@techreport{oai:ipsj.ixsq.nii.ac.jp:00204196,
 author = {稲子, 翔太 and 中野, 裕司 and 杉谷, 賢一 and 久保田, 真一郎 and Shota, Inago and Hiroshi, Nakano and Kenichi, Sugitani and Shin-ichiro, Kubota},
 issue = {9},
 month = {Mar},
 note = {我々はブラウザの拡張機能と記録サーバを組み合わせ，学習時に閲覧した Web ページから得た頻出語等を学習履歴として記録するシステムを開発してきた．しかし，集めた頻出単語等は，ダッシュボード上にキーワードとして羅列されるだけにとどまっており，自己学習の振り返りに効果的な可視化ではなかった．自己学習の振り返りにおける効果的な可視化として，知識の変化を自己認識できることが望ましいと考え，本研究ではブラウザの拡張機能により収集した Web ページ内の文章を分析し，Wikipedia の文章をもとにした共起グラフを表示し，キーワード同士の関連性や知識の変化を表現することで，学習者にとって効果的な学習履歴の可視化を目指した．, In our past research, we had developed a system to store learning records, consisting of frequent words extracted from the web pages, which a learner viewed in learning process. The system had been constructed from a browser extension, which sends data of the web pages to a record server, and a record server, which records the frequent words. However, it had not been effective for learners to visualize a list of the frequent words in order to reflect on their self-learning. It was considered to be important that learners recognize differences between past and current knowledge by themselves. This research showed our consideration to visualize their learning records for each learner effectively. With presenting co-occurrence graphs on the basis of data in the Wikipedia, We had developed a system to visualize relationships between keywords, and differences between past and current knowledge.},
 title = {自己学習を振り返るための共起グラフによる学習履歴の可視化},
 year = {2020}
}