Sajad Abavisani

Sajad Abavisani

Final-year PhD Candidate in Electrical & Computer Engineering

With seven years of experience in machine learning, causal inference, and time series analysis, I am actively seeking full-time positions starting in May 2026.

Specializing in causal learning, deep learning, and advanced time series analysis.

Ph.D. in Electrical and Computer Engineering

Aug 2020 – May 2026

Georgia Institute of Technology

GPA: 3.8/4.0

Select coursework: Mathematical Foundations of ML, ML with Limited Supervision, Conversational AI, Convex Optimization, Statistical ML, Information Theory, Random Processes

M.S. in Electrical and Computer Engineering

Aug 2020 – Aug 2023

Georgia Institute of Technology

GPA: 3.9/4.0

B.S. in Electrical Engineering

Sep 2014 – Sep 2019

Ferdowsi University of Mashhad

GPA: 4.0/4.0

Research & Publications

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  • GRACE-C: Generalized Rate Agnostic Causal Estimation via Constraints – ICLR 2023 (Oral Presentation, Top 25%)
  • Causal Learning through Deliberate Undersampling – Proceedings of the Second Conference on Causal Learning and Reasoning (2023)
  • Reducing Causal Illusions through Deliberate Undersampling – NeurIPS 2022 Workshop (2022)
  • Greedy AutoAugment – Pattern Recognition Letters Journal (Elsevier, 2020)
  • Radiologist-Level COVID-19 Detection Using CT scans – (2020)
  • Causal Graph Recovery in Neuroimaging through Answer Set Programming – Preprint
  • ION-C: Integration of Overlapping Networks via Constraints – Preprint

Featured Research

GRACE-C Research

GRACE-C: Generalized Rate Agnostic Causal Estimation

A breakthrough method for causal discovery in undersampled time series data, achieving up to 3 orders of magnitude speed improvement. Presented at ICLR 2023 (Oral, Top 25%).

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Causal Learning Research

Causal Learning through Deliberate Undersampling

Groundbreaking work showing that measuring data less frequently can actually provide more information about causality by reducing ambiguity in causal relationships.

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COVID-19 Detection

Radiologist-Level COVID-19 Detection

Novel DECAPS architecture using detail-oriented capsule networks for automated COVID-19 diagnosis from CT scans, achieving radiologist-level accuracy.

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Technical Projects

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AutoAugment Project

Greedy AutoAugment

Efficient image data augmentation using greedy search strategy, achieving comparable accuracy on CIFAR-10, CIFAR-100, and SVHN while using 360x fewer computational resources.

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ION-C Project

ION-C: Integration of Overlapping Networks

Computationally efficient algorithm that builds unified causal models from separate, partially overlapping datasets, scaling to graphs with up to 25 nodes with 99.55% accuracy.

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Causal Puzzle Project

Piecing Together the Causal Puzzle

Answer Set Programming approach to recover true causal structure from undersampled, noisy neuroimaging time series data with robust fMRI performance.

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Skills & Expertise

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Languages

Python, C++, JavaScript, R, Java, SQL, Clingo/ASP

ML & Deep Learning

PyTorch (CUDA), TensorFlow, Hugging Face (Transformers, PEFT, Datasets), LLM fine-tuning, RAG pipelines (LangChain, LlamaIndex), Graph Neural Networks (PyTorch Geometric), Transformers, GANs, Diffusion Models, Capsule Networks, Scikit-learn

Data & Infrastructure

Pandas, NumPy, SciPy, NetworkX, Statsmodels, Docker, AWS, Azure ML, W&B, MLflow, Git, GitHub Actions CI/CD, Linux, SLURM clusters

Specializations

Causal inference, constraint programming (ASP/Clingo), graph algorithms, time series analysis & forecasting, statistical modeling, Bayesian inference, optimization, open-source development (PyPI), agentic coding (Claude Code, Cursor)