knowledge_assessment:q-matrix
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knowledge_assessment:q-matrix [2012/07/11 10:31] jpetrovic [How does a q-matrix look like?] |
knowledge_assessment:q-matrix [2012/07/11 10:53] jpetrovic |
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| ==== What can I do with a q-matrix? ==== | ==== What can I do with a q-matrix? ==== | ||
| + | Q-matrix can be used for understanding students' performance. Due to various knowledge and assessment characteristics, students' responses rarely match //ideal responses// generated from the matrix. Still, by assigning the closest //ideal response// to a student's response vector, it can be assumed which concepts the student does, and which he does not know. This information can be used in order to direct him in further learning. | ||
| ==== How do I create a q-matrx? ==== | ==== How do I create a q-matrx? ==== | ||
| + | A q-matrix can be created in two ways: | ||
| + | * by having the domain experts analyze assessment items (questions) and define the concept corresponding to each item and thereby construct the q-matrix. in this case all the concepts in the q-matrix are exactly defined and labeled as elements of the domain. Q_matrix and student's knowledge is therefore easily interpretable. | ||
| + | * by automatically extracting the matrix directly from obtaines students' performance on the test items. in this case, the number of concepts is determined by the algorithm (and is usually much smaller than the number of assessment items) and their labels are automatically assigned (and do not reffer to exact domain concepts). | ||
| * "//method, which examines the inputs of many students to automatically extract relationships between questions and underlying concepts, and then uses those relationships in diagnosing and correcting student misconceptions.//" | * "//method, which examines the inputs of many students to automatically extract relationships between questions and underlying concepts, and then uses those relationships in diagnosing and correcting student misconceptions.//" | ||
knowledge_assessment/q-matrix.txt ยท Last modified: 2023/06/19 18:03 (external edit)
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