**AI-generated instructors in online lessons are ant pear docomo gacco and data grid AI video creation service to investigate the impact on students**
Datamix Co., Ltd., which operates training and consulting businesses related to big data, artificial intelligence, and machine learning, docomo gacco Co., Ltd. (operates the university course “gacco”), and Co., Ltd., which promotes industrial utilization of digital data. On June 27, 2022, the three data grid companies will use AI-based learning video content provided by the free online course platform “gacco” to investigate the impact of AI-generated instructor videos on viewers. Announced the results.
According to this, there is no big difference in the attendance status of the instructor video generated by AI and the instructor video by humans, and the correct answer rate of the test after watching the video, and about 60% of the participants about the audio and video generated by AI. It turned out that I felt it was natural.
MOOC course utilizing AI-based human video generation and voice synthesis technology
The MOOC (Massive Open Online Courses) course using AI-generated instructor videos (AI videos) is based on text data using NTT Technocross’s voice synthesis service ” FutureVoice Crayon “. Generate audio data in the course. By inputting text data into “Future Voice Crayon”, it is possible to generate natural voice data that is comparable to human voice. Next, using the data grid AI-based human video generation technology, based on the audio data and the instructor video for a few minutes, the movement of the mouth is matched to the audio, and a long lecture video as if the instructor himself is speaking is created. Automatically generated. This technology is realized by GAN (Generative Adversarial Network), which can finally generate highly accurate data by learning so that two networks compete with each other.
About the contents of the survey
There are two groups: (i) a group that watches instructor videos (AI videos) generated by AI at random so that the average age and standard deviation are close to each other, and (ii) a group that watches instructor videos (real videos) by humans. We divided them into groups and asked them to watch the videos of the courses “Business etiquette” and “Intercultural communication” provided by docomo gacco, and compared and analyzed the results of the courses.
In both AI videos and real videos, the percentage of users who have completed viewing tends to decrease as the video progresses, but when comparing AI videos and real videos, the percentage of users who have completed viewing may be higher in AI videos. I understood it.
In addition, when the number of times the video was skipped (seek) was made into a histogram and the ratio was confirmed, the AI â??â??video skipped (when comparing the AI â??â??video and the real video in both “business etiquette” and “intercultural communication” videos ( It can be seen that the number of times of seek) is high, and it can be seen that the user is watching without skipping (seek).
When the average value and standard deviation were calculated for the subject submitters of each video, it was found that the group who watched the real video slightly in “Business etiquette” was higher, but there was no big difference.
In the questionnaire conducted after learning, 60% of the groups who watched AI videos answered that they were “very natural” and “well natural”.
Future outlook
“Docomo gacco” has been providing a learning video creation service using AI since 2020, but some users said that they were worried about the learning effect, viewing, and learning. In this survey, by actually watching AI videos and real videos and comparing them, it was found that AI videos have a higher viewing completion rate and have almost no effect on learning. In addition, while the questionnaire after learning found room for improvement such as mechanical impressions and discomfort of video and audio, the creation of videos by AI can be expected to suppress the variation in the comprehensibility of explanations by the instructor. , Video production can be done efficiently while reducing the operation of the instructor. In the future, it will continue to conduct research and analysis on AI videos, and will work to improve services so that users can take each course more safely and effectively.
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