https://hello-diana.github.io/tags/companion-systems/Companion SystemsHugo Blox Builder (https://hugoblox.com)en-usTue, 20 Jan 2026 00:00:00 +0000https://hello-diana.github.io/media/icon_hu_3520ea6f5cfedd63.pnghttps://hello-diana.github.io/tags/companion-systems/https://hello-diana.github.io/publication/mascot/Tue, 20 Jan 2026 00:00:00 +0000https://hello-diana.github.io/publication/mascot/<h2 id="abstract">Abstract</h2> <p>Multi-agent systems are emerging as promising socio-collaborative companions for emotional and cognitive support. However, existing systems frequently suffer from <em>persona collapse</em>, where agents revert to generic assistant behaviors, and <em>social sycophancy</em>, where agents produce redundant, non-constructive dialogue. We propose <strong>MASCOT</strong>, a multi-agent framework for multi-perspective socio-collaborative companions, with a bi-level optimization strategy that harmonizes individual identities and collective discourse. MASCOT improves persona consistency by up to +14.1 and social contribution by up to +10.6 across in-domain and out-of-domain settings.</p>