A new AI diary system called ‘Persode’ developed by a joint research team from Sangmyung University, Peaknic Co., and Taejae University is gaining attention. This system was developed specifically for Generation Alpha and Generation Z, who dislike traditional text-based diary writing. Recognizing that the young digital natives want immediate feedback and visual entertainment, the research team created a personalized diary service where AI can converse and even draw illustrations.
AI That Selects and Stores Only Important Memories Using Forgetting Principles
According to the research paper, Persode’s core technology utilizes Ebbinghaus’ Forgetting Curve theory in its memory system. This applies the pattern of human memory loss over time to AI. The system references short-term memories within 6 days, and for long-term memory, it evaluates based on emotional intensity, recall frequency, and contextual relevance to maintain important events while optimizing computational efficiency.
The research team employed a memory strength scoring mechanism based on Craik and Lockhart’s Levels of Processing Theory. This approach is designed to remember emotionally significant or contextually rich experiences for longer periods. For example, when a user shares a story about an enjoyable party, the AI recalls similar pleasant memories like past graduation ceremonies and connects them to the conversation. This enables deep, experientially connected conversations rather than simple exchanges.
Fully Customizable from Your Appearance to AI Personality
When first using Persode, users go through a detailed personal setup process. Users can select whether they wear glasses, favorite fashion styles, background atmosphere, and more to create their unique character. More uniquely, users can directly determine the AI chatbot’s personality. They can choose styles like “empathetic and supportive” or “friendly” tone, creating a conversation partner that suits them.
All this setup information is stored in a database and utilized during every conversation. When the AI creates illustrations, it also reflects the user’s configured appearance and style to produce more personal and consistent results. This aims to create a personal space that reflects the user’s identity rather than just being a functional tool.
Natural Conversations That Continue by Remembering Past Interactions
The system’s conversation function operates by retrieving and utilizing past conversation content. When users engage in conversation, the AI automatically extracts important events, emotions, time, and related keywords from the content. For example, from “I had dinner with family and it was really enjoyable,” it identifies elements like “family,” “dinner,” and “pleasant atmosphere.”
Based on this information, the AI finds similar past experiences and connects them to the conversation. When a user shares a story about an enjoyable family gathering, it recalls previous conversations about graduations or birthday parties and responds with something like “You were similarly happy at your graduation ceremony back then.” This enables naturally continuing conversations rather than starting fresh each time.
Automatic Diary System That Converts Conversations into Text and Illustrations
Persode’s most unique feature is automatically converting conversation content into diaries and illustrations. The diary portion is written by GPT-4o AI, which analyzes conversation content and creates text reflecting the user’s emotions and preferences. It takes about 3 seconds on average to complete, boasting fast response times.
The illustrations are created by DALL-E 3 AI. Rather than drawing random pictures, it combines emotional and event information extracted from conversations with user-configured preferences to create customized images. For example, if a teenager with dyed yellow hair talks about spending all their allowance and getting scolded by their mother, the AI reflects both the emotional situation and physical characteristics to draw a picture showing regret. This creates personal diaries that harmoniously combine text and images.
FAQ (※ This FAQ was created by our publication based on the report.)
Q: How is Persode different from existing diary apps?
A: While existing diary apps require users to write directly, Persode automatically creates diaries and illustrations just by conversing with AI. It also enables continuous conversations by remembering past interactions and provides visual content tailored to personal preferences, which are key differentiators.
Q: Why do young generations dislike traditional diary writing?
A: Generation Alpha and Generation Z, accustomed to smartphones and social media, want immediate feedback and visual entertainment. Traditional text-only diaries are boring and don’t provide instant responses, making them easy to lose interest in.
Q: Is personal information safely protected?
A: While the research paper doesn’t detail specific personal information protection measures, it states that user configuration information and conversation content are stored in databases to provide personalized services. Appropriate security measures would be necessary for actual service deployment.
The original paper cited in this article can be found on arXiv.
Paper Title: Persode: Personalized Visual Journaling with Episodic Memory-Aware AI Agent
