Blog

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Modeling a 40% budget increase w/ GTFS

Allocating new service based on routes by headway and trip runtime

Notes from challenges during parsing of AWS access logs

Regex conditionals and non-capturing groups for the win

RAPTOR algorithm with caching

Notes on suggested optimizations

RAPTOR transit routing algorithm basics

A simple code-based demonstration of the fundamental concept behind RAPTOR

Map matching over-simplified

An attempt to break down map matching into a simple, albeit crude example

Faster tests with PySpark

Unit testing and data warehouse queries

Slicing polygons with linestrings

Adapting split strategies from Shapely to TurfJS

External DAG triggers in Airflow

Executing DAGs from within other DAGs and managing shared context