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Ph.D. candidate at FIU working on information-theoretic privacy, explainable graph ML, and agentic AI systems — with a decade of industrial control-engineering background before the Ph.D.

General Information

Full Name Hojat Allah Salehi
Email hsalehi@fiu.edu
Website hojatsalehi.com
Location Miami, FL

Education

  • Aug 2023 – 2026
    Ph.D., Computer Science
    Florida International University
    • Reviewer: NeurIPS, ICML, ICLR, ITW, ISIT, T-IFS
    • Thesis: A Stochastic Approach to Privacy-Preserving Distributed Parameter Estimation
  • Sep 2010 – Sep 2012
    M.Sc., Control Engineering
    Sharif University of Technology
    • Thesis: A Fuzzy Probabilistic Belief Framework for Uncertainty Propagation in Dynamical System Reliability
  • Sep 2006 – Sep 2010
    B.Sc., Control Engineering
    Tabriz University
    • Thesis: Quantitative Application of Non-Cooperative Game Theory Models for Stock Market Prediction

Experience

  • Aug 2023 – present
    Graduate Research Assistant
    Florida International University
    • Maximally Negatively Correlated Quantizers in Distributed Learning (CorBin-FL)
      • Introduced correlated distributed quantization for federated learning, improving accuracy over prior methods.
      • Validated on CIFAR10, FEMNIST, Shakespeare, and Sent140 (CNN, ResNet18, LSTM, Transformer) on multiple A100s, achieving high communication efficiency by transmitting one bit per model weight.
    • Explanation-Preserving Augmentation for Semi-Supervised Graph Representation Learning
      • Developed a semantics-preserving graph augmentation technique leveraging GNN explainers, with theoretical analysis of its gains over prior methods.
      • Validated on MUTAG, Benzene, and PROTEINS, achieving up to 7.83% improvement in classification accuracy.
    • Discrete Denoising Diffusion Model (DiGress) and Application in Graph Explainability
      • Applied Discrete Denoising Diffusion (DiGress) to ProxyExplainer to improve GNN explainer accuracy.
      • Conditioned the diffusion model on explainer subgraphs to enable in-distribution graph generation, preserving explainable structure while reconstructing the rest.
    • Denoising Diffusion Implicit Model (DDIM) for Time Series Prediction
      • Developed a conditional DDIM with an attention-based UNet for time-series analysis and generation.
      • Encoded volume and price movements as multi-channel RGB conditioning to capture temporal dependencies.
    • Agentic-SysID: Autonomous Multi-Agent System Identification
      • Built a multi-agent pipeline (Intake, Modeler, Estimator, Validation) converting a natural-language plant description into a control-ready model with uncertainty bounds and a validity region, under a constrained budget.
      • Designed a physics-first fidelity ladder escalating from white-box to grey-box or black-box surrogate only on validation evidence, routed through a guarded, budget-enforced Plant API; demonstrated on a pendulum-with-friction plant that breaks the white-box model.
    • Multi-Agent Sports Game Analysis (LangGraph)
      • Built a LangGraph-orchestrated multi-agent pipeline for NBA/MLB game analysis with parallel adversarial debates (win-probability, total-points), each converged by a judge and cross-validated by a head analyst.
      • Closed the loop with a post-game accuracy review that writes semantically-retrieved lessons to a ChromaDB memory store per agent role, across a mixed OpenAI/Anthropic LLM routing layer with SQLite persistence.
  • Jun 2022 – Jul 2023
    Research and Development Manager
    Tunnel Sadd Ariana
    • AI-driven stock market prediction: web data extraction, feature selection, preprocessing (FFT, LOWESS), and LSTM-based stock-market prediction.
  • Sep 2019 – Jun 2022
    Senior Electrical Engineer
    Tunnel Sadd Ariana
    • Managed the implementation of industrial automation: PLC programming and SCADA design for irrigation-system water-flow control and monitoring.
    • Supervised electrical and industrial-automation section of two comprehensive World Bank projects.
  • Sep 2013 – Mar 2019
    Research Fellow
    K.N. Toosi University
    • Researched gradient-based optimization methods: applied a second-order gradient-based technique to solve optimal control problems in hybrid dynamical systems.
    • Developed advanced control strategies for bipedal and monopod robots: extended the hybrid minimum principle (HMP) to control a monopod robot for maximum jumping height.

Projects

  • May 2024 – Dec 2024
    eBay ML Challenge: NLP-Driven Auto Part Classification
    • NLP for information extraction: combined Named Entity Recognition and inference-based methods to pair vehicle components from free-text descriptions.
    • Data preprocessing: cleaned and filtered text, applied spaCy-based importance summarization, and built augmented, auto-labeled training sets.
    • Two-stage BERT fine-tuning: one model extracts initial labels directly; a second infers missing fields from context, improving accuracy and recall.
  • Jan 2023 – Sep 2023
    Detection of DDoS Attacks using SVM and Logistic Regression
    • Built an SVM/Logistic-Regression DDoS classifier on the CIC-DDoS2019 dataset (SMOTE-balanced) and on self-generated traffic captured via hping3/Wireshark.
    • Achieved high accuracy and low false-positive rates across both datasets, showing real-world applicability.
  • Mar 2019 – Sep 2019
    A Genetic Algorithm and Tabu Search Method for Supply Chain Problems
    • Developed a Genetic Algorithm and Tabu Search for capacity-constrained location-routing, overcoming exact-method computational limits for large-scale Mixed Integer Programming (MIP) in supply-chain problems; presented at the 2nd International Congress on Engineering Technology and Innovation.

Skills

  • Analytical & Technical
    • Machine Learning
    • Differential Privacy / Federated Learning
    • Graph Neural Networks
    • Graph Representation Learning
    • Explainable AI (XAI)
    • Diffusion Models (DDPM/DDIM)
    • Agentic AI / Multi-Agent Systems
    • LangGraph
    • Vector Databases (ChromaDB)
    • Natural Language Processing
    • Optimization
    • Time Series Analysis
    • Data Science
    • Industrial Automation
    • SCADA
  • Programming — Expert
    • Python
    • PyTorch
    • Scikit-learn
    • Keras
    • TensorFlow
    • Pandas
    • NumPy
  • Programming — Proficient
    • SQL
    • C/C++
    • Git
    • MySQL
    • PowerBI
    • TIA Portal
    • SIMULINK
    • Hping3