Danny Hoang

Headshot of Danny Hoang

I am currently a graduate researcher in the Intelligent Systems and Control Laboratory under Dr. Farhad Imani at the University of Connecticut. My research is in knowledge representation systems for advanced manufacturing systems incorporating knowledge graphs, multimodal large language models, and artificial intelligence.

Research

Peer-reviewed work and other publications.

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Physics-grounded multi-agent architecture for traceable, risk-aware human–AI decision support in manufacturing

Journal of Manufacturing Systems, 2026
We present multi-agent knowledge analysis (MAKA), a decision-support architecture that separates intent routing, tools-only quantitative analysis, knowledge graph retrieval, and critic-based verification that enforces physical plausibility, safety bounds, and provenance completeness before recommendations are surfaced for human approval. In a three-level tool-orchestration benchmark spanning single-step to three-or-more-step stateful sequences, MAKA increased the pass rate for correct tool selection, argument assignment, and dependency-consistent execution by a mean, median, and maximum of 22.9, 8.0, and 64.0 percentage points, respectively, across 15 model-level comparisons over the stronger of the ReAct-style and structured function-calling baselines with identical model and tool access.

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Decision-Centric Virtual Metrology for Geometric Deviation via Foundation-Embedding Retrieval

Ground Vehicle Systems Engineering and Technology Symposium, 2026
This paper introduces ChronosGD, a retrieval-based virtual metrology framework. ChronosGD predicts pointwise geometric deviation from multichannel time series data by: (1) retrieving the most similar historical process windows in a frozen Chronos-2 embedding space, and (2) transferring deviation information through similarity-weighted aggregation. ChronosGD avoids plant-specific gradient retraining during deployment; adaptation is achieved by refreshing a labeled historical memory as new inspected parts become available, while preserving traceability through explicit neighbor provenance.

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Operationalizing Foundation Agents in Manufacturing via Persistent Workflow Memory

International Symposium on Flexible Automation, 2026
We introduce persistent tool memory (PTM), a validation-gated, retrieval-augmented memory that capturessuccessful tool-use episodes as reusable workflow priors. PTM significantly improves tool-use recall and first-pass planning accuracy, with the largest gains occurring in deeper workflows where baseline agents systematically derail. Moreover, PTM reduces model-size dependence; a 7B-parameter model equipped with PTM approaches the performance of 30B+ models by grounding planning decisions in previously validated execution traces.

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Knowledge Graph Fusion with Large Language Models for Accurate, Explainable Manufacturing Process Planning

International Journal of Production Economics, 2026
Augmented Retrieval Knowledge Network Enhanced Search & Synthesis (ARKNESS) is introduced as an end-to-end CNC process planning framework, achieving verifiable, numerically exact answers by combining zero-shot Knowledge Graph construction with retrieval-augmented generation. Furthermore, ARKNESS improves multiple-choice accuracy by up to +16.6 percentage points, F1-score by +16.5 percentage points, and ROUGE-L by 8.9Γ—, enabling smaller on-prem models to match or surpass larger cloud models for privacy-preserving, real-time shop-floor inference.

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Hyperdimensional Computing for Sustainable Manufacturing: An Initial Assessment

Manufacturing Letters, 2026
HyperDimensional Computing (HDC) is introduced as an alternative, achieving accuracy comparable to conventional models while drastically reducing energy consumption, 200Γ— for training and 175 to 1000Γ— for inference. Furthermore, HDC reduces training times by 200Γ— and inference times by 300 to 600Γ—, showcasing its potential for energy-efficient smart manufacturing.

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Hyperdimensional Computing for Explainable Information Fusion and Multi-Task Adaptation in Advanced Manufacturing

Information Fusion, 2025
This paper introduces MultiHd, a graph-based hyperdimensional computing framework that intrinsically integrates explainability, multi-task learning, and computational efficiency to overcome these limitations. By encoding multi-channel time series data into a structured graph, MultiHD captures interdependencies among signals using hyperdimensional representations, enabling computationally efficient parallel processing and rapid inference.

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Enabling Grounded Answers through Knowledge Graphs and Retrieval Augmented Generation

Ground Vehicle Systems Engineering and Technology Symposium, 2025
This paper presents GraphLLM, integrating knowledge graphs with LLMs to extract relations, curb hallucinations, and improve technical answers, achieving 25% gains on LLaMA, supporting precise decisions in advanced manufacturing.

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Hierarchical Representation and Interpretable Learning for Accelerated Quality Monitoring in Machining Process

CIRP Journal of Manufacturing Science and Technology, 2024
This research introduces a novel graph-based hyper-dimensional computing framework that not only assesses work-piece quality on-edge in 5-axis CNC machining, but also characterizes the key signals vital for evaluating quality from in-situ multichannel data.

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Multi-Task Brain-Inspired Learning for Interlinking Machining Dynamics With Parts Geometrical Deviations

International Manufacturing Science and Engineering Conference, 2024
We introduce MTaskHD, a novel multi-task framework, that leverages hyperdimensional computing (HDC) to effortlessly fuse data from various channels and process signals while characterizing quality within a multi-task manufacturing operation.

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Edge Cognitive Data Fusion: From In-Situ Sensing to Quality Characterization in Hybrid Manufacturing Process

International Manufacturing Science and Engineering Conference, 2023
This paper introduces hyperdimensional computing (HDC) to fuse load, current, torque, command speed, control differential, power, and contour deviation which provides robust, sample-efficient, and explainable learning of quality characterization.

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Data Fusion Cognitive Computing for Characterization of Mechanical Property in Friction Stir Welding Process

International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, 2023
This research introduces hyperdimensional cognitive computing (HCC) that mimics human brain functionalities to fuse power, torque, and force data to provide robust, sample-efficient, and explainable learning for process-property characterization in friction stir welding.

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Contact

Reach me at my university email: danny.hoang@uconn.edu

Reach me at my personal email: d.hoang3213@gmail.com