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PerLTQA: A Personal Long-Term Memory Dataset for Memory Classification, Retrieval, and Synthesis in Question Answering

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arxiv 2402.16288 v1 pith:JHMG7NOK submitted 2024-02-26 cs.CL cs.AIcs.IR

classification cs.CLcs.AIcs.IR
keywords memoryclassificationperltqadatasetllmslong-termmemoriestask
verification ladder T0 review T1 audit T2 compute T3 formal
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Long-term memory plays a critical role in personal interaction, considering long-term memory can better leverage world knowledge, historical information, and preferences in dialogues. Our research introduces PerLTQA, an innovative QA dataset that combines semantic and episodic memories, including world knowledge, profiles, social relationships, events, and dialogues. This dataset is collected to investigate the use of personalized memories, focusing on social interactions and events in the QA task. PerLTQA features two types of memory and a comprehensive benchmark of 8,593 questions for 30 characters, facilitating the exploration and application of personalized memories in Large Language Models (LLMs). Based on PerLTQA, we propose a novel framework for memory integration and generation, consisting of three main components: Memory Classification, Memory Retrieval, and Memory Synthesis. We evaluate this framework using five LLMs and three retrievers. Experimental results demonstrate that BERT-based classification models significantly outperform LLMs such as ChatGLM3 and ChatGPT in the memory classification task. Furthermore, our study highlights the importance of effective memory integration in the QA task.

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Cited by 7 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Setoka: A Benchmark for Hierarchical User Understanding in Personalized Agents over Heterogeneous Data

    cs.AI 2026-07 conditional novelty 8.0 of 10

    Setoka evaluates memory-augmented agents on four levels of user understanding—semantic memory, episodic memory, behavior patterns, and personality traits—over synthesized heterogeneous user data, and finds performance...

  2. LMEB: Long-horizon Memory Embedding Benchmark

    cs.CL 2026-03 unverdicted novelty 7.0 of 10

    LMEB is a new benchmark that evaluates embedding models on long-horizon memory retrieval and shows this skill is largely orthogonal to traditional passage-retrieval performance.

  3. MemSifter: Offloading LLM Memory Retrieval via Outcome-Driven Proxy Reasoning

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    MemSifter trains a 4B proxy with an outcome-driven, rank-sensitive RL reward to sift LLM memory, and on eight benchmarks it matches or beats embedding, graph, and long-context baselines.

  4. MemoCue: Empowering LLM-Based Agents for Human Memory Recall via Strategy-Guided Querying

    cs.AI 2025-07 conditional novelty 6.0 of 10

    MemoCue uses a 5W scenario classifier and Monte Carlo Tree Search to generate cue-rich questions that help LLM agents guide humans through memory recall.

  5. How Stylistic Similarity Shapes Preferences in Dialogue Dataset with User and Third Party Evaluations

    cs.CL 2025-07 conditional novelty 6.0 of 10

    A new open-domain dialogue dataset shows that users' own judgments of stylistic similarity correlate with their preference (Spearman r=0.67-0.75), but third-party stylistic similarity judgments do not, indicating a ga...

  6. MemBench: Towards More Comprehensive Evaluation on the Memory of LLM-based Agents

    cs.CL 2025-06 conditional novelty 5.0 of 10

    MemBench introduces a multi-scenario, multi-level memory benchmark for LLM agents, evaluating factual and reflective memory across participation and observation settings.

  7. Evolutionary Perspectives on the Evaluation of LLM-Based AI Agents: A Comprehensive Survey

    cs.CL 2025-06 conditional novelty 4.0 of 10

    A survey that classifies AI agent evaluation benchmarks along environment and capability axes, and proposes five traits that distinguish agents from chatbots.

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