Seek .(US:SKLTY) 3 6 Ke·2026-01-13 00:42Core Insights - DeepSeek has released a new paper titled "Conditional Memory via Scalable Lookup: A New Axis of Sparsity for Large Language Models," in collaboration with Peking University, introducing a new module called Engram to enhance the efficiency of large language models [1][3]. Group 1: Research Overview - The current approach to sparsity in large language models primarily relies on Mixture of Experts (MoE) for conditional computation, but existing Transformer architectures lack a native knowledge retrieval mechanism [3][8]. - DeepSeek proposes conditional memory as a complementary dimension to MoE, introducing the Engram module to facilitate efficient knowledge retrieval with O(1) time complexity [8][9]. Group 2: Engram Module Implementation - The Engram module has been implemented and made available on GitHub, allowing for community engagement and further development [4][5]. - Engram separates static memory storage from dynamic computation processes within the Transformer architecture, enhancing overall model performance [10][12]. Group 3: Performance Metrics - Engram has shown significant improvements in various benchmarks, including a +3.4% increase in MMLU accuracy and a +4.0% increase in CMMLU accuracy, as well as notable gains in general reasoning tasks [9][28]. - The architecture allows for better long-context retrieval capabilities, with accuracy in Multi-Query NIAH increasing from 84.2 to 97.0 [9]. Group 4: Experimental Results - DeepSeek trained four models: Dense-4B (4.1 billion parameters), MoE-27B (26.7 billion), Engram-27B (26.7 billion), and Engram-40B (39.5 billion), all under the same training conditions [25][27]. - The sparse architectures (MoE-27B, Engram-27B/40B) outperformed the dense model (Dense-4B) across all benchmarks, demonstrating superior scalability [28][30]. Group 5: Memory and Computation Decoupling - Engram's deterministic retrieval mechanism allows for the decoupling of parameter storage from computational resources, enabling efficient scaling without increasing computational costs [15][17]. - The architecture supports a multi-level cache hierarchy, optimizing memory access and reducing latency [18]. Group 6: U-Shaped Scaling Law - DeepSeek identified a U-shaped scaling law for optimal allocation between MoE and Engram, suggesting that a balanced distribution of sparse parameters leads to improved performance [19][24]. - The optimal allocation ratio was found to be around 20%-25% of the sparse parameter budget for Engram, confirming the structural complementarity between the two modules [23][24].