Sarder Junaid Ahmed

>_ ML Researcher · Data Scientist · PhD Applicant

Sarder Junaid
Ahmed

Building statistically rigorous frameworks at the intersection of machine learning, causal inference, and computational social science.

6+Projects
4Publications
93%Best Model Accuracy
IELTS 7.0English Proficiency
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Who I Am

I'm a Machine Learning Researcher and Data Scientist based in Dhaka, Bangladesh, with a B.Sc. in Computer Science & Engineering from RUET (Thesis Grade: A+). My work focuses on developing statistically valid frameworks — not just accurate models, but ones with rigorous assumption validation, uncertainty quantification, and fairness auditing.

I'm currently a Researcher at Royal Scientific Publications and applying for PhD programs in Computational Science. I've won the Best Research Paper Award at APMEE 2025 and have two more papers accepted for presentation at IEEE SPECTRA 2026.

Beyond research, I'm a published poet, former radio jockey, lyricist, and composer — which informs the clarity and narrative depth I bring to communicating complex ideas.

📍 Dhaka, Bangladesh 🎓 B.Sc. CSE, RUET 🏆 Best Paper Award 2025 🌐 IELTS 7.0
Focus Areas
  • Causal Inference
  • Statistical Validity in ML
  • Computational Social Science
  • Governance Analytics
  • NLP & Transformer Fine-tuning
  • RAG Systems
Currently

Researcher @ Royal Scientific Publications
Applying for PhD programs in Computational Science

Technical Arsenal

⚙️

Languages & Tools

PythonC/C++SQL GitDockerLinuxLaTeX
📊

Statistical Methods

Bayesian InferenceCausal Inference Hypothesis TestingFDR Correction BootstrapMeasure-Theoretic Probability
🤖

Machine Learning

XGBoostRandom ForestScikit-learn SHAPFeature Engineering Cross-validationSMOTE
🧠

Deep Learning & NLP

PyTorchTensorFlowHuggingFace DistilBERTPhi-3-mini TF-IDFRAGChromaDB
📈

Data & Visualization

PandasNumPyMatplotlib SeabornPlotlyStreamlitGradio
🔬

Mathematical Methods

Numerical AnalysisLinear Algebra Differential EquationsOptimization Theory PCAVIF Analysis

Featured Work

Research Project

FAI

Feature-Wise Adaptive Imputation

ML framework that automatically selects the optimal imputation method per feature by learning a selector that maps feature statistical properties to the best strategy. Consistently within 1% of the best baseline — zero manual tuning.

Scikit-learnMICEKNNmissForest
Within 1% of best baseline MCAR / MAR / MNAR
Research Project

Crime Classification

Fairness-Aware ML for Dhaka Metropolitan Area

6-class crime prediction on 3,000 incidents using spatiotemporal cross-validation, SMOTE-NC, SHAP feature selection, Platt scaling calibration (ECE=0.0432), and FairLearn fairness auditing.

XGBoostSHAPFairLearnSMOTE-NC
93.17% accuracy AUC 0.9945 ECE 0.0432
Research Project

Environmental Livability

Bootstrap-Validated SHAP Framework for 169 Nations

End-to-end pipeline: PCA → K-Means clustering → XGBoost classifier with novel Bootstrap SHAP uncertainty quantification (200 iter). Only 6–8 of 20 features are truly statistically significant. Validated against EPI 2020 (r=0.76–0.82).

XGBoostSHAPBootstrap CIK-Means
Test F1: 0.88 AUC: 0.94 35+ figures
NLP Project

IMDb Sentiment Analysis

DistilBERT Fine-tuning + Classical ML Comparison

Two-part NLP project: fine-tuned DistilBERT on 10K reviews (87.05% accuracy), and a classical ML pipeline on 50K reviews with Logistic Regression achieving 89.76% accuracy. Production-ready .pkl artifacts included.

DistilBERTHuggingFaceTF-IDFPyTorch
87.05% (Transformer) 89.76% (LR)

Publications

🏆 Best Paper Award · Presented

Multi-Dimensional Statistical Similarity for Governance Classification: Beyond Arbitrary Thresholds in Comparative Politics

6th Annual Paper Meet Electrical Engineering Division (APMEE 2025) · Oral Presentation

Ahmed, S.J. (2025)

✅ Accepted · Forthcoming Presentation

RMA-BO: Regret-Minimizing Adaptive Bayesian Optimization

Symposium on Photonics, Emerging Computational Technologies, Research & AI-Data Science (SPECTRA 2026) · IEEE Photonics Society HSTU SBC · Track: AI & Data Science

Ahmed, S.J., Islam Nahian, M.T., & Kwoshik, M.H.R. (2026)

✅ Accepted · Forthcoming Presentation

CF-EGAT: A Causal Fairness-Aware Equity Graph Attention Network for Country-Level Environmental Livability Classification

Symposium on Photonics, Emerging Computational Technologies, Research & AI-Data Science (SPECTRA 2026) · IEEE Photonics Society HSTU SBC · Track: AI & Data Science

Ahmed, S.J., Islam Nahian, M.T., & Kwoshik, M.H.R. (2026)

🔄 Under Review

Machine Learning for Crime Classification: A Fairness-Aware Approach to Class Imbalance

Manuscript Under Review · First Author

Ahmed, S.J., Islam Nahian, M.T., & Kwoshik, M.H.R. (2025)

🔄 Under Review

Environmental Livability Assessment via Adaptive Bootstrap-Retrained SHAP and Statistically-Constrained Pareto Counterfactuals: A Cross-National Analysis

Manuscript Under Review · First Author

Ahmed, S.J., Islam Nahian, M.T., Kwoshik, M.H.R., & Nakib, F.N. (2025)

Download My CV

Two versions available — one tailored for academic/PhD applications, one for industry data science and analytics roles.

Let's Connect

Open to PhD opportunities, research collaborations, and data science roles. Feel free to reach out.

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