基于词频和遗忘曲线的“云服务”词汇学习系统

A “Cloud” Vocabulary Learning System Based on Word Frequency Lists and Ebbinghaus' Curve of Forgetting

本文提出了一种将学习者的词汇学习目标和现有词汇能力自动适配的"云服务"英语词汇学习系统。系统按单词在英语中出现的频率定级,实时监控学习者的实际词汇能力,根据艾宾浩斯的遗忘曲线在关键遗忘节点上重复播放难度合适的单词,将临时记忆巩固为长期记忆。学习过程完全个性化,词汇难度升级循序渐进,家长和教师可以监控学习过程和成绩,从而达到很高的学习效率。

This paper proposes an interactive English vocabulary learning system that is geared to individual student＇ s vo- cabulary learning objectives and vocabulary ability. The system uses a word rank in the word frequency list as its absolute difficulty level-a higher rank in the list denotes a more common word and therefore should be learned first. The system lowers or raises the difficulty level of the vocabulary items displayed according to real-time assessment of a student＇ s vocab- ulary ability. Temporarily mastered words re-appear according to Ebbinghaus＇ forgetting curve so that the learner is promp- ted whenever s/he is about to forget the word. A prototype of the system is nicknamed ＂the vocabulary treadmill＂ and hos- ted on a website. It can be also be implemented on PDAs, cell phones and tablet PCs. The system has the benefits of a natural vocabulary learning progression, high efficiency, individualized learning sequences, and the capability for parents and teachers to monitor student learning activities and progress.