2025 年 33 巻 p. 790-800
I have been developing and improving a pictograph (emoji) chat that allows people from other countries to communicate in simple conversations using only emojis. As a result of numerous experiments, the communication abilities of the emoji chat in simple conversations with people from other countries and the functions necessary to support it have become clear and are described as follows: (1) In a chat method in which one line of emojis is sent alternately, the other person may understand 90% of the messages in a simple conversation such as icebreaking, both face to face and remotely, using 500 types of emojis. The same chat method, using emoji fixed phrases from a cooperative online role-playing game (RPG), achieved a similar level of understanding (90%). (2) For both face-to-face and remote conversations, when the subject is uniquely established, the upper limit of this method is close to 2.4 utterances per minute on average. (3) In the case of icebreaking conversations, appropriate categories should be created. These include subjects, 5W1H, time relationships (e.g., past, present, and future), weather, facial expressions (e.g., smiley faces), verbs, adjectives, a right-pointing arrow, places and vehicles, nouns (e.g., everyday objects, animals, food, and games), alphabets, numbers, marks, and time. Moreover, emojis that can be understood by people from other countries are necessary. (4) In terms of support functions, the history tab and quotation function are used approximately 30% of the time, and fixed phrases are used 74% of the time. As the number of emojis per minute in the system without these support functions is significantly lower (approximately half) than that in the system with support functions, it can be assumed that these support functions work effectively.
