Daily Issue
Vol. I — No. 81
24 · 09
Thursday, 24 September 2026
Generated 2026-09-24 09:36
google/gemini-2.5-flash-lite
The only thing we have to fear is fear itself. — Franklin D. Roosevelt 37 items · 3 sections
§ 0

The Morning

Local weather 1
This morning in
London
Mainly clear
Today's range
22.4°↓12.7°
currently 15.4°
Feels
13.9°
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0%
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8 km/h
Humid
64%
Rise
06:49
Set
18:54
§ I

From the arXiv

arXiv preprints 10 of 20
cs.AIarxiv:2609.28416v1Lead article

Agent-Editing World Model: Rethinking World Modeling for LLM Agents

Shuang Sun, Guoxin Chen, Fanzhe Meng, Jia Deng, Huatong Song

his paper introduces the Agent-Editing World Model (AEWM) to improve LLM agent performance on long-horizon tasks. Instead of predicting environment observations, AEWM models how reasoning and actions influence task progress. It achieves this by distinguishing between critical, exploratory, and noisy decisions and then revising noisy reasoning-action sequences, directly integrating these edits with real execution.

cs.AIarxiv:2609.28449v1

Can LLMs Reason About Runtime Behavior? A Repository-Level Dynamic Benchmark

Hamed Taherkhani, Mohammad Abdollahi et al.

This paper introduces SWE-Flux, a novel repository-level benchmark designed to evaluate LLMs' ability to reason about code execution. Its core method involves creating 480 execution-grounded questions across 12 real Python repositories, with answers automatica…

cs.LGarxiv:2609.28003v1

Learning from Failures: Heterogeneous Graph Memory for Small Language Model Tool-Using Agents

Jiaxing Li, Lei Song et al.

This paper introduces FRESH, a novel method for improving small language model agents' tool-using capabilities. FRESH constructs a heterogeneous graph memory from past successful and failed tool executions, explicitly capturing the causal dependencies and safe…

Flat trajectory memory can obscure action dependencies and failure causes. FRESH structures successful and failed experience as a heterogeneous graph, retrieves relevant evidence, and checks risky actions before execution.
Flat trajectory memory can obscure action dependencies and failure causes. FRESH structures successful and failed experience as a heterogeneous graph, retrieves relevant evidence, and checks risky act…
cs.AIarxiv:2609.28247v1

Controlling Collectives of AI Agents in Reasoning Space with Spatial Transformers

Frederic Vatnsdal, Roshan Gopal et al.

This paper introduces COMPASS, a decentralized architecture for controlling large groups of AI agents. It uses a spatial transformer on each agent to generate local feedback by aggregating multi-hop messages, enabling scalable and cohesive collective behavior.…

cs.AIarxiv:2609.28197v1

PASTABench: Proactive Assessment of Sequential Trajectories for Agent Safety

Jiapeng Sun, Yujin Zhou et al.

This paper introduces PASTABench, a benchmark for evaluating the safety of autonomous LLM agents performing multi-step tasks. Its core method, Decoupled Proactive Safety Monitoring, allows for timely intervention by assessing *whether*, *when*, and *how risky*…

Overview of the PASTABench framework. Motivated by the critical need for anticipatory risk intervention in agentic interactions, we introduce: Risk Trajectory : illustrating the temporal nature of proactive safety where latent signals (Risk Precursor Emerges) must be identified before escalating to irreversible harm (Hazard Materialized); Data Construction : employing a rigorous pipeline that synthesizes dynamic Actor-Environment interactions using DeepSeek-R1, followed by hierarchical annotation and dual-verification quality assurance; Contributions : establishing a benchmark for autonomous agents, featuring a multi-dimensional risk taxonomy and innovative metrics for evaluating optimal intervention windows.
Overview of the PASTABench framework. Motivated by the critical need for anticipatory risk intervention in agentic interactions, we introduce: Risk Trajectory : illustrating the temporal nature of pro…
№06
cs.AI
8

Shopping by algorithm: How agentic AI deploys human heuristics as a surrogate consumer

Davood Wadi, Yu Ma

This paper investigates how AI shopping agents, acting as surrogate consumers, are influenced by marketing pricing cues. The core method involves "Tool-Lab," which simulates costly…

№07
cs.AI
8

StudentBench: AI and human tutoring yield equivalent GRE learning gains

Curtis Northcutt, Inaara Hasmani et al.

This paper introduces **StudentBench**, a platform for evaluating AI tutors by collecting large-scale data on student-AI interactions. The core finding is that AI tutoring achieves…

№08
cs.LG
8

Fine-Tuning LLMs for Translation: General Forgetting Mitigation Does Not Preserve MT-Specific Instruction Following

Niklas Scholz, David Thulke et al.

This paper investigates whether general forgetting mitigation techniques for LLMs effectively preserve machine translation (MT) capabilities and MT-specific instruction following (…

№09
cs.CL
8

Exact Feedback Is Not Control: Evaluating Text-based Closed-Loop Revision in LLMs

Haitong Jiang, Chunlin Liu et al.

This paper introduces a novel protocol for evaluating LLM closed-loop revision by using deterministic verifiers to ensure feedback is always correct and complete. Their core contri…

№10
cs.AI
7

Beyond Poetry: Can Large Language Models Generate Classical Arabic Maqamat?

AbdulRahman A. Morsy, Aya Zirikly

This paper investigates whether Large Language Models (LLMs) can generate classical Arabic *maqamat*, a complex prose genre. The core method involves a controlled evaluation of fiv…

§ II

The Town Square

Hacker News 8
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