UniMem: complementary routing from episodic to parametric memory¶

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Fidelity: Runs the paper's isolatable state and update mechanisms on common public data or a deterministic mini-suite. This does not reproduce the original large model.

Paper information¶

Field	Details
Paper	UniMem: complementary routing from episodic to parametric memory (arXiv 2607.26017)
Organization	CASIA / UCAS / Peking University / University College London
First public release	2026-07-28
Authors' code	No official public repository was found as of 2026-07-29.
Adapter / method	`unimem`
Local reproduction code	`src/auto_research/agent_research/`

Original paper¶

Motivation and method¶

Novel tasks first enter an episodic buffer. A self-routing controller consolidates recurring and reliable execution patterns into scalable parametric memory.

flowchart LR
    X["Unbounded task stream"] --> R["Routing token"]
    R --> E["Episodic buffer"]
    R --> P["Parametric memory"]
    E --> C["Consolidate reliable patterns"]
    C --> P

Key figure from the paper¶

Figure 1: Overall workflow, stages, and data flow. From the original paper; copyright remains with the authors.

Core equations¶

\[ z_t=\operatorname{Route}_\theta(x_t),\quad M_p\leftarrow M_p\oplus\operatorname{Consolidate}(M_e)\ \text{if recurrence}\ge\tau. \]

Paper results¶

On long-horizon streaming tasks, execution fidelity is maintained and exact match improves by 4.0 points on average across three backbones. No production online A/B is reported; only offline or environment outcomes are included.

Local reproduction¶

The EvoMem mini-suite runs episodic routing, the recurrence threshold, parametric routing, and consolidation statistics.

Metric	UniMem
Joint success	1.0000
Average cost	0.5200
Episodic / parametric / consolidation	24 / 96 / 12

auto-research agent-eval --method unimem --episodes 120 --seed 42

See the fixed-seed metrics.

Reproduction boundaries¶

Parametric memory is a structured pattern table, not expanded LLM weight blocks. The run checks the stability/plasticity routing logic.