Faisal Ahmed
Prescott, Arizona

Faisal Ahmed

Assistant Professor of Mathematics & Data Science

Embry-Riddle Aeronautical University — faculty profile ↗

I'm a Data Scientist with a strong foundation in mathematics, machine learning, computer vision, and NLP, building predictive models that turn complex data into decisions. I am building hybrid and interpretable models by combining TDA features with deep learning and transformer models, and my focus is healthcare — transforming complex medical imaging data into models that improve diagnosis and patient outcomes.

Portrait of Faisal Ahmed
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About

Data scientist, machine learning engineer, and researcher with 9+ years across academia and industry. I bring a unique blend of academic research and industry experience — from applied mathematics and topological data analysis to computer vision, NLP, generative AI, and large language models — turning complex data into models that drive real decisions. My primary focus has been healthcare, using deep learning to make medical imaging models both accurate and mathematically interpretable. Alongside research, I teach and mentor students through end-to-end machine learning projects, from problem formulation to deployment.

28Publications & talks
3Research grants (NSF ×2, Simons)
9+Years in teaching & research
Research Interests
AI for Healthcare Solutions and Applications Data Science Topological Data Analysis Machine Learning Deep Learning Medical Image Analysis Applied Mathematics
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Technical Skills

Programming & Tools

Languages: Python, R, SQL, MATLAB, Java, C++
Libraries: NumPy, Pandas, SciPy, Scikit-learn, Keras, PyTorch, TensorFlow
BI & Visualization: Matplotlib, Seaborn, Tableau, Power BI

Machine Learning

Supervised: Linear & Logistic Regression, Decision Trees, SVM, KNN, Naive Bayes, LDA/QDA, Random Forest, XGBoost, Gradient Descent & Stochastic Gradient Descent
Unsupervised: K-Means & Hierarchical Clustering, PCA
Model Practices: Cross-Validation, Bagging & Boosting, Regularization, ETL Pipelines

Deep Learning & NLP

Deep Learning: Neural Networks, MLP, CNN, RNN, LSTM, Vision Transformers, Transfer Learning
Generative AI & NLP: LLMs, GPT, Fine-Tuning LLMs, spaCy, NLTK, Gensim, Transformers, TextBlob, Hugging Face Datasets

Data Engineering & Cloud

Databases: SQL Server, PostgreSQL, MongoDB, NoSQL
Cloud & Big Data: AWS, Hadoop, Apache Spark, MLlib, Hive, Scala, Kafka, Impala
Web Scraping: BeautifulSoup, Scrapy

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End-to-End ML Workflow

From raw data to a deployed, production-ready model — the pipeline I follow on real-world projects.

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Data Collection

Pulling structured data via SQL and unstructured data via web scraping.

SQLBeautifulSoupScrapy
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Data Preprocessing

Cleaning, handling missing values, and manipulating raw data into an analysis-ready form.

PandasNumPy
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Feature Engineering

Selecting and transforming the most predictive features for the model.

Scikit-learnSciPy
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Model Training & Validation

Training and validating classical ML and deep learning models.

Scikit-learnPyTorchTensorFlow
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Model Deployment

Serving the trained model behind a REST API for real-world use.

FlaskAWS
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Experience

May 2025 — Present
Assistant Professor of Mathematics & Data Science
Embry-Riddle Aeronautical University, Prescott, AZ
Designing and teaching undergraduate courses in Calculus, Statistics, and Data Science; teaching applied ML/DL (regression through CNNs, RNNs, LSTMs); mentoring student ML projects end to end.
Aug 2024 — May 2025
Visiting Assistant Professor of Data Science
Embry-Riddle Aeronautical University, Prescott, AZ
Taught advanced coursework in Machine Learning, Statistics, Data Visualization, and Linear/Advanced Calculus; conducted ongoing ML research alongside teaching.
Feb 2024 — Aug 2024
Data Science Engineer / Assistant AI Trainer
BroadAxis, Inc., Plano, TX
Designed a trading app and dashboard for portfolio decision-making; built predictive models and NLP systems; worked on generative AI and LLM-based text applications.
Jan 2020 — Dec 2023
Researcher
Dept. of Mathematical Sciences, The University of Texas at Dallas
Proposed ToFi-ML and Topo-CNN — topological data analysis models for medical image classification (retinal, chest X-ray, breast cancer, histopathology). Published in IEEE, ICCV, and MIUA.
Aug 2018 — Dec 2023
Graduate Teaching Assistant
The University of Texas at Dallas
Instructed Differential Calculus, Integral Calculus, and Calculus of Several Variables; graded undergraduate and graduate coursework.
Jan 2016 — Jul 2018
Junior Data Scientist
Al Arafah Bank Limited, Dhaka, Bangladesh
Applied causal modeling, predictive modeling, regression, and time-series analysis to support business-improvement initiatives.
Jan 2014 — Dec 2015
Lecturer
Daffodil International University, Dhaka, Bangladesh
Taught Business Math, Calculus, Integral Calculus, and Linear Algebra.
Teaching Courses — Assistant Professor
Machine Learning Statistical Software Probability and Statistics Calculus-I Calculus-III Data Acquisition and Manipulation Introduction to Computers & Application Applied Calculus for Aviation
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Education

2018 — 2023
Ph.D. in Applied Mathematics
(Data Science Concentration)
The University of Texas at Dallas · CGPA 3.56/4.00
2020 — 2022
M.S. in Data Science
The University of Texas at Dallas · GPA 3.78/4.00
2012 — 2013
M.S. in Applied Mathematics
The University of Dhaka · GPA 3.80/4.00 · Top 10%
2007 — 2011
B.S. in Mathematics
The University of Dhaka · CGPA 3.62/4.00 · Top 7%
Dissertation: Topological Machine Learning in Medical Image Analysis ↗
Funded by the National Science Foundation (Grants #DMS-2202584, #DMS-2220613) and the Simons Foundation (Grant #579977).
Data Science Coursework — M.S. in Data Science
Machine Learning Statistical Machine Learning Big Data Management Algorithms and Data Structures Computer Science-I Statistical Data Structure Math Foundation of Data Science Optimization Numerical Linear Algebra Graph Theory
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Publications & Research

Peer-reviewed work in topological data analysis, deep learning, and medical image analysis, published in IEEE, ICCV, MIUA, and leading imaging-informatics journals.

Peer-reviewed journal papers 7
Brain Tumor Classification from MRI Using Colormap-Based Vision Transformers on the BRISC2025 Dataset
Journal of Imaging Informatics in Medicine · 2026
doi.org/10.1007/s10278-026-02221-6 ↗
Topological Signatures vs. Gradient Histograms: A Comparative Study for Medical Image Classification
Biomedical Signal Processing and Control, vol. 125, p. 110783 · 2026
doi.org/10.1016/j.bspc.2026.110783 ↗
RepViT-CXR: A Channel Replication Strategy for Vision Transformers in Chest X-ray Tuberculosis and Pneumonia Classification
Journal of Bronchology and Interventional Pulmonology (AABIP 2026) · 2025/2026
arXiv:2509.08234 ↗
HOG-CNN: Integrating Histogram of Oriented Gradients with Convolutional Neural Networks for Retinal Image Classification
Journal of Imaging Informatics in Medicine · 2026
doi.org/10.1007/s10278-026-01893-4 ↗
MRI-Based Alzheimer's Disease Severity Classification Across Four Stages Using Topological Descriptors, Feature Selection, and Ensemble Learning
International Journal of Computer and Systems Engineering, Vol. 20, No. 6 · 2026
publications.waset.org/10014565.pdf ↗
Topo-CNN: Retinal Image Analysis with Topological Deep Learning
with M. A. N. Bhuiyan, B. Coskunuzer · Journal of Imaging Informatics in Medicine · 2025
doi.org/10.1007/s10278-025-01575-7 ↗
OcuViT: A Vision Transformer-Based Approach for Automated Diabetic Retinopathy and AMD Classification
with M. J. Uddin · Journal of Imaging Informatics in Medicine · 2025
doi.org/10.1007/s10278-025-01676-3 ↗
Peer-reviewed conference papers 8
Efficient Breast and Ovarian Cancer Classification via ViT-Based Preprocessing and Transfer Learning
ACDSA'27(International Conference on Artificial Intelligence, Computer, Data Sciences, and Applications) · IEEE Conference Proceedings (accepted)
arXiv preprint pending
PseudoColorViT-CXR: Colormap-Enhanced Vision Transformers for Tuberculosis and Pneumonia Detection from Grayscale Chest X-ray Images
ACDSA 2026, Boracay Island, Philippines
doi.org/10.1109/ACDSA67686.2026.11467813 ↗
Hybrid Topological and Deep Feature Fusion for Accurate MRI-Based Alzheimer's Disease Severity Classification
ICECER'26 · IEEE Conference Proceedings (accepted)
arXiv preprint pending
Addressing High Class Imbalance in Multi-Class Diabetic Retinopathy Severity Grading with Augmentation and Transfer Learning
ICECCME 2026 · IEEE Conference Proceedings (accepted)
arXiv:2507.17121 ↗
Enhancing Sentiment Analysis with Feature Extraction and Dimensionality Reduction in Traditional Machine Learning Models
with E. Bossi · Intelligent Systems Conference, pp. 166–183, Springer · 2025
doi.org/10.1007/978-3-032-07109-5_12 ↗
Topo-CXR: Chest X-ray TB and Pneumonia Screening with Topological Machine Learning
with B. Nuwagira, F. Torlak, B. Coskunuzer · IEEE/CVF ICCV, pp. 2326–2336 · 2023
doi.org/10.1109/ICCVW60793.2023.00246 ↗
Histopathological Cancer Detection with Topological Signatures
with A. Yadav, O. Daescu, R. Gedik, B. Coskunuzer · IEEE BIBM, pp. 1610–1619 · 2023
doi.org/10.1109/BIBM58861.2023.10385822 ↗
ToFi-ML: Retinal Image Screening with Topological Machine Learning
with B. Coskunuzer · MIUA, pp. 281–297, Springer · 2023
doi.org/10.1007/978-3-031-48593-0_21 ↗
Under review 7
ABD-TDA: Attention-Based Deep and Topological Feature Fusion for Histopathological Cancer Classification
Submitted to journal · 2026
Bridging Topology and Deep Representation Learning: A TDA-ViT Fusion Model for Four-Class Brain Tumor Classification
Submitted to journal · 2026
Brain Tumor Classification from 3D MRI Using Persistent Homology and Betti Features: A Topological Data Analysis Approach on BraTS2020
Submitted to journal · 2026
Colormap-Enhanced Vision Transformers for MRI-Based Multiclass (4-Class) Alzheimer's Disease Classification
Submitted to journal · 2026
Transfer Learning with EfficientNet for Accurate Leukemia Cell Classification
Oral presentation, NxT AI Conference 2025
arXiv:2508.06535 ↗
HistoViT: Vision Transformer for Accurate and Scalable Histopathological Cancer Diagnosis
Review paper, SN Computer Science
arXiv:2508.11181 ↗
Alzheimer's 3D MRI Diseases Detection with Topological Machine Learning
with T. Akan, F. Gelir, M. A. N. Bhuiyan · Accepted, AMIA 2025 Clinical Informatics Conference
Talks & poster presentations 6
  • 2023Presented Retinal Image Screening with Topological Machine Learning at the Workshop on Imaging and Data Science, University of Texas at Dallas, Richardson, Texas, USA, on October 27, 2023.
  • 2023Showcased a machine learning model, Topo-CXR, focused on computer vision for automated medical diagnosis at the ICCV CVAMD 2023 workshop in Paris, France, on October 2, 2023.
  • 2022Exhibited a machine learning model, Topo-ML, at the Conference on Advances in Data Science – Theory, Methods, and Computation, Texas A&M University, Commerce, Texas, USA, from October 21–22, 2022.
  • 2025Presented the paper titled “Topo-CNN: Retinal Image Analysis with Topological Deep Learning” as a speaker at the NxT AI Conference, held in San Francisco, CA, USA, on November 4, 2025.
  • 2026Presented the paper titled “PseudoColorViT-CXR: Colormap-Enhanced Vision Transformers for Tuberculosis and Pneumonia Detection from Grayscale Chest X-ray Images” at the International Conference on Artificial Intelligence, Computer, Data Sciences and Applications (ACDSA 2026), IEEE.
  • 2026Presented the paper titled “RepViT-CXR: A Channel Replication Strategy for Vision Transformers in Chest X-ray Tuberculosis and Pneumonia Classification” at the AABIP 2026 Annual Conference in Denver, Colorado, USA.
  • 2026Presented my paper titled “Addressing High Class Imbalance in Multi-Class Diabetic Retinopathy Severity Grading with Augmentation and Transfer Learning” at the 6th International Conference on Electrical, Computer, Communications and Mechatronics Engineering (ICECCME 2026).
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Certifications

  • Data Science Certificate — The University of Texas at Dallas (2022)
  • Graduate Teaching Certificate — The University of Texas at Dallas