Syllabus Mining for Analysis of Searchable Information
Writing an effective syllabus is critically important for instructors to provide effective education at universities. However, little is known about how to create a well-written syllabus. It is necessary to elucidate what kind of information must be included in a syllabus. To achieve this goal, we focus on the searchable information in syllabi and analyze an actual syllabus collection that includes 6,493 syllabus documents of a national university in Japan. First, we investigate syllabus classification and syllabus search by using established text mining methods and an information retrieval method. The results of our experiments demonstrate that (i) knowledge discovery from syllabus documents is a challenging and non-trivial task, and (ii) just adding one particular word can already increase the searchability in syllabus search. Next, we investigate methods that provide word suggestions using deep learning approaches and large text corpora. In this experiment, we used a bibliographic database of university libraries in Japan, which contains 3,990,646 bibliographic entries, and a version of Japanese Wikipedia, which contains 2,351,545 articles. The results indicate that (iii) a vocabulary from a bibliographic database of university libraries is effective to ameliorate the efficacy measured by the mean reciprocal rank, and (iv) a wide range of vocabulary is essential in improving the recall in word suggestions.
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