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douglasrizzo / catsim

Computerized Adaptive Testing Simulator
GNU Lesser General Public License v3.0
124 stars 35 forks source link

No tutorial in the documentation #20

Closed KayvanShah1 closed 4 years ago

KayvanShah1 commented 4 years ago

It is that we can understand the base methods and its uses but seems unaware about its usage.

A python notebook where you can view how one one use it on small exaple of student id and question response dataset would become greatly useful and help tracking further errors if encountered.

douglasrizzo commented 4 years ago

Hi there. There are examples available in the documentation. In any case, I'll see if I can provide a Jupyter Notebook in the next few days.

douglasrizzo commented 4 years ago

See if this helps: https://douglasrizzo.com.br/catsim/examples.html

There is a link to a Colab Notebook too.

KayvanShah1 commented 4 years ago

I actually have data that works fine with implementation of Rasch model.

Screenshot (5)

I want to implement IRT 4 parameter model for better results but unable to do so. Getting messed up by the theory and not able to understand how to use catsim with it

When adding new input response with some NAs the model doesn't work in any of these implementations.

I would be grateful if you could help me out with development of clear understanding of concepts.

Thank You
douglasrizzo commented 4 years ago

This package does not estimate item parameters. You should do it with an external program.

KayvanShah1 commented 4 years ago

Thank you for your guidance.

douglasrizzo commented 4 years ago

catsim is specialized in computerized adaptive tests, it doesn't delve into item parameter estimation. My suggestion, if you want to apply other logistic models to your data, is to try using the mirt package in the R language, which is free and quite simple to use. Then, if you're still interested in using those parameters in a CAT, you can come back to catsim and use them here.

Item parameter estimation is something I have been interested in adding to catsim for quite a while, but I also don't have the expertise for that right now.

onlyfew commented 1 year ago

See if this helps: https://douglasrizzo.com.br/catsim/examples.html看看这是否有帮助：https://douglasrizzo.com.br/catsim/examples.html

There is a link to a Colab Notebook too.还有 Colab Notebook 的链接。

404 now

douglasrizzo commented 1 year ago

Try the Colab notebook in the README, I've updated the link.