LANCUN
§ 01 · CORE TECH
Long-term relationship layer

Multi-Layer
Memory Engine

Short · long · structured · unified memory stack

Give agents searchable, injectable, sharable long-term memory — not chat-log recall, but devices that hold long-term relationships, a stable personality, and the ability to keep growing.

3 layers
Memory layers
1 year+
Retention
2 orders
Capability lift
Vector + struct
Retrieval
§ 02 · MEMORY ARCHITECTURE

Episodic + Structured memory · Vector retrieval

Three layers in concert — durable memory, stable persona, and high-quality decision-making.

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Dual memory stores
Memory pipeline
Dual bypass mechanisms
Episodic memory
On-demand retrieval
Zc_episodic_memory
content · importance · embedding
Structured memory
Direct injection
Zc_user_profile
nickname · key_preferences
User input
Embedding model
bge-small-zh · 512 dims
Vector retrieval
pgvector · cosine similarity
Top-K relevant memories
Fallback strategy
When embedding is unavailable
fall back to importance DESC
EmoMonte middle layer
Joint emotion + memory retrieval
Episodic · on-demand retrieval

Stores the content, context, and importance score of every interaction. Each memory carries an embedding vector and is retrieved by semantic similarity on demand.

Zc_episodic_memory · content · importance · embedding
Structured · direct injection

User profile, core preferences, persona attributes are stored as structured fields and injected straight into the prompt context every turn.

Zc_user_profile · nickname · key_preferences
Vector · efficient recall

pgvector + cosine similarity pulls Top-K most-relevant items from large memory pools. When embedding is unavailable, the system falls back automatically.

pgvector · cosine_sim · top-K · fallback by importance DESC
§ 03 · VALUE PROPOSITION

Three value pillars of the memory engine

Stronger multi-agent collaboration

Individual agents own long-term memory; swarm agents share a co-operative memory pool. Agents exchange context through a unified memory stack — low-latency, scalable, governable.

Longer-horizon task planning

Memory isn't just “remembering” — it's the foundation of planning. AI can build cross-day, cross-week, cross-month plans from long-term memory, giving task reasoning a real time dimension.

More natural role consistency

Personality + episodic memory + preference profile together hold a stable persona. The AI no longer “becomes someone else” when the conversation changes, or “contradicts yesterday”.

LANCUN · 1 year+ long-term memory
VS
Competitors rotate within 2,000 tokens
§ 04 · APPLICATIONS

Broad applicability

The same architecture extends to AI homes, smart cities, healthcare and more.

AI companion toys
Remembers the child's name, hobbies and past topics — the relationship doesn't reset on power-cycle.
AI smart home
Family profile + habit memory + scene preferences — appliances coordinate around the person, not the API.
AI elderly companion
Long-term memory eases the loneliness of patients with cognitive decline; a stable persona provides ongoing reassurance.
AI tutoring companion
Remembers every student's learning path and weak points — personalised instruction actually lands.
Smart city / healthcare
Swarm intelligence shares co-operative memory across devices and scenes for a unified service experience.

Long-term relationships · stable persona · continuous growth