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논문 기본 정보

저자정보
(서울대학교) (서울대학교)
저널정보
대한산업공학회 대한산업공학회지 대한산업공학회지 제52권 제2호
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    초록·키워드

    Long-term dialogue systems often suffer from degraded memory quality as accumulated session summaries introduce redundancy, noise, and hallucinated content. Prior work has mainly focused on improving summarization quality, leaving the usefulness of individual summary items largely unexplored. This paper presents a memory management framework that predicts the usefulness of each summary item using pseudo labels generated through an LLM-as-a-Judge procedure and prunes low-value content before it enters the memory. The proposed model follows a two-stage training strategy: it first learns a usefulness prediction module on top of a frozen encoder, then applies LoRA-based adaptation to refine encoder representations for task-specific discrimination. Experiments show that the model more accurately captures the relative importance of summary bullets, and dialogues conditioned on pruned memory exhibit more coherent and contextually appropriate responses. These findings highlight that managing the quality of stored memory, rather than expanding its volume, is crucial for improving long-term dialogue performance.

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      UCI(KEPA) : I410-151-26-02-096548466