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Modelling language acquisition at busuu
Published on Apr 08, 2019119 Views
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Chapter list
Modelling memory with Busuu’s Vocab Trainer00:00
Intro/Agenda00:15
The global language learning market01:05
Digital language learning to explode in the $54bn market01:08
Busuu has >90 million users growing at 40,000 users per day01:48
We have a freemium business model with attractive Premium benefits02:47
Our history: part 103:23
Our history: part 203:26
Busuu product and pedagogy05:09
Our vision is to break down language barriers05:13
Our mission06:14
Busuu combines AI-powered courses with instant feedback from native & advanced speakers08:03
We are one of the most complete language learning apps in the market09:52
Our methodology11:14
Example11:54
We have expanded our products into machine learning, virtual reality and bots12:38
Academic and research partnerships13:04
Data Science13:24
Data science at busuu13:32
Study plan15:00
User engagement15:39
User engagement: effect of motivation16:35
Study plan impact on engagement17:41
Modelling vocabulary acquisition18:34
Learning vocabulary with busuu: part 119:19
Learning vocabulary with busuu: part 220:06
Reviewing vocabulary with busuu20:46
Measuring strength22:05
Review exercises: Design principles25:13
Review exercises v1.0: part 126:05
Review exercises v1.0: part 226:54
Review exercises v1.0: part 327:32
Review exercises v1.0: part 427:46
Review exercises v1.0: part 629:06
Review exercises v1.0: part 530:03
Review exercises v1.0: part 730:24
Flashcard experiment - what do users say they know?30:40
Flashcard experiment: part 131:20
Flashcard experiment: part 232:38
Flashcard experiment: part 333:49
Looking ahead: stages of knowing a word33:57
Modelling strength decay - Spaced repetition34:52
Busuu vocab trainer 1.035:31
Measuring strength36:39
Busuu vocab trainer 2.036:50
Difficulty by language pair38:55
Busuu vocab trainer 2.041:13
DS Roadmap42:35
Q&A44:32