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The Myth of Expert Specialization in MoEs: Why Routing Reflects Geometry, Not Ne

BACKGROUND
1 SIGNALFIRST DETECTED 14 April 2026
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How the story developed
14 Apr
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Other feeds and industry voices
2 Apr
Self-Routing: Parameter-Free Expert Routing from Hidden States

arXiv:2604.00421v1 Announce Type: new Abstract: Mixture-of-Experts (MoE) layers increase model capacity by activating only a small subset of experts per token, and typically rely

REPORT · HOW · ArXiv CS.AIOPEN STORY
9 Sept
From Concentration to Differentiation and Back: Routing Effective Rank in MoE Reasoning Cohorts

arXiv:2609.06403v1 Announce Type: new Abstract: Test-time scaling produces cohorts of reasoning rollouts, yet there is no standard label-free account of how their internal

REPORT · HOW · ArXiv CS.AIOPEN STORY
10 Aug
Beyond Routing Weights: Faithful Response-Level Interpretation of Mixture-of-Experts Reward Models via Contribution Contrast

arXiv:2608.06400v1 Announce Type: new Abstract: Reward models are central to learning from human preferences, yet identifying what drives their predictions remains challenging.

REPORT · HOW · ArXiv CS.AIOPEN STORY
1 Apr
Route-Induced Density and Stability (RIDE): Controlled Intervention and Mechanism Analysis of Routing-Style Meta Prompts on LLM Internal States

arXiv:2603.29206v1 Announce Type: new Abstract: Routing is widely used to scale large language models, from Mixture-of-Experts gating to multi-model/tool selection. A common

REPORT · HOW · ArXiv CS.AIOPEN STORY
15 May
Shared expert pool reduces parameters while maintaining performance

<p>Conventional mixture‑of‑experts designs hand each transformer layer its own private expert set, causing the total expert parameter count to swell linearly with depth. Recent

REPORT · WHAT · Dev.toOPEN STORY
26 Mar
Geometric Mixture-of-Experts with Curvature-Guided Adaptive Routing for Graph Representation Learning

arXiv:2603.22317v1 Announce Type: cross Abstract: Graph-structured data typically exhibits complex topological heterogeneity, making it difficult to model accurately within a

REPORT · WHAT · ArXiv CS.AIOPEN STORY
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