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Adapting A Vector-Symbolic Memory for Lisp ACT-R
Meera Ray, Christopher L. Dancy
https://arxiv.org/abs/2508.15630 https://arxiv.org/pdf/2508.15630

Adapting A Vector-Symbolic Memory for Lisp ACT-R
Holographic Declarative Memory (HDM) is a vector-symbolic alternative to ACT-R's Declarative Memory (DM) system that can bring advantages such as scalability and architecturally defined similarity between DM chunks. We adapted HDM to work with the most comprehensive and widely-used implementation of ACT-R (Lisp ACT-R) so extant ACT-R models designed with DM can be run with HDM without major changes. With this adaptation of HDM, we have developed vector-based versions of common ACT-R functions, …