def __init__(self): dataset = data.synthetic_item_response_theory() del dataset['test_student_ids'] del dataset['test_question_ids'] del dataset['test_correct'] super(SyntheticItemResponseTheory, self).__init__(name='synthetic_item_response_theory', pretty_name='Synthetic Item-Response Theory', **dataset)
def testSyntheticItemResponseTheory(self): num_train_points = int(0.75 * 30012) num_test_points = 30012 - num_train_points dataset = data.synthetic_item_response_theory(train_fraction=0.75) self.assertEqual((num_train_points,), dataset['train_student_ids'].shape) self.assertEqual((num_train_points,), dataset['train_question_ids'].shape) self.assertEqual((num_train_points,), dataset['train_correct'].shape) self.assertEqual((num_test_points,), dataset['test_student_ids'].shape) self.assertEqual((num_test_points,), dataset['test_question_ids'].shape) self.assertEqual((num_test_points,), dataset['test_correct'].shape)
def synthetic_item_response_theory(): """One-parameter logistic item-response theory (IRT) model. This uses a dataset sampled from the prior. This dataset is a simulation of 400 students each answering a subset of 100 unique questions, with a total of 30012 questions answered. Returns: target: StanModel. """ dataset = data.synthetic_item_response_theory() del dataset['test_student_ids'] del dataset['test_question_ids'] del dataset['test_correct'] return item_response_theory.item_response_theory(**dataset)