著者

鈴木 竣丸 宮崎 佳典

出版者

特定非営利活動法人 日本e-Learning学会

雑誌

日本e-Learning学会誌 (ISSN:13490192)

巻号頁・発行日

vol.19, pp.53-61, 2019-10-28 (Released:2019-10-28)

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For the practice of an extensive reading of English texts, it is thought that keeping providing texts with learners' suitable levels seems desirable. Because the difficulty of texts is more or less influenced by the percentage of unknown words in them, recording the status of "known / unknown" of words for individual learners is one of the key issues. On the other hand, it is obviously burdensome and time-consuming to record the information of a large number of English words. In this paper, the authors have devised an algorithm to estimate the "known / unknown" status of words in SVL12000 wordlist for individual learners. A simulation was also conducted using the real data for the comparison with other algorithms. The result shows that it worked out well for some learners though there still exist drawbacks of the algorithm.