We are trying to document a Health Assessment process. An assessment is considered complete when we have received, and committed to a database, the lab results from a blood draw, the biometric data from an examination and the answers from a questionnaire to be completed online OR on paper. The biometrics are recorded the same day as the blood draw. The employee can complete the questionnaire anytime in the process. We have no control over the length of time the lab results take to get back. We do not give the employee an end-date for completing the questionnaire. They can do it before or after the exam.
It sounds like a simpler version of the process described in this question, but I was hoping someone could point me to an online example; I'm having a hard time wrapping my head around it visually. If it matters, I'm using Adonis Community Edition.
I have made a few assumptions here, because your description of your process is not 100% clear to me. However, you might want to model something similar to this:
Related
I am new to OptPlanner but I have a reasonable understanding of constraint solving alebit somewhat dated.
I have a problem I want to model. On the one hand the National Grid have requirements to save electricity between defined time slots on specific days in specific locations (post codes). On the other individuals with static or mobile batteries charge their batteries at some point during a 24 hour cycle and have a need to get a specific amount of charge into those batteries. I need to model a set of constraints at the top (the grid) and the constraints at the bottom (the individuals) to ensure the individuals get what they need and the grid saves what it requires.
What model should I pick and why?
I am just starting this so I have not tried anything yet. I would prefer a Java/SpringBoot solution.
Many thanks for any help.
Steve T
First read the domain modeling guide in the docs to understand my answer below.
https://www.optaplanner.org/docs/optaplanner/latest/design-patterns/design-patterns.html#domainModelingGuide
I think the maintenance scheduling quickstart might be a good start. Code is here:
https://github.com/kiegroup/optaplanner-quickstarts/tree/stable/use-cases/maintenance-scheduling
Motivation: it sounds like there could be gaps between charging at the charging stations, so a chained through time model does not fit. You're not solving a VRP anyway. So I suspect a timegrain model it is, which is what the maintenance scheduling quickstart actually uses.
I'm playing the game Factorio, where you build a factory.
For the time being, I made a kind-of flowchart using libreoffice calc to calculate how many machines I need to produce a certain material.
Example image from the spreadsheet
Each block has a recipe saved (blue). This recipe includes what and how much it produces and needs and how much time it takes.
It takes the demand from the previous Block (yellow) and, using the recipe, calculates how many machines (green) it needs to fulfill this demand.
Based on the amount of machines it calculates its own demands (orange).
Then the following blocks do the same, until it has reached the last block.
Doing this in a spreadsheet does work, but it is quite a tedious task.
I showed this to my dad, as I'm quite proud of what I made, and he said that maybe a database would be more suitable.
I definitely see its advantages. For example I could easily summarize the final demands of raw resources, or the total power consumption, etc.
So I got myself Microsoft Access, and I'm pretty lost now. I know the basics of Databases and some SQL-Coding, but I'm not quite sure how I would make this.
My first attempt was:
one table for machines. It includes the machines production speed and other relevant stats.
one table for recipes. Each recipe clearly states what it produces, what it needs, the amount of each, and whether or not it is a basic. Basic means that it is a raw resources, i.e. the production chain would end with this.
one table for units. Each unit has a machine, a recipe and an amount. For example I would have one unit using basic assemblers to produce iron gears. This unit also says how many machines there are, so it needs more and produces more.
I did manage to make a query that calculates the total in and outputs of all units based on their machine and recipe, as well as a total energy consumption.
However, that is nowhere near the spreadsheet I made.
For now we can probably set the Graphical overlay aside, that would probably be quite a bit overkill. However what I do want to be able to make:
enter how much I want of a certain resources
based on that entry the database would create a new table. The first entry would be the unit that produces the requested resources. The second would fulfill the firsts demand, the third fulfills the seconds demand, and so on.
So in the end I would end up with a list of units that will produce my requested resource.
I hope someone can help me. There are programs out there that already do this kind of stuff, but I want to do this myself. If this is a problem that a database isn't suited for, then please tell me so.
Thanks for any help!
I'm working on the project where university course is represented as a to-do list, where:
course owner (teacher of the course) can add tasks (containing the URL to the resource needs to be learned and two datetime fields - when to start and when to complete the task)
course subscriber (student) can mark tasks as complete or not complete and their marks are saved individually for each account.
If student marks task as complete - his account + element he marked are shown in the course activity tab for teacher where he can:
initiate a conversation in JavaScript-based chat with him
evaluate the result of the conversation
What optimization algorithm you could recommend me to use for timetable rescheduling (changing datetime fields for to-do element if student procrastinates) here?
Actually, we can use the student activity on the resource + fact that he marked the task as complete + if he clicked or not on the URL placed on the to-do element leading to the external learning material (for example Google Book).
For example, are genetic algorithms suitable for this model and what pitfalls do they have: https://medium.com/#vijinimallawaarachchi/time-table-scheduling-2207ca593b4d ?
I'm not sure I completely understand your problem but it sounds like you have a feasible timetable to begin with and you just need to improve it.
If so genetic algorithms will work very well, but I think representing everything as binary 'chromosomes' like in the link might not be practical.
There are many other ways you can represent a timetable, such as in a 2D array, or giving an event a slot number.
You could look into algorithms such as Tabu search, Simulated Annealing and Great Deluge and Hill Climbing. They are all based on similar ideas but some work better with some problems than others. For example if you have a very rough search space simulated annealing won't be the best and Hill Climbing usually only finds a local optimum.
The general architecture of the algorithms mentioned above and many other genetic algorithms and Metaheuristics is: select a neighbouring solution using a move operator (e.g. swapping the time of one or two or three events or swapping the rooms of two events etc...), check the move doesn't violate any hard constraints, use an acceptance strategy such as, simulated annealing or Great Deluge, to determine if the move is accepted. If it is keep the solution and repeat the steps until the termination criterion is met. This can be max time, number of iterations reached or improving move hasn't been found in x number of iterations.
Whilst this is running keep a log of the 'best' solution so when the algorithm is terminated you have the best solution found. You can determine what is considered 'best' based on how many soft constraints the timetable violates
Hope this helps!
I'm a noob that is trying to make a good impression as I start my recent job. I am not very good at Excel, but I am trying to learn! This website has been a great resource, but I have a question.
We have a program that is like an active clock that ticks along and counts faults, rejections, product coming from an assembly line.
I would like to be able to create a graph that by the hour tells us the amounts for each so we can look at trends and set goals and stuff. My first thought was to find a macro that can take screen shots every hour, but I figure that would require manual entry for 24 times a day.
Has anyone have a better idea or know a macro I could use?
Thank you so much.
I'm just starting to take an interest in visualization and I'd like to know where I can get my hands on some data, preferably real world, to see what queries and graphics I can draw from it. Its more of a personal exercise to create some pretty looking representations of that data.
After seeing this I wondered where the data came from and what else could be done from Wikipedia. Is there anyway I can obtain data from say, wikipedia?
Also, could anyone recommend any good books? I don't trust the user reviews on the amazon website :-)
You can download the raw Wikipedia data from http://download.wikimedia.org. There are many different views of the data available. The English Wikipedia is by far the largest database, and there isn't a current full dump available, but one is in progress. It will probably take months to finish and be available for download.
The most recent one was 18 GB compressed, which uncompressed to something like 2.5 TB.
A fantastic book is The Visual Display of Quantitative Information by Edward Tufte.