A-MEM

“However, most existing agent-memory approaches still rely on unweighted or weakly weighted relations, where an edge primarily indicates the existence of a connection rather than its query-dependent utility.”

“Current frameworks operate as synchronous, ``append-and-evolve-all'' systems. Every user utterance---regardless of its information density---is forced through the entire memory construction and evolution pipeline. In production, this design inevitably leads to an $O(N^2)$ computational complexity for memory updates as the interaction history grows.”

“trigger updates based on arbitrary token counts or time-steps rather than semantic completeness, failing to prevent the corruption of stable knowledge by transient dialogue states.”

“However, they rely on implicit, unstructured associations rather than explicit schemas for modeling information evolution across sessions. This approach can lead to arbitrary links and inconsistent interpretations that are difficult to analyze.”

“However, prior work typically organizes memory around associative proximity (e.g., semantic similarity) rather than mechanistic dependency~kiciman2023causal. As a result, such methods can retrieve what occurred but struggle to reason about why, since they lack explicit representations of causal structure”