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Self-alignment: how much safety to teach a language model without making it useless

Tue, 22 Sep 2026 12:15:00 +0200

First instalment of Cluster X-ray, the series that goes line by line through what really runs on the ANTS group’s cluster . We start with the first of three lines on language model safety.

The question #

Fine-tuning a language model so that it refuses harmful requests has a cost: if it is taught too thoroughly to say no, it starts refusing harmless things too, and loses usefulness. The line studies that balance: what proportion of safety data has to be mixed with the utility data, and whether the model itself can generate its own refusal examples and regulate the dose on its own.

What really runs on our cluster, read from the scripts themselves

Tue, 22 Sep 2026 10:00:00 +0200

A cluster’s job history is usually a wall of six-digit identifiers and cryptic names —mcpfw_cc, eval_dynamic_pid, boltz2— that say everything to whoever launched them and nothing to anyone else. But if you keep the scripts, the wall turns into a document: people write down why they do things, especially when a batch costs money and a night of waiting.

Welcome to the Gaia Lab blog

Fri, 18 Sep 2026 00:00:00 +0200

With this post we open the Gaia Lab blog. Before publishing deployment notes, results and guides, it is worth putting in writing who we are, what we do and what anyone following these pages can expect.

What Gaia Lab is #

Gaia Lab is the 5G and B5G technology experimentation laboratory of the ANTS group, part of the Department of Information and Communications Engineering at the University of Murcia. Our motto, “Driving connectivity”, sums up the intent: to design, deploy and measure communication networks on real infrastructure, not just in simulation.

How to publish a post on this blog

Thu, 17 Sep 2026 10:00:00 +0200

This blog is a static site generated with Hugo and deployed by GitLab’s continuous integration. Each post is a Markdown file inside its own folder, and publishing means merging that file into the main branch. At Gaia Lab we have gathered the complete steps here so that any member of the team can write and publish without depending on anyone else.

The experimental vehicle: a 5G lab on wheels

Tue, 15 Sep 2026 10:00:00 +0200

At Gaia Lab, the 5G and B5G technology experimentation laboratory of the ANTS group at the University of Murcia, we have put into service a multidisciplinary experimental vehicle for several research lines: 5G and B5G networks, vehicular communications, perception, IoT and edge computing.

Why a lab on wheels #

Many applications that depend on connectivity can only be evaluated on the move and on real terrain: high-resolution video, digital twins at the edge, cooperative communications or georeferenced multi-sensor data. We needed a mobile edge for the Espinardo Campus’s private 5G network, equipped with sensors, radios and computing.

What it connects to: the 5G and B5G experimentation infrastructure of the Espinardo Campus

Thu, 10 Sep 2026 10:00:00 +0200

When we present the experimental vehicle we usually dwell on what it carries on board. In this post we turn the question around and explain what it connects to: the vehicle is the mobile edge of the 5G and B5G experimentation infrastructure that we at Gaia Lab, within the ANTS group at the University of Murcia, have deployed on the Espinardo Campus. We describe its five building blocks and how the vehicle closes the loop.

About

Mon, 01 Jan 0001 00:00:00 +0000

What Gaia Lab is #

Gaia Lab is the 5G and B5G technology experimentation laboratory of the ANTS group at the University of Murcia. Our motto, Driving connectivity, sums up what we do: deploying, measuring and putting next-generation networks to the test on real infrastructure, and carrying that connectivity all the way to the edge, whether that is a sensor, a roadside unit or a moving vehicle.