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psychometrics package, including MIRT(multidimension item response theory), IRT(item response theory),GRM(grade response theory),CAT(computerized adaptive testing), CDM(cognitive diagnostic model), FA(factor analysis), SEM(Structural Equation Modeling) .

License: MIT License

Python 97.54% Makefile 2.46%
psychometrics item-response-theory factor-analysis structural-equation-modeling computerized-adaptive-testing cognitive-diagnostic-models classical-test-theory psychology survey questionnaire

pypsy's Issues

slop, thresholds,What do they mean?

  • pypsy version:
  • Python version:
  • Operating System:

Description

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Tell us what happened, what went wrong, and what you expected to happen.

What I Did

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If there was a crash, please include the traceback here.

关于DINA的EM算法传入参数问题

老师您好,我在看了您的demo后使用自己的数据去做实验,但是报错:ConvergenceError: no Convergence
image
我使用的数据Q是3个属性28个项目的numpy矩阵,score.values是2922个样本28项目的作答数据
image

使用您demo里随机生成的attrs就没问题,使用我自己的数据就会报错,请问是什么原因呢?

ImportError: cannot import name 'Irt'

I do as the demo,but get the error
Type "help", "copyright", "credits" or "license" for more information.

from future import print_function, division, unicode_literals
from psy import Irt, data
Traceback (most recent call last):
File "", line 1, in
ImportError: cannot import name 'Irt'

请求帮助与合作

您好,我寻找了很久的IRT包,惊讶的发现是**人写的。我想把IRT应用到教育测评领域,希望能得到您的帮助与支持!
我的微信:zcj1987 电话:18096018789 希望能和您深度交流与合作。
盼回复!

about 2pl irt demo return value ,What do they mean?

  • pypsy version:
  • Python version:
  • Operating System:

Description

Describe what you were trying to get done.
Tell us what happened, what went wrong, and what you expected to happen.

What I Did

Paste the command(s) you ran and the output.
If there was a crash, please include the traceback here.

how to use the pypsy?

您好,看到您写的这个irt算法,想使用下,可是不知道从哪里下手,不清楚源数据是哪些,都是什么格式,输出数据是什么,是什么格式,希望您有时间可以帮助下,谢谢。

有关MCMC_dina模型的问题

老师您好,最近在使用您的pypsy包做实验,目前有两个问题想请教一下:
1、请问老师是如何实现程序占用cpu多核?我自己写认知诊断模型时只能占用CPU的单核导致速度太慢。
2、我在测试MCMC方法的DINA模型时会出现当数据规模增长到一定程度,执行时间从几十秒骤增到几千秒的问题,这是因为内存不够导致的嘛(因为我发现在内存的占用会随着训练数据集规模的增大而增大)?

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