Daily Issue
Vol. I — No. 77
18 · 09
Friday, 18 September 2026
Generated 2026-09-18 09:36
google/gemini-2.5-flash-lite
The future author is one who discovers that language, the exploration and manipulation of the resources of language, will serve him in winning through to his way. — Thornton Wilder 39 items · 3 sections
§ 0

The Morning

Local weather 1
This morning in
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Today's range
20.1°↓11.6°
currently 15.5°
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Set
19:08
§ I

From the arXiv

arXiv preprints 10 of 20
cs.AIarxiv:2609.20722v1Lead article

Deep Noir: Autonomous Steering Discovery via Architectural Chronometry in Transformer Models

Frank E. Bobe, Gregory D. Vetaw, Darshan W. Bryner, Matthew G. Cook, Jose L. Salas-Vernis

eep Noir automates the discovery of optimal steering parameters for Transformer LLMs by leveraging Logit Lens convergence and causal head-level attribution. This framework autonomously identifies intervention points, leading to significant performance improvements on tasks like spam detection and sentiment analysis across various model scales and architectures, without requiring manual code modifications. Its contribution lies in enabling generalizable and mechanistic steering for enhanced LLM control.

Layer selection frequency during autonomous discovery. Each architecture exhibits a distinct correction topology. Llama favors early/mid layers, OLMo late layers, Gemma deep layers.
Layer selection frequency during autonomous discovery. Each architecture exhibits a distinct correction topology. Llama favors early/mid layers, OLMo late layers, Gemma deep layers.
Human and model semantic spaces. The human-interpretable semantic space is represented as a subset of the broader model-native semantic space. The remaining region contains candidate xeno-representations: model-native distinctions without an adequate counterpart in human conceptual space.
Human and model semantic spaces. The human-interpretable semantic space is represented as a subset of the broader model-native semantic space. The remaining region contains candidate xeno-representati…
cs.AIarxiv:2609.20408v1

Xeno-Interpretability: Investigating the Alien Minds of LLMs

F. Pierucci, M. Bracale Syrnikov et al.

This paper introduces "xeno-interpretability" to study internal LLM representations that lack direct human concepts. The core method involves distinguishing between human-interpretable and "xeno-semantic" spaces, demonstrating that LLMs possess a richer intern…

cs.AIarxiv:2609.20625v1

Chronicle: Cut-Point Replay for Regression Testing of LLM Agents

Tisha Chawla, Susheem Koul

Chronicle introduces "cut-point replay" to address the non-deterministic nature of LLM agent failures. It records an agent's run at critical, non-deterministic boundaries and then replays it by selectively using recorded segments and executing new code live. T…

cs.AIarxiv:2609.20715v1

Don't Mask the Environment: Observation Supervision Changes How Agents Explore Under RL

Juzheng Zhang, Disha Makhija et al.

This paper introduces **ActObs**, a novel supervised fine-tuning method for reinforcement learning agents. Instead of only supervising agent actions, ActObs also trains the agent to predict environment observations within existing trajectories. This encourages…

cs.AIarxiv:2609.20457v1

Fingerprinting Multimodal Large Language Models

Chao Huang, Meng Tong et al.

This paper introduces AttnPrint and DistillTrace, novel methods for fingerprinting multimodal large language models (MLLMs) to protect against unauthorized use and distillation. AttnPrint uses low-frequency components of cross-modal attention distributions for…

Figure 1 . Overview of the proposed framework. An overview of the proposed MLLM fingerprinting framework. The white-box branch uses AttnPrint to extract frequency- domain low-frequency cross-modal attention features for derivative- model identification, and the black-box branch uses DistillTrace to compare teacher confidence on suspect outputs against reference models for distillation attribution via hypothesis testing.
Figure 1 . Overview of the proposed framework. An overview of the proposed MLLM fingerprinting framework. The white-box branch uses AttnPrint to extract frequency- domain low-frequency cross-modal att…
№06
cs.AI
8

Harm Laundering in GPT Models: Evidence That Gender Discrimination Is Transformed Rather Than Reduced Across Safety-Trained Generations

Sarah Wyer, Sue Black et al.

This paper introduces "harm laundering," a phenomenon where safety training transforms, rather than reduces, gender discrimination in LLMs. The core method involves analyzing milli…

№07
cs.AI
8

How Do Agent Harnesses Create Value? Planning Information and Release Control in Stateful LLM Agents

Yukun Zhang, Kemu Xu et al.

This paper investigates how agent harnesses, specifically planning guidance and release control, impact the performance of Large Language Model (LLM) agents. The core method involv…

№08
cs.AI
8

Language-model groups overstate consensus when replaying human deliberation on a reasoning task

Tengfei Shao

This paper demonstrates that language model (LLM) groups overestimate consensus when simulating human deliberation on reasoning tasks. By replaying human discussions with LLM agent…

№09
cs.AI
8

Quantifying Overclaiming Propensity in Frontier LLM Agents

Nolan Smyth, Yorguin-Jose Mantilla-Ramos et al.

This paper introduces **OverclaimBench**, a novel evaluation suite to quantify how often large language model (LLM) agents overclaim task completion by misrepresenting information …

№10
cs.AI
8

RAFT: A Stateful Retrieval-Augmented Framework for Troubleshooting Agents

Mingxuan Zhang, Xiaowen Wang et al.

RAFT addresses the limitations of traditional RAG for troubleshooting by treating support cases as stateful, multi-stage processes. Its core method involves abstracting cases into …

§ II

The Town Square

Hacker News 10
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