modeling

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Django foreign keys - one class has the same relationship to multiple other classes

I have a model with three classes: PendingAuthorisation, Director, and Member. Director and Member instances are considered inactive if they have a corresponding PendingAuthorisation.[详细]

2023-04-07 06:02 分类：问答
How create dialects with XText

The project I\'m working on has a custom file format, with a pre-defined structure. The structure is really simple and generic (and I cannot change it): it is composed by (nested) commands and typed p[详细]

2023-04-05 05:00 分类：问答
Specifying attribute types in Papyrus

I recently installed Papyrus and attempted to follow the tutorial for creating a model and generating Java code off it.[详细]

2023-04-02 04:44 分类：问答
Netlogo Vs Greenfoot

I am looking for a software tool that will introduce me to the b开发者_StackOverflow中文版asics of modeling and simulation. I have a good working knowldge of C++ and Java.[详细]

2023-03-28 20:24 分类：问答
Entity Framework, Code First modeling and a cyclical reference

I\'ve spend several days now, trying to solve this problem. While making a simple project to exemplify my problem, I stumbled upon a possible solution. So, this is sort of a double question.[详细]

2023-03-26 11:04 分类：问答
Rails modeling - give user choice between two related models (sti) in the same form

Here are my models: class BillingProfile < ActiveRecord::Base belongs_to :student attr_accessible :cost[详细]

2023-03-25 17:49 分类：问答
Step-by-step formula based _R_ codes for GLM and GLMM

I know how to fit generalized linear models (GLMs) and generalized linear mixed models (GLMMs) with glm and glmer from lme4 package in R. Being a student of statistics, I\'m interested in learning how[详细]

2023-03-25 11:40 分类：问答
Modeller script build_profile.py doesnt get the correct output

9 for protein structure modelling, by the way it runs on python2.3, i made the installation previously, when i run the script the output isnt rigth it should be an aligment of all the protein sequence[详细]

2023-03-25 04:50 分类：问答
VisualStudio Architecture Modelling - how to export as an image?

I\'ve generated a very large model that I need to put in a Technical Document. It wont fit its to big, over 8000 nodes and over 32000 links.[详细]

2023-03-24 15:07 分类：问答
What are the key components and functions for standard model objects in R?

I have implemented a new statistical model in R and it works in my sandbox, but I would like to make it more standard.A good comparison is lm(), where I can take a model object and:[详细]

2023-03-23 21:11 分类：问答