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Erick Hecht Lopez

Applied Data Science | Machine Learning | Data Engineering | Business Intelligence

Turning complex data into reliable insights, measurable questions, and better decisions across industries.

I build applied data science solutions for business, healthcare, operational processes, customer analytics, and industrial systems. My work connects data engineering, statistics, machine learning, analytical dashboards, and software quality to solve practical problems—from understanding customer behavior and predicting churn to evaluating healthcare workflows and spatial uncertainty.

I bring an interdisciplinary perspective from medical imaging, applied informatics, and postgraduate Data Science studies at Universidad de Santiago de Chile (USACH). Each project emphasizes reproducibility, appropriate validation, data leakage prevention, interpretability, and honest communication of uncertainty.

Explore the work, not just the tools: public projects include an interactive healthcare dashboard, a completed churn modelling case study, scientific reports, research prototypes, and curated BI showcase material. Demonstrations and synthetic benchmarks are clearly distinguished from production deployments and validated real-world outcomes.

Start here — Selected projects

Project Applied problem Public evidence
Healthcare RIS/PACS Analytics Operational intelligence for imaging workflows Interactive synthetic-data demo
TELCO Churn Analytics Predictive customer retention with temporal validation Completed reproducible case study
Neuro-MBA Analytics Consumer / Business Intelligence and product associations Four conceptual synthetic showcase visuals; interactive demo pending
Healthcare MLOps Benchmark Model evaluation, calibration, scientific reporting Development-only research report
MRI RAG HELPER Evidence-oriented educational information retrieval Research prototype; clinical review pending
GeoAI Mineral Labs Spatial validation, prospectivity and uncertainty Reproducible geospatial laboratories
Mining Geospatial Analytics Applied geospatial analytical workflows Executed technical notebooks

Core capabilities: Python · SQL · Polars · DuckDB · pandas · scikit-learn · Streamlit · MLOps/QA · GitHub Actions · Geospatial Analytics.

Portfolio Status — October 2026

The links above represent different maturity levels: published portfolio artifacts, interactive demos, research prototypes, and work in progress. Synthetic data, conceptual images, and research metrics are not presented as evidence of live production performance.

Executed Notebooks — Results Gallery

Explore saved scientific results without installing Python. View results opens a read-only notebook renderer, while GitHub notebook opens the source and saved outputs in the repository. These links show previously saved outputs, not live computation.

GeoAI Mineral Labs

GeoAI laboratory Rendered results Source and outputs
LAB01A — Coordinate foundations View results GitHub notebook
LAB01B — Cross-zone CRS analysis View results GitHub notebook
LAB02 — Spatial exploratory analysis View results GitHub notebook
LAB03 — Spatial cross-validation View results GitHub notebook
LAB04 — Geochemical CoDA View results GitHub notebook
LAB05 — Mineral prospectivity View results GitHub notebook
LAB06 — Explainable GeoAI View results GitHub notebook

Important: These are previously saved outputs, not live execution sessions. The experiments use synthetic data and have documented validation boundaries. LAB04 links to the explicitly executed notebook; its separate source-only notebook has no saved outputs. To reproduce a workflow, consult the repository's environment, data, and execution instructions.

If the external notebook viewer is unavailable, try the corresponding GitHub notebook link.

Mining Geospatial Analytics

These notebooks in the separate mining-analytics repository also contain saved execution results.

Mining laboratory Rendered results Source and outputs
LAB01A — Coordinate foundations View results GitHub notebook
LAB01B — Cross-zone CRS analysis View results GitHub notebook
LAB02 — Spatial exploratory analysis View results GitHub notebook
LAB03 — Spatial cross-validation View results GitHub notebook
LAB04 — Geochemical CoDA View results GitHub notebook

TELCO Churn Analytics

All three TELCO notebooks now have saved, publicly inspectable outputs. The EDA satisfaction-score chart includes a horizontal x-axis-label presentation fix.

TELCO notebook Rendered results Source and outputs
01 — Data quality and EDA View results GitHub notebook
02 — Modeling View results GitHub notebook
03 — Interpretation View results GitHub notebook

Healthcare MLOps — WDBC Scientific Report

WDBC uses a different publication contract from the 15 executed notebooks above: the research notebook is intentionally source-only, and its eight frozen evidence inputs are not distributed. The saved scientific results are available as a read-only, publicly hosted HTML report, not as an executable notebook or clinical application.

WDBC resource Public access Purpose
Evidence-first landing Open landing Study scope, two verified figure previews and methodological cautions
Frozen visual report View scientific report Five original figures, scientific tables, methods and limits
Research notebook Read source on GitHub Methodology and audited read-only reporting logic, without saved execution outputs

Research boundary: development-only WDBC benchmark and probability calibration; not independent clinical validation, a diagnostic system or medical-device software.

Featured Portfolio

GeoAI & Mining Analytics

GeoAI Mineral Labs

Explore GeoAI Mineral Labs

A reproducible laboratory portfolio applying geospatial data science, spatial validation, compositional data analysis, machine learning, and GeoAI methods to mineral exploration problems.

Current public milestone: v0.2.0

Laboratory status

Completed

  • LABORATORY 00 - Engineering & GeoAI Environment
  • LABORATORY 02 - Spatial Exploratory Data Analysis
  • LABORATORY 03 - Spatial Cross-Validation
  • LABORATORY 04 - Geochemical Compositional Data Analysis
  • LABORATORY 05 - Mineral Prospectivity Mapping
  • LABORATORY 06 - Explainable GeoAI

In progress

  • LABORATORY 01 - Geospatial Python Foundations
    • LABORATORY 01A - Coordinate Foundations: completed and validated
    • LABORATORY 01B - Cross-Zone CRS Analysis: completed and validated

Planned

  • LABORATORY 07 - Uncertainty Quantification
  • LABORATORY 08 - Remote Sensing
  • LABORATORY 09 - Deep Learning for GeoAI
  • LABORATORY 10 - Graph & Multimodal GeoAI

The v0.2.0 project checkpoint includes 163 passing automated tests, signed milestone commits, a signed release tag, pre-commit quality controls, and full-history secret scanning with Gitleaks.

LABORATORY 05 demonstrates a leakage-aware mineral prospectivity workflow using spatial cross-validation, pooled out-of-fold evaluation, out-of-sample ranking, and a sealed hidden-oracle evaluation.

Under the frozen synthetic experiment, the selected prospectivity model achieved useful hidden-deposit enrichment while prioritizing substantially less than the complete candidate area.

Healthcare Analytics

Healthcare RIS/PACS Analytics Demo

Launch Live App View Source View Releases

A reproducible public healthcare analytics portfolio project using synthetic radiology workflow data to demonstrate RIS/PACS operational analytics, reporting latency, workflow analysis, data quality, management-oriented visualization, and cross-platform software quality controls.

The live dashboard is deployed on Streamlit Community Cloud and contains synthetic data only.

Healthcare MLOps - WDBC Scientific Benchmark

Explore Healthcare MLOps Benchmark

Published development-only research notebook on Wisconsin Diagnostic Breast Cancer (fine-needle aspirate features, not mammography): nested cross-validation, out-of-fold evaluation, and probability calibration. Includes a static visual report. The frozen research inputs are not included in this minimal public release; results are not externally validated and are not intended for clinical decisions.

Open live report landing | View scientific HTML report | Research notebook (source only)

Additional Portfolio Projects

TELCO Churn Analytics — Completed

Explore completed TELCO Churn Analytics

Public synthetic-data case study of leakage-aware churn modelling, temporal validation, probability calibration, model comparison, and automated quality controls. The final portfolio integration was completed on 19 October 2026. Model performance describes the synthetic benchmark only and is not evidence of production performance.

TELCO validation precision-recall curves

The three TELCO portfolio notebooks are published on main with executed outputs (12 saved outputs including 3 PNG figures across the notebooks). The figure above remains a separately version-controlled validation plot. The notebook outputs describe the frozen synthetic benchmark only, not production telecom performance.

Neuro-MBA Analytics — Public Visual Showcase Published

Explore Neuro-MBA Analytics — Consumer / Business Intelligence

Applied data science research project covering executive commercial analytics, product associations (Market Basket Analysis), temporal exploration, and cross-selling hypotheses for Chile · Calendar 2025. The repository now includes four curated conceptual visuals, a public-scope README, and confidentiality disclosures. All figures are illustrative and synthetic; they are not verified screenshots of a deployed application or empirical results.

Status: public GitHub portfolio published (commit c527c2a); interactive Streamlit demonstration remains under separate review and is not deployed here. Proprietary simulation code, experimental tables, and decision logic are not distributed.

MRI RAG HELPER — Public Research Prototype

Explore MRI RAG HELPER

Spanish-language educational retrieval lab for MRI concepts, with a local SQLite FTS5 baseline, optional hybrid search and local generation, source-provenance controls, and automated QA. Status: public prototype/research code; its own README reports pending clinical peer review, so it is not a clinical tool or validated medical advice system.

Technical Stack

Data Science

Python | R | pandas | Polars | NumPy | scikit-learn | Jupyter

Geospatial Analytics

GeoPandas | Shapely | PyProj | Rasterio

Engineering & Quality

Git | GitHub | Conda | pytest | pre-commit | GitHub Actions | Gitleaks

Data & Analytics Engineering

SQL | DuckDB | data pipelines | analytical validation | reproducible workflows

Areas of Applied Work

Mining & Geospatial Analytics

Spatial analysis, geospatial data engineering, spatial machine learning, compositional geochemistry, mineral prospectivity, and reproducible GeoAI workflows.

Healthcare Analytics

Applied analytics for medical imaging, operational performance, RIS/PACS systems, and healthcare information workflows, informed by professional experience in MRI and medical imaging.

Data Science & Applied AI

Statistical modelling, machine learning, reproducible experimentation, analytical pipelines, and interpretable model development across applied domains.

Working Principles

I focus on analytical work that is reproducible, auditable, and scientifically defensible.

This includes:

  • validating assumptions before increasing model complexity;
  • preventing data leakage, including spatial leakage;
  • separating exploratory analysis from reusable analytical components;
  • comparing advanced methods against interpretable baselines;
  • using automated testing and explicit quality gates where appropriate;
  • maintaining traceable version control and signed milestones;
  • validating important changes through pull requests;
  • communicating uncertainty, limitations, and methodological assumptions explicitly.

Current Development

Current development includes spatial uncertainty research, MRI educational retrieval, and a separately reviewed Neuro-MBA interactive demonstration. Public release status is tracked in each project repository.

Additional public projects in machine learning and applied data science will be added progressively after methodological, security, and publication review.

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