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Ceviche98/README.md

Oscar Gabriel Moreno Veliz

Senior Data Scientist & AI / NLP Researcher

MSc Artificial Intelligence (Distinction) — Queen Mary University of London

LinkedIn Portfolio Google Scholar Email

Typing SVG


👨‍💻 About Me

I am a Senior Data Scientist and AI/NLP Researcher based in London, UK, combining 5+ years of enterprise machine learning experience in Tier-1 banking with top-tier academic AI research.

  • 🎓 Graduated with Distinction in MSc Artificial Intelligence (NLP Stream) at Queen Mary University of London (QMUL) and First Class Honours in Electronic Engineering at PUCP (Ranked 4th in graduating class).
  • 💼 Former Lead / Advanced Data Scientist at BCP (largest bank in Peru) and BBVA, where I led experimentation platforms driving $1M+ incremental profit, engineered fraud susceptibility models (65% detection rate), and built cash remittance forecasting algorithms saving £110k+ annually.
  • 🔬 Published NLP Researcher with papers at NAACL (SYGTIP) and AmericasNLP, winner of 1st Place in the AmericasNLP 2021 Shared Task on machine translation for Quechua, and author of the Awajun-OP open-access parallel dataset with Ojo Público.
  • 🎯 Deep expertise in Parameter-Efficient Fine-Tuning (LoRA, PiSSA, DoRA), Continual Learning (CaLoRA), Multi-Tier Information Retrieval (MRL, Stella, FAISS), and Vision-Language / Multimodal Reasoning (LongCLIP, LLaVA).

🛠️ Technical Stack & Tooling

🧠 Deep Learning, LLMs & NLP

Python PyTorch Hugging Face Transformers PEFT / LoRA LangChain Whisper NLTK

🔍 Neural Search & Information Retrieval

FAISS MRL Embeddings SentenceTransformers Streamlit Scikit-Learn LightGBM

⚡ Big Data, Cloud & MLOps

PySpark Databricks SQL GCP MLflow Docker GitHub Actions

📊 Experimentation & Classical Planning

A/B Testing Hypothesis Testing


🌟 Featured Research & Flagship Repositories

Repository Domain Core Tech & Architecture Highlight Benchmark / Accolade
🏛️ PEFT-CL_Spanish_Peruvian_NMT MSc AI Thesis Meta NLLB-200-1.3B, LoRA, PiSSA, FFT, CaLoRA continual learning MSc AI Thesis (Distinction) across 5 Peruvian low-resource languages
🔍 scifact-tiered-neural-search Neural Search & IR Stella-1.5B, Qwen2.5-3B HyDE, GOLFer, MRL 256D, FAISS, Streamlit nDCG@10: 0.8063, Recall@10: 93.0% (Best Proposal & Top 2 System)
📊 hybrid-tweet-sentiment-analysis NLP & ML Ensembles Multi-Lexicon (VADER, AFINN, Hu & Liu), SentenceTransformers, LightGBM Score: 97/100 (Cohort Rank #1), 91.04% CV F1
👁️ longclip-llava-multimodal-vqa Multimodal Vision-Language LongCLIP-ViT-B/32 (248 tokens), LLaVA, Qwen-0.6B, PiSSA PEFT 67.62% Test VQA Accuracy (Rank #18 Cohort)
🚗 risk-sensitive-autonomous-driving-rl Deep RL & Safety QR-DQN, Distributional RL, CVaR Safety Shield, Highway-Env Crash Rate: 13.8% (5.2x safer than DQN)
🧩 visual-semantic-embeddings-and-planning Neuro-Symbolic AI Word2Vec Skip-Gram, PyTorch CIFAR-100 Projection, PDDL Planning mAP@K: 0.8079, 18/18 Plans Solved (Top 5% Cohort)

📚 Selected Peer-Reviewed Publications

  1. Findings of the AmericasNLP 2025 Shared Tasks on Machine Translation, Creation of Educational Material, and Translation Metrics for Indigenous Languages of the Americas.
    The Fifth Workshop on NLP for Indigenous Languages of the Americas (May 2025). Paper
  2. Awajun-OP: Multi-domain dataset for Spanish–Awajun Machine Translation.
    Workshop on NLP for Indigenous Languages of the Americas (March 2024). Dataset Repo
  3. Exploring Linguistic Typology Features in Multilingual Machine Translation.
    SYGTIP Workshop at NAACL 2021. Paper
  4. The REPU CS’ Spanish–Quechua submission to the AmericasNLP 2021 Shared Task on Open Machine Translation.
    Proceedings of the First Workshop on NLP for Indigenous Languages of the Americas (June 2021). 🏆 1st Place Winner for Quechua (Track 2). Paper

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  1. PEFT-CL_Spanish_Peruvian_NMT PEFT-CL_Spanish_Peruvian_NMT Public

    MSc AI thesis @ QMUL | Parameter-Efficient Fine-Tuning and Continual Learning for Spanish-to-Peruvian Indigenous Language Neural Machine Translation

    Python

  2. scifact-tiered-neural-search scifact-tiered-neural-search Public

    Two-Tier Neural Search & Claim Verification on BEIR SciFact (Fast 256D MRL vs. Pro 1536D Stella + Qwen HyDE + GOLFer Lexical Grounding)

    Python

  3. risk-sensitive-autonomous-driving-rl risk-sensitive-autonomous-driving-rl Public

    Risk-Sensitive Distributional Reinforcement Learning (QR-DQN vs. DQN) for Autonomous Driving in High-Density Highway, POMDP, Adversarial Cut-In, and Multi-Agent Platoon Environments

    Python 1

  4. llm-restaurant-dialogue-agent llm-restaurant-dialogue-agent Public

    Task-Oriented LLM Restaurant Dialogue Agent with 6-Phase Finite-State Tool Calling, Dense RAG Retrieval, and LoRA Fine-Tuning

    Python

  5. iapucp/Awajun-OP iapucp/Awajun-OP Public

    Multi-domain Dataset for Spanish–Awajun Machine Translation

    JavaScript 1

  6. REPUcs-AmericasNLP2021 REPUcs-AmericasNLP2021 Public

    JavaScript 1