Memory System
Continuous memory — companionship that never forgets
Neurova agents have genuine persistent memory, not a context that is wiped after every conversation.
Memory tiers
| Tier | Description | Characteristics |
|---|---|---|
| Working memory | The current conversation context | Updated in real time, configurable capacity |
| Short-term memory | Recent events and conversations | Temperature decay, automatic discovery of hot memories |
| Long-term memory | Persisted experience and knowledge | Consolidated storage, version control, retrospective access |
| Emotional memory | Memories tagged with affect | Driven by the emotion engine, steering reasoning and decisions |
| Temporal knowledge graph | A graph of events and entities | Supports causal reasoning and associative retrieval |
The 17-dimension memory taxonomy
Where conventional agent frameworks only distinguish "short-term" from "long-term", Neurova partitions memory into 17 types: conversation, fact, profile, relationship, skill, experience, lesson, emotion, goal, plan, project, event, insight, pattern, preference, config and reflection.
NeRF-enhanced memory retrieval (six-channel volumetric fusion)
Neurova transfers the volumetric rendering theory of NeRF (Neural Radiance Fields) into memory retrieval, shifting the paradigm from discrete search to rendering a continuous semantic field.
The six channels
| Channel | Function | Default density |
|---|---|---|
| Temperature | Retrieval by memory heat | 0.7 |
| Text | Semantic similarity | 0.9 |
| Category | Memory type matching | 0.5 |
| Graph | Knowledge-graph association | 0.6 |
| Emotion | Emotional state matching | 0.8 |
| Voice | Voiceprint matching | 0.4 |
Fusion modes
- Legacy mode: weighted sum, score = Σ(w_i · c_i)
- NeRF mode: volumetric fusion, score = Σ(T_i · σ_i · c_i · w_i), with transmittance decaying across channels
The memory temperature mechanism
- Temperature engine: Ebbinghaus forgetting curve + Bayesian forgetting + consolidation
- Sleep processing: five sleep stages + an idle consolidation chain (idle_tracker) + dream generation
- Muscle memory: three promotion tiers — L1 exact keywords / L2 vector similarity / L3 tool memory
Sleep and resource management
Neurova simulates a human sleep-wake cycle: awake (Beta 13-30Hz) / light sleep (Alpha 8-13Hz) / deep deliberation (Theta 4-8Hz) / REM (Gamma 30+ Hz), with automatic sleep, manual control and scheduled wake-up.