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the big format

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This commit is contained in:
Joshua Burman
2022-02-10 20:29:50 -05:00
parent 19a37ab33a
commit deb6b9014e
25 changed files with 682 additions and 466 deletions
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30
app/lib/irt/models/three_parameter_logistic.py
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@ -1,16 +1,18 @@
class ThreeParameterLogistic:
def __init__(self, model_params, kwargs):
self.model_params = model_params
# check if exists, if not error out
self.b_param = kwargs['b_param']
self.e = 2.71828
self.theta = kwargs['theta']
# contains the primary 3pl function, determining the probably of an inidividual
# that an individual at a certain theta would get a particular question correct
# detailed further on page 161, equation 1 here:
# https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5978482/pdf/10.1177_0146621615613308.pdf
def result(self):
a = self.model_params.a_param
c = self.model_params.c_param
return c + (1 - c) * (1 / (1 + self.e**(-a * (self.theta - self.b_param))))
def __init__(self, model_params, kwargs):
self.model_params = model_params
# check if exists, if not error out
self.b_param = kwargs['b_param']
self.e = 2.71828
self.theta = kwargs['theta']
# contains the primary 3pl function, determining the probably of an inidividual
# that an individual at a certain theta would get a particular question correct
# detailed further on page 161, equation 1 here:
# https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5978482/pdf/10.1177_0146621615613308.pdf
def result(self):
a = self.model_params.a_param
c = self.model_params.c_param
return c + (1 - c) * (1 / (1 + self.e**(-a *
(self.theta - self.b_param))))