Daniel Haskell

saved per 1,000 loans, vs. a naive 50% cutoff

Calibrated XGBoost tuned on an asymmetric cost matrix, with SHAP explainability and a live FastAPI service.

• XGBoost
• MLflow
• FastAPI

holdout MAPE forecasting next-day SPY volume

ETS shipped; XGBoost wins short-horizon validation, then drifts on the holdout. Demo, not a deployed service.

• ETS
• Prophet
• XGBoost
• FastAPI

retrieval hit rate — 23/23 faithfulness and answer relevance

Answers questions about a company's SEC filings and cites the exact paragraph each fact came from.

• RAG
• Chroma
• Claude API

agreement between VADER and DistilBERT across 51,643 real comments

Runs two sentiment-reading methods over real Reddit comments and shows exactly where they disagree.

• VADER
• DistilBERT
• transformers.js

opening sentiment vs. 5-day return, across 42 real filings

Tests whether upbeat language in an earnings release predicts the stock going up afterward. It doesn't, if anything it's mildly contrarian.

• NLP sentiment
• React
• Recharts

real job postings scored against a resume, in-browser

Scores how well a resume matches a job description, the same way an applicant tracking system does.

• Sentence embeddings
• transformers.js
• Cosine similarity

parsed sets, PR prediction, and a readiness score

Paste a workout and get a training calendar built from it, entirely client-side.

• React
• Local storage
• JavaScript

validated against 60 real SEC-filed contracts

Reads a contract and flags the clauses that are missing, one-sided, or expensive if things go wrong.

• Rule engine
• Regex NLP
• React

real inspection records mapped, Camden County

Maps every public health inspection by location, so you can see which restaurants nearby actually passed.

• Leaflet
• Geospatial
• JavaScript

NJ counties compared, flood risk vs. home price

A bivariate choropleth testing whether the housing market actually prices in flood risk.

• Bivariate choropleth
• GeoJSON
• D3-style SVG

captured from natural conversation, no forms

A chatbot that qualifies leads by actually talking with them, so only real prospects reach a human.

• Conversational UX
• Typebot
• Next.js