter array that was successfully loaded by the function are all zero even though the parameter array shows values (when run). Initial value: ParameterArrayName.
e. When I set the parameter array values through the value editor the stocks initialize correctly.
My suspicion:
I'm thinking that the issue has something to do with the internal timing within the entrails of the model generated by Anylogic such that the function to load the parameters is executed after the stocks get initial values - but that could just be the delirium caused by repeatedly smashing my forehead into the wall. But, if this is indeed the case, how can I sneak the function in earlier or, better yet, how would someone who actually knows what they're doing accomplish this?
What I'm trying to accomplish:
As a septuagenarian with lots of time on my hands and a vague recollection of dynamic modeling using Dynamo from a Systems Science program in the early seventies (and not used since), I thought I'd take a whack at age-based modeling of the COVID-19 pandemic. I wanted to see, among other things, whether establishing elder-prisons (in now vacant Club-Meds, Sandals... I'm sure) would be an economically advantageous strategy. Getting there requires dis-aggregating classic SIR approaches into age-specific chains of causality. So far, I'm at 27 age-specific parameters for eight age-groups and 24 scalar parameters. As much as I'd like to type and retype... all this data I'm really hoping there is a better way.
I must say that I am amazed at how far modeling has come in only 50 or so years and I am enthralled with Anylogic's application - even though it's a bit java-ish for me.
Thank you ever so much,
Carl Cottrell
...ANSWER
Answered 2020-Jun-02 at 00:18Not sure if I understand but here it goes:
I understand that you have the following structure:
and you want to initialize the stock as follows.
To do that, on the initial value of your parameter use a function that returns an HyperParameter:
the function getInitialValue should return an HyperParameter and I think this code should work for you (you have to choose RowNumber according to whatever is on your excelfile, MyDimension is the name of your dimension, and ExcelControlName is the excel in which you hold the values of the initial values of the stock)
QUESTION
I have a listview with over 400 components and I am wondering if there is an easier way to create descriptions for each individual element without having to create other classes. The only way I can think to make this process easier is to use webviews but I've looked around and people have already said on here it wouldn't work out very well.
Here is my code:
...ANSWER
Answered 2018-Oct-06 at 18:33There are a couple of potential answers.
I know you don't want to hear it - but in this case another class is really going to be your best friend, because you have a List which can be simply changed from type String to type Spell (which will take your description). But bear in mind, that only requires one Class, not a Class per element, so it's not much work!
Example:
QUESTION
Ideally I would want to define some temporary variables with let keyword to not repeat the same Contains method call, calculate some other stuff with those values and then return ValueTuple. Is that possible in one chained or query expression? So far I've managed it only with 2 expressions. Oh, the collection is IEnumerable, of course.
ANSWER
Answered 2018-Apr-03 at 14:41Unless I'm missing something: Yes - just project a NamedTuple instead of an Anonymous Object:
QUESTION
I'm trying to build a naive bayes based classifier for 1000 positive+negative labled IMDB reviews (txt_sentoken) and weka API for Java.
As I wasn't aware of StringToWordVector, which basically provides a BagOfWords model that reaches an 80% accuracy, so I did the vocabulary building and vector creation myself, with an accuracy of only 75% :(
Now I'm wondering why my solution is performing so much worse.
1) From my 2000 reviews, I build the BagOfWords:
...ANSWER
Answered 2017-Dec-28 at 07:18Reading through Weka's StringToWordVector documentation, there seem to be a couple of implementation details different than yours. Here are the top two, based on how likely they are to be the reason for the performance difference you see, in my opinion:
- It seems that by default, the resulting vector is boolean (i.e. noting the existence of a word, rather than number of occurrences)
- If the class attribute is set before vectorizing the text, a separate dictionary is built for each class, then all dictionaries are merged.
While any of them (or other, more minor differences) could be the culprit, my bet is on the second point.
The built-in class allows setting and unsetting each of these options; you could try re-running the 80% version using StringToWordVector with the -C option to use number of occurences rather then a boolean value, and with -O, to use a single dictionary across both classes.
This should allow you to verify whether any of these is indeed the culprit.
EDIT: Regarding the first point, i.e. counting occurences vs. noting word existence (also called Bernoulli and multinomial models), there were several academic papers at the 90s which looked into the differences, e.g. here and here. While usually the multinomial model works better, there are also opposite cases, depending on corpus and classification problem.
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