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Hung Pham Van

Publications and source records attributed to Hung Pham Van.

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MemORAI: Memory Organization and Retrieval via Adaptive Graph Intelligence for LLM Conversational Agents

Large Language Models (LLMs) lack persistent memory for long-term personalized conversations. Existing graph-based memory systems suffer from information dilution, absent provenance tracking, and uniform retrieval that ignores query context. We introduce MemORAI (Memory Organization and Retrieval via Adaptive Graph Intelligence), a framework that integrates three innovations: selective memory filtering with dual-layer compression to retain user-persona-relevant content, a provenance-enriched multi-relational graph tracking factual origins at the turn level, and query-adaptive subgraph retrieval with Dynamic Weighted PageRank that applies query-conditioned edge weighting. Evaluated on LOCOMO and LongMemEval benchmarks, MemORAI achieves state-of-the-art performance in memory retrieval and personalized response generation, demonstrating that selective storage, enriched representation, and adaptive retrieval are essential for coherent, personalized LLM agents.

cs.CL

New Study Results the Secondary Settlement for Vertical Total Stress on Highway Construction built on Soft Ground in the Mekong Delta

Today, to calculate secondary settlement for vertical total stress by the analytic formula, we often use the formula of Raymond and Wahls (1976) This formula does not reflect that the secondary settlement for vertical total stress depends on the magnitude of the vertical total stress which impact sinkage in soft soil, and changes with depth and preconsolidation pressure. As a result, soft soil creep, resulted from the soft soil's vertical total stress, under road and highway at different depths will be different. The problems were solved in this article.

physics.geo-ph