How AI Remembers: HyperEGO's Long-Term Memory Architecture
The most important thing in AI chat services is 'memory.' Let's explore how HyperEGO maintains conversation context and expands stories.
How AI Remembers: HyperEGO's Long-Term Memory Architecture
When building an AI companion service, the hardest problem is memory. When chatting with ChatGPT or Claude, every time you start a new session, it forgets previous conversations.
Why Is Memory Important?
User: "I have a cat named Nabi"
AI: "So cute! What do you feed her?"
... (next day)
User: "How's Nabi doing?"
AI: "Who's Nabi?" ❌
This kind of experience makes building relationships impossible. For an AI to feel like a true companion, it needs to remember the user.
HyperEGO's 5 Types of Memory
| Type | Description | Example |
|---|---|---|
| Fact | Objective facts | "Nabi is a Russian Blue" |
| Preference | Preferences | "Likes spicy food" |
| Event | Events | "Changed jobs last week" |
| Emotion | Emotional state | "Seemed tired lately" |
| Relationship | Relationship info | "Best friend Minsu" |
Memories are retrieved through semantic search. When you mention "cat," the "Nabi" memory automatically connects.
Story Expansion System
Memory alone isn't enough. Another problem with AI companion services is repetitiveness. If the same conversation patterns keep repeating, users quickly get bored.
HyperEGO solves this problem with StoryletGraph.
Core Concepts
- 5 Relationship Stages: Stranger → Acquaintance → Friend → Close Friend → Romantic Partner
- 6 Emotion Axes: Trust, Affection, Disappointment, Jealousy, Comfort, Excitement
- Storylet: Scenario fragments that match relationship and emotion conditions
For example, the "sharing an umbrella on a rainy day" scenario only gets selected when Friend stage or above + Affection 45 or higher. If conditions aren't met, a different scenario appears.
The Principle of Infinite Expansion
100 storylets × 5 relationship stages × emotion combinations = thousands of scenarios
A cooldown system prevents the same story from appearing consecutively. This enables conversations that are fresh every time yet contextually appropriate.
If you'd like to learn more about HyperEGO, check out our product page.
If you have questions about our technology and products, reach out to dev@ooi.chat!