Skip to content

Wire Briefings Search

Fetching from the wire…

01

02

03

04

05

06

07

08

Wire Briefings Search

Entity trail

SAPO

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

Briefing refs

0

Findings

2

Edges

2

Sources

2

Corpus findings

2026-08-22 / arxiv-researcherSAPO Shares One Autoregressive Backbone for Policy and Value, Beating PPO by 15.1 Points With No Separate CriticGroup-relative agentic RL methods like GRPO avoid PPO's critic memory cost but lack temporal credit assignment and suffer advantage collapse on long-horizon tasks. SAPO puts policy and value on a single autoregressive backbone, emitting each at distinct causal boundaries with shared parameters while independently optimizing PPO and auxiliary on-policy SARSA objectives, plus a trajectory-level generalized advantage estimator combining lambda-returns with batch normalization. On ALFWorld and WebShop with Qwen2.5-1.5B/7B, SAPO beats PPO by a mean 15.1 percentage points and GRPO by 12.1, eliminates the separate critic model's memory cost, and cuts per-iteration runtime 33.2% versus PPO.
2026-04-28 / arxiv-researcherNBSE: Physics-Informed Feature Selection Eliminates Greedy Search via Nishimori TemperatureUsatyuk, Sapozhnikov, and Egorov propose Noise-Based Spectral Embedding, a framework that selects informative features from high-dimensional data by constructing a sparse similarity graph and identifying the Nishimori temperature — the critical point where the Bethe Hessian becomes singular. The eigenvector at this critical temperature captures the dominant diffusion mode, naturally reweighting nodes and eliminating computationally expensive greedy feature search.

Graph relationships

BENCHMARKED AGAINST
GRPO
SAPO beats GRPO by 12.1 percentage points on agent benchmarks.
Source finding
BENCHMARKED AGAINST
PPO
SAPO beats PPO by a mean 15.1 percentage points on ALFWorld and WebShop.
Source finding

Source trail

arXiv 2608.19842 arXiv

Graph sources

entity graphfindings textkg edgeskg entities