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Radar

Daily bookmarks: relevant news, facts and discoveries.

Engineering ·

KV cache quantization: keys and values

An ACL 2026 article reports that using 4 bits for keys and 2 for values may work well for KV cache compression; reversing those bit widths substantially degrades accuracy.

Engineering ·

LED explores intermediate layers to broaden sampling

Published on July 10, 2026, the report presents Latent Exploration Decoding (LED), a method requiring no additional training that uses intermediate-layer distributions to improve sampling in reasoning models.

Engineering ·

Proactive memory for long-horizon agents

A paper dated July 10, 2026 presents a separate memory agent that maintains structured information and decides when to offer reminders to an action agent.

Engineering ·

QuadRF tracks drones and detects Wi-Fi

Published on July 10, 2026, Jeff Geerling’s account presents QuadRF, a phased-array radio built with a Raspberry Pi 5 and an FPGA board. It uses signal processing and beamforming to track drones and detect Wi-Fi through walls.

Engineering ·

Hierarchical search agents: delegation and execution

An article published on July 9, 2026 examines how to distribute model capacity across delegation and execution roles in hierarchical search agents. The post identifies decomposition capacity as the main performance bottleneck.

Engineering ·

Two-core GPU implemented on a US$30 FPGA

Published on July 9, 2026, the project describes a two-core GPU on a US$30 FPGA, with a 16-bit ISA, assembler, J++ language, compiler, and AI inference at 81 MHz.

Engineering ·

Study compares costs and quality in agent orchestration

Published July 9, 2026, the study evaluates 22 tasks across six models, changing only the orchestration layer. It reports lower costs, token use, and runtime, with equivalent task-completion quality.

Engineering ·

Asynchronous RL rollouts for agentic training

Published on July 9, 2026, the article discusses asynchronous RL for language-model post-training, with updates as rollouts arrive. It cites clipping adjustments in GLM 5.2 PPO and also points to VAPO.

Engineering ·

Diffusion language models: techniques in focus

A Kuleshov Group post presents research on diffusion language models, covering masked diffusion, iterative refinement, post-training, and variable-length generation.

Engineering ·

NapMem proposes active navigation of memory

An article published on July 8, 2026 presents NapMem, a framework that organizes a user's history in a linked memory pyramid with multiple granularities.

Engineering ·

NapMem explores long-term memory for agents

Published on July 8, 2026, NapMem organizes user history into memory layers and trains an agent to choose which layer to inspect. The proposal contrasts with relying only on evidence preselected by a retriever.

Engineering ·

What theory reveals about MaxSim

Published on July 8, 2026, the article examines MaxSim’s representational power and reports that it can exactly reproduce inner products between nonnegative k-sparse vectors.

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